Chronological list of all publications

  1. Peer reviewed Journal Publications

 

Prof Roelof Burger

Luckson Muyemeki, L, Burger, R.P., Piketh, S.J., Language, B., Beukes, J.P. and P.G. van Zyl, 2021: Source apportionment of ambient PM10−2.5 and PM2.5 for the Vaal Triangle, South Africa, South African Journal of Science, 117

(5/6), https://doi.org/10.17159/sajs.2021/8617

 

NC Nkosi, RP Burger, NR Matandirotya, C Pauw, SJ Piketh, 2021. Solid fuel use in electrified low-income residential areas in South Africa: The case of KwaDela, Mpumalanga. Journal of Energy in Southern Africa 32 (1), 58-67,        

http://dx.doi.org/10.17159/2413-3051/2021/v32i1a8086

 

M Weston, M Temimi, R Burger, S Piketh, 2021. A Fog Climatology at Abu Dhabi International Airport Journal of Applied Meteorology and Climatology 60 (2), 223-236, http://dx.doi.org/10.17159/2413-3051/2021/v32i1a8086

 

Moletsane, SD, Adesina, JA, Lindeque, FA, Language, B, Nkosi, NC, Burger, RP, Mkhatswa, G and SJ Piketh, 2021. Intra-urban variability of PM 2.5 in a dense, low-income settlement on the South African Highveld, Clean Air Journal

31 (1), 1-9, https://doi.org/10.17159/caj/2020/31/1.9413

 

Maseko, B, Feig, G and RP Burger, 2021: Characterizing lightning NOx production over South Africa. South African Journal of Science

 

Kok, L, van Zyl, PG, Beukes, JP, Swarts, J, Burger, RP, Ellis, S, Josipovic, M, Vakkari, V, Laakso, L and M Kulmala, 2021: Chemical composition of rain at a regional background site in the South African Highveld. Water SA.

 

Muyemeki, L. and Burger, R.P. and Piketh, S.J., 2020. Evaluating the potential of remote sensing imagery in mapping ground-level fine particulate matter (PM2.5) for the Vaal Triangle Priority Area}, Clean Air Journal, 30 (1),      

doi:10.17159/caj/2020/30/1.8066

 

Adesina, J.A., Piketh, S.J., Qhekwana, M., Burger, R., Language, B. and Mkhatshwa, G., 2020. Contrasting indoor and ambient particulate matter concentrations and thermal comfort in coal and non-coal burning households at South

Africa Highveld. Science of the Total Environment 2020, 699: 134403, https://doi.org/10.1016/j.scitotenv.2019.134403

Prof Stuart Piketh

Adesina, J.A., Piketh, S.J., Qhekwana, M., Burger, R.,.Language, B., Mkhatshwa, G., 2020. Quantifying the effect of air quality offsets on household air pollution and thermal comfort on the South Africa Highveld. Clean Air

Journal, 2020, 30(1), pp. 1–1, https://doi.org/10.17159/caj/2020/30/1.8282

 

Matandirotya, N.R., Cilliers, D.P., Burger, R.P., Language, B., Pauw, C., and Piketh, S.J., 2019: The potential for domestic thermal insulation retrofits on the South African Highveld. Clean Air Journal. Volume 29, No1, 1-8.       

https://doi.org/10.17159/2410-972X/2019/v29n1a1

 

Chidhindi, P., Belelie, M.D., Burger, R.P., Mkhatshwa, G., and Piketh, S.J., 2019: Assessing the impact of Eskom power plant emissions on ambient air quality over KwaZamokuhle. Clean Air Journal. Volume 29, No 1.                   

https://doi.org/10.17159/2410-972X/2019/v29n1a2

 

Belelie, M.D., Piketh, S.J., Burger, R.P., Venter, A.D., Naidoo, M., 2019. Characterisation of ambient Total Gaseous Mercury concentrations over the South African Highveld. Atmospheric Pollution Research, 10 (2019). DOI

10.1016/j.apr.2018.06.001,  https://doi.org/10.1016/j.apr.2018.06.001, p 12-23.

 

Formenti, P,Piketh, S.J. Namwoonde, A., Klopper D. Burger, R.P.,  Cazaunau, M., Feron, A., Gaimoz, C., Broccardo, S., Walton, N., Desboeufs, K, Da Silva, A., Siour, G., Hanghome, M., Mafwila, S., Omoregie, E., Junkermann, W., and

W. Maenhaut, 2019: Three years of measurements of light-absorbing aerosols over coastal Namibia: seasonality, origin, and transport, Atmos. Chem. Phys., 18, 17003–17016, 2018 https://doi.org/10.5194/acp-18-17003-2018

 

Kollonige, D.E., Thompson, A.M., Josipovic, M., Tzortziou, M., Beukes, J.P., Burger, R.P., Martins, D.K., van Zyl, P.G., Vakkari, V. and L. Laakso, 2018. OMI Satellite and Ground-Based Pandora Observations and Their Application

to Surface NO2 Estimations at Terrestrial and Marine Sites, Journal of Geophysical Research: Atmospheres, DOI: 10.1002/2017JD026518. First published: 29 January 2018

 

Nkosi, N.C., Piketh, S.J., and Burger, R.P., 2018. Fine PM emission factors from residential burning of solid fuels using traditional cast-iron coal stoves. Clean Air Journal, http://dx.doi.org/10.17159/2410-972X/2017/v27n2a7

 

Muyemeki, L., Burger, R., Piketh, S.J., Evans, S.W., 2017. Bird species richness and densities in relation to sulphur dioxide gradients and environmental variables. Ostrich 1–7.

 

Pretorius, I., Piketh, S. & Burger, R. 2017: Emissions management and health exposure: Are all power stations equal?, Air Qual Atmos Health (2017) 10: 509. https://doi.org/10.1007/s11869-016-0444-x, Air Quality, Atmosphere &

Health, May 2017, Volume 10, Issue 4, pp 509–520

 

Language, B., Piketh, S.J., Burger, R.P., 2016. Correcting respirable photometric particulate measurements using a gravimetic sampling method. Clean Air Journal, 26, 10–14.

 

Language, B., Piketh, S. J., Wernecke, B. and Burger, R. P., 2016: ‘Household Air Pollution in South African Low-Income Settlements: A Case Study’, WIT Transactions on Ecology and the Environment, 207, pp. 227-236. (ISBN:

978-1-78466-129-8).

 

Morwal, S.B., Narkhedkar, S.G., Padmakumari, B., Maheshkumar, R.S., Kothawale, D.R., Dani, K.K., Burger, R.P., Bruintjes, R.T., Kulkarni, J.R., 2016. Cloud characteristics over the rain-shadow region of North Central peninsular

India during monsoon withdrawal and post-withdrawal periods. Clim. Dyn. 46, 495–514.

 

Resmi, E., Malap, N., Kulkarni, J.R., Murugavel, P., Nair, S., Burger, R.P., Prabha, T. V, 2016. Diurnal cycle of convection during the CAIPEEX 2011 experiment. Theor. Appl. Climatol. 126, 351–367.

 

Elias, T., Piketh, S.J., Burger, R.P., Silva, A.M., 2003. Exploring the potential of combining column-integrated atmospheric polarization with airborne in situ size distribution measurements for the retrieval of an aerosol model:

A case study of a biomass burning plume during SAFARI 2000. J. Geophys. Res. 108, 16–44.

 

Hersey, S.P., Garland, R.M., Crosbie, E., Shingler, T., Sorooshian, A., Armin, S., Piketh, S.J., Burger, R.P., 2015. An overview of regional and local characteristics of aerosols in South Africa using satellite, ground, and

modeling data. Atmos. Chem. Phys. 15, 24701–24752.

 

Krauss, T.W., Sin’kevich, A.A., Burger, R.P., Veremei, N.E., Dovgalyuk, Y.A., Stepanenko, V.D., 2011. Investigation of the impact of dynamic factors on Cb cloud development in Saudi Arabia. Russ. Meteorol. Hydrol. 36, 643–652.

 

Kucera, P.A., Axisa, D., Burger, R.P., Collins, D.R., Li, R., Chapman, M., Posada, R., Krauss, T.W., Ghulam, A.S., 2010. Features of the weather modification assessment project in the southwest region of Saudi Arabia. J. Weather

Modif. 42, 78–103.

 

Language, B., Piketh, S.J., Burger, R.P., 2016. Correcting respirable photometric particulate measurements using a gravimetic sampling method. Clean Air J. 26, 10–14.

 

Liebenberg, D., van Hamburg, H., Piketh, S.J., Burger, R.P., 2015. Comparing the effect of modeled climatic variables on the distribution of African horse sickness in South Africa and Namibia. J. Vector Ecol. 40, 3.6.

 

Pretorius, I., Piketh, S.J., Burger, R.P., 2015a. The impact of the South African energy crisis on emissions. Air Pollut. XXIII 198, 255–264.

 

Pretorius, I., Piketh, S.J., Burger, R.P., Neomagus, H.W.J.P., 2015b. A perspective of South African coal fired power station emissions. J. Energy South. Africa 26, 27–40.

 

Reid, J.S., Piketh, S.J., Walker, A.L., Burger, R.P., Ross, K.E., Westphal, D.L., Bruintjes, R.T., Holben, B.N., Hsu, C., Jensen, T.L., Kahn, R.A., Kuciauskas, A.P., Al Mandoos, A., Al Mangoosh, A., Miller, S.D., Porter, J.N.,

Reid, E.A., Tsay, S.C., 2008. An overview of UAE2 flight operations: Observations of summertime atmospheric thermodynamic and aerosol profiles of the southern Arabian Gulf. J. Geophys. Res. 113, D14213.

 

Ross, K.E., Piketh, S.J., Bruintjes, R.T., Burger, R.P., Swap, R.J., Annegarn, H.J., 2003. Spatial and seasonal variations in CCN distribution and the aerosol-CCN relationship over southern Africa. J. Geophys. Res. 108.

 

Terblanche, D.E., Mittermaier, M.P., Burger, R.P., de Waal, K.J., Ncipha, X.G., 2005. The South African rainfall enhancement programme: 1997 - 2001. Water SA 31, 291–298.

 

Piketh, S.J., Annegarn, H.J. and Kneen, M.A., 1995, Composition of suspended

particles in the eastern Transvaal, Clean Air Journal, 9, 3, 12-18.

 

 Piketh, S.J., Annegarn, H.J. and Kneen, M.A., 1996: Regional scale impacts of

biomass burning emissions over southern Africa, in J.S. Levine (ed.), Biomass

Burning and Global Change, Chapter 30, MIT Press.

 

Annegarn, H.J., Flanz, M., Kenntner, T., Kneen, M.A., Helas, G., and Piketh, S.J.,

1996: Airborne streaker sampling for PIXE analysis, Nuclear Instruments and

Methods in Physics Research, B, 109/110, 548-550.

 

 Freiman, M.T., D’Abreton, P. and Piketh, S.J., 1998: Regional airflow over the

southern Drakensberg mountain of South Africa, South African Journal of Science,

94, 561-566.

 

Piketh, S.J., Annegarn, H.J. and Tyson P.D., 1999: Lower-tropospheric loadings

over South Africa: the relative contributions of aeolian dust, industrial emissions

and biomass burning, Journal Geophysical Research, 104, 1597-1607.

 

Piketh, S.J., Formenti, P., Annegarn, H.J. and Tyson, P.D., 1999b: Industrial aerosol

characterisation at a remote site in South Africa, Nuclear Instruments and Methods

in Physics Research B, 150, 350-355.

 

Formenti, P., Annegarn, H.J. and Piketh, S.J., 1998: Time-resolved aerosol

monitoring in the urban centre of Soweto, Nuclear Instruments and Methods in

Physics Research B, 136-138, 948-954.

 

Piketh, S.J., Swap, R.J., Anderson, C.A., Freiman, M.T., Zunckel, M. and Held, G.,

1999: The Ben Macdhui High Altitude Trace Gas and Aerosol Transport

Experiment, South African Journal of Science, 95, 35-43.

 

Piketh, S.J., Siddera-Haddad, E., Holmgren, K., and Tyson,, P.D., 1999: Proton

micro-probe analysis of a speleothem from South Africa, Nuclear Instruments and

Methods in Physics Research B, 158, 606-611. (A 3); (B 3); (C 0.997)

 

 Formenti, P., Piketh, S.J. and Annegarn, H.J., 1999: Detection of non-sea salt

sulphate aerosol at a remote coastal site in South Africa: A PIXE study, Nuclear

Instruments and Methods in Physics Research B, 150, 332-338.

 

Zunckel, M., Piketh, S.J. and Freiman, M.T., 1999: Dry deposition of sulphur at a

high altitude background station in South Africa, Water Air and Soil Pollution, 115,

445-463.

 

Meter, S, Formenti, F., Piketh, S.J., Annegarn, H.J., and Kneen, M.A., 1999: PIXE

investigation of aerosol composition over the Zambian copperbelt Nuclear

Instruments and Methods in Physics Research B, 150, 433-438.

 

 Gatebe, C.K., Tyson, P.D., Annegarn, H.J., Piketh, S.J. and Helas, G., 1999: A

seasonal transport climatology for Kenya, Journal of Geophysical Research, 104,

14237-14244.

 

Holmgren, K., Karlen, K., Lauritzen, S.E., Lee-Thorp, J.A., Partridge, T.C., Piketh,

S.J., Repinski, P., Stevenson, C., Svanered, O. and Tyson, P.D., 1999: A 3000-year

high resolution stalagmite-based record of paleoclimate for north-eastern South

Africa, Holocene, 9, 295-309.

 

Terblanche, D.E., Mittermaier, M.P., Piketh, S.J., Bruintjes, R.T. and Burger, R.F.,

2000: The aerosol recirculation and rainfall experiment- ARREX: An initial study

on aerosol-cloud interactions over South Africa, S Afr J Sci., 96, 15-21.

 

 Piketh, S.J., Tyson, P.D., Steffan, W., 2000: Aeolian transport from southern Africa

and iron fertilisation of marine biota in the south Indian Ocean, S Afr J Sci., 96, 244-

246.

 

 Kirkman, G., Piketh, S.J., Andreae, M.O, Annegarn, H.J. and Helas, G., 2000:

Distribution of aerosols, ozone and carbon monoxide over southern Africa, South

African Journal of Science, 96, 423-431.

 

 Ross, K.E., Piketh, S.J., Swap R.J. and Stauber, R., 2001: Controls Governing

Airflow over the South African Lowveld, South African Journal of Science, 97, 29-

40.

 

Gatebe, C.K., Tyson, P.D., Annegarn, H.J., Helas, G., Kinyua, A.M., Piketh, S.J.,

2001: Characterisation and transport of aerosols over equatorial eastern Africa,

Global Biogeochemical Cycles, 15, 3, 663-672.

 

Formenti, P., Winkler, H., Fourie, P., Piketh, S.J., Makgopa, B., Helas, G. and

Andreae, M.O., 2002: Aerosol optical depth over a remote semi-arid region of South

 

Africa from spectral measurements of the daytime solar extinction and the night-

time stellar extinction, Atmospheric Research, 62, 11-32.


 

Swap, R.J., Annegarn, H.J., Suttles, J.T., Haywood, J., Helmlinger, M., Hely, C.,

Hobbs, P.V., Holben, B.N., Ji, J., King, M., Landmann, T., Maenhaut, W., Otter, L.,

Pak, B., Piketh, S.J., Platnick, S., Privette, J., Roy, D., Thompson, A.M., Ward, D.,

Yokelson, R. (2002) The Southern African Regional Science Initiative (SAFARI

2000): Dry-Season Field Campaign: An Overview, S Afr J Sci., 98, 125-130.

 

Piketh, S.J., Swap, R.J., Maenhaut, W., Annegarn, H.J., Formenti, P. (2003)

Chemical evidence of long-range atmospheric transport over southern Africa,

Journal of Geophysical Research, 107, D24,4817, ACH7-1 – 7-13.

 

Queface, A., Piketh, S.J., Annegarn, H.J., Holben, B., Uthui, R. (2003) Retrieval of

aerosol optical thickness and size distribution from Cimel sun photometer over

Inhaca Island, Mozambique, Journal of Geophysical Research, 108, D13, SAF45-1

– SAF45-9.

 

Ross, K.E., Piketh, S.J., Bruintjes, R.T., Burger, R.P., Swap, R.J., Annegarn, H.J.

(2003) Spatial and seasonal variations in the distribution of cloud condensation

nuclei and the aerosol-cloud condensation nuclei relationship over southern Africa,

Journal of Geophysical Research, 108, D13, SAF17-1-SAF17-18.

 

Eck, T., Holben, B.N., Ward, D.E., Mukelabai, M.M., Dubovik, O., Smirnov, A.,

Schsafer, J.S., Hsu, N.C., Piketh, S.J., Queface, A., Le Roux, J., Swap, R.J. and

Sluster, I., (2003) Variability of biomass burning aerosol optical characteristics in

southern Africa during the SAFARI 2000 dry season campaign and a comparison

of single scattering albedo estimates, Journal of Geophysical Research, 108, D13,

SAF13-1-SAF13-20.

 

McMillan, W.W., McCourt, M.L., Revercomb, H.E., Knuteson, R.O., Christian,

T.J., Doddridge, B.G., Hobbs, P.V., Lukovich, J.V., Novelli, P.C., Piketh, S.J.,

Sparling, L., Stein, D., Swap, R.J., Yokelson, R.J. (2003) Tropospheric carbon

monoxide measurements from the scanning high-resolution interferometer sounder

on September 7, 2000 in southern Africa during SAFARI-2000, Journal of

Geophysical Research, 108, D13, SAF28-1-SAF28-13.

 

 Elias, T., Piketh, S.J., Burger, R., Silva, A.M. (2003) Evidence of an absorbing

fraction of the accumulation mode by ground-based columnar and airborne in situ

optical measurements, Journal of Geophysical Research, 108, D13, SAF44-1-

SAF44-16.

 

 Campbell, J.R., Welton, E.J., Spinhirne, J.D., Ji, Q., Tsay, S., Piketh, S.J.,

Barenbrug, M., Holben, B.N. (2003) Lidar observations of tropospheric aerosols

over north-eastern South Africa during the ARREX and SAFARI-2000 Dry Season

Experiments, Journal of Geophysical Research, 108, D13, SAF33-1-SAF33-19.

 

 Freiman, M.T. and Piketh, S.J. (2003) Air Transport Into And out of The Industrial

Highveld Region of South Africa, Journal of Applied Meteorology,42, 994-1002.

 

Swap, R.J., Szuba, T.A., Garstang, M., Annegarn, H.J., Marufu, L. and Piketh, S.J.,

2003: Spatial and temporal assessment of sources contributing to the annual austral

spring mid-troposphere ozone maxima over the tropical South Atlantic, Global

Change Biology, 9, 336-345.

 

Stein, D.C, Swap, R.J., Macko, S.A., Piketh, S.J., Doddridge, B. and Bruintjes, R.,

2003: Preliminary results of dry-season trace gas and aerosol measurements over

the Kalahari region during SAFARI-2000, Journal of Arid Environments, 54, 371-

379.

 

 Piketh, S.J. and Walton, N., 2004: Characteristics of atmospheric transport of air

pollution for Africa, Chapter 7, in Stohl, A., (ed.), The Handbook of Environmental

Chemistry, V 4/G, Intercontinental Transport of Air Pollution, Springer, 173-196.

 

Tlhalerwa, K., Freiman, M.T. and Piketh, S.J., 2005: Aerosol Deposition off the

Southern African West Coats by Berg Winds, South African Journal of Science, 87

(2), 152-161.

 

 Mdluli T., Piketh SJ., Igbafe A., 2005: Assessment of indoor respirable particulate

matter (PM7) in township houses with coal-fired stoves at Kwaguqua (Witbank).,

Quarterly Journal of the National Electricity Regulator, pp 11-24.

 

Igbafe, A.I., Jewell, L.L., Piketh, S.J. and Dlamini, T.S., 2006: A winter impact of

dilution on transformation rate in the planetary boundary layer, Journal of

Environmental Informatics, 8(1), 34-48.

 

 Reason, C.J.C., Engelbrecht, F., Landman, W.A., Lutjeharms, J.R.E., Piketh, S.J.,

Rautenbach, C.J. de W. and Hewitson, B.C., 2006: A review of South African

research omn atmospheric science and physical oceanography during 2000-2005, S

Afr J Sci., 102, 35-45.


 

Ross, K, Broccardo, S., Heue, K., Ferguson, K. and Piketh, S., 2007: Nitrogen

Oxides on the South African Highveld, Clean Air Journal, 16 (2),

DOI:10.17159/caj/2007/16/2.7166.

 

 Igbafe. A.I., Jewell, .L.L., Piketh, S.J., 2008: Thermochemical Analysis of Sulphur

Compounds: Implications for Atmospheric Sulphur Oxidation, Research Journal of

Applied Sciences, 3 (5), 393-405.

 

Heue, K.P., Wagner, T., Broccardo, S., Walter, D., Piketh, S.J., Ross, K., and Platt,

U., 2008: Direct observation of two dimensional trace gas distribution with an

airborne Imaging DOAS instrument, Atmospheric Chemistry and Physics, 8, 6707-

6717.

 

Jeffrey S. Reid, J.S., Reid, E.A., Walker, A., Piketh, S.J., Cliff, S., Mandoos, A.,

Tsay, S., and Eck, T.F., 2008: Dynamics of Southwest Asian Dust Particle Size

Characteristics with Implications for Global Dust Research, Journal of Geophysical

Research, D14212, DOI: 10.1029/2007JD009752.

 

Reid, J.S., Piketh, S.J., Westphal, D.L., Burger, R.P., Ross, K.E., Walker, A.L.,

Bruintjes, R.T., Holben, B.N., Hsu, C., Jensen, T.L., Kahn, R.A., Kuciauskas, A.P.,

Mandoos, A., Mangoosh, A., Miller, S.D., Porter, J.N., Tsay, S., 2008: An overview

of UAE2

 

flight operations: Observations of summertime atmospheric

thermodynamic and aerosol profiles of the southern Arabian Gulf, Journal of

Geophysical Research, 113 D14213, DOI:10.1029/2007JD009435.

 

 Igbafe A.I., and Piketh, S.J., 2009: Variations in the Order of Reaction: An

Implication on Atmospheric Diffusion with transformation and Deposition of SO2

in Smoke Plumes, Environmental Research Journal, 3 (1), 4-13, ISSN:1994-5396.

 

Josipovic, M., Annegarn, H.J., Kneen, M.A., Pienaar, J.J. and Piketh, S.J., 2009:

Concentrations, distributions and critical levels exceedance assessment of SO2, NO2

and O3 in South Africa, Environmental Monitoring and Assessment, DOI

10.1007/s10661-009-1270-5.

 

Smirnov, A., Holben, B.N., Slutsker, I., Giles, D.M., McClain, C.R., Eck, T.F.,

Sakerin, S.M., Macke, A., Croot, P., Zibordi, G., Quinn, P.K., Sciare, J., Kinne, S.,

Harvey, M., Smyth, T.J., Piketh, S.J., Zielinski, T., Proshutinsky, A., Goes, J.I.,

Nelson, N.B., Larouche, P., Radionov, V.F., Goloub, P., Krishna Moorthy, K.,

Matarrese, R., Robertson, E.J., Jourdin, F., 2009: Maritime Aerosol Network as a

component of Aerosol Robotic Network, Journal of Geophysical Research, 114,

D06204, doi:10.1029/2008JD011257.

 

 Collett K.S., Piketh S.J. and Ross K.E., 2010: The Atmospheric Nitrogen Budget

over the South African Highveld, S Afr J Sci., 106(5/6), DOI:

10.4102/sajs.v106i5/6.220.

 

Wilson, D.I., Piketh, S.J., Smirnov, A. Holben, B.N. and Kuyper, B., 2011: Aerosol

Optical Properties over the South Atlantic and Southern Ocean during the 140th

cruise of the M/V S.A. Agulhas, Atmospheric Research, 98(s 2–4):285–296. DOI:

10.1016/j.atmosres.2010.07.007

 

Josipovic M., Annegarn H.J., Kneen M.A., Pienaar J.J., Piketh S.J., 2011:

Atmospheric dry and wet deposition of sulphur and nitrogen species and assessment

of critical loads of acidic deposition exceedance in South Africa. S Afr J Sci.,

2011;107(3/4), DOI: 10.4102/ sajs.v107i3/4.478

 

Queface, A.J., Piketh, S.J., Eck, T.F., Tsay, S. and Mavume, A.F., 2011:

Climatology of aerosol optical properties in Southern Africa, Atmospheric

Environment, 45, 2910-2921.

 

Radke, B., Wasik, A., Jewell, L.L., Piketh, S.J., Pączek, U., Gałuszka, A., and

Namieśnik, J., 2012. Seasonal changes in organotin compounds in water and

sediment samples from the semi-closed Port of Gdynia, Science of the Total

Environment, 441C:57-66.

 

 Sitha, S., Jewell, L.L., Piketh, S.J., Fourie, G., 2011: A quantum chemical

calculation of the potential energy surface in the formation of HOSO2 from OH þ

SO2, Atmospheric Environment, 45, 745-754

 

 Laakso, L., Vakkari,V., Virkkula, A., Laakso, H., Backman, J., Kulmala, M.m

Beukes, J. P., van Zyl, P. G., Tiitta, P., Josipovic, M., Pienaar, J. J. , Chiloane, K.,

Gilardoni, S., Vignati, E., Wiedensohler, A., Tuch, T., Birmili, W., Piketh, S.J.,

Collett, K., Fourie, G.D., Komppula, M., Lihavainen, H., de Leeuw, G., and

Kerminen, V.M., 2012: South African EUCAARI measurements: seasonal variation

of trace gases and aerosol optical properties, Atmos. Chem. Phys., 12, 1847–1864.

 

 Radke, B., Jewell, L., Piketh, S.J., and Namieśnik, J., 2012: The arsenic warfare

agents- production, use and destruction. Critical Reviews in Environmental Science

and Technology, 44, 14, 1525-1576.

 

 Radke B., Piketh S., 2013. Temporal variation of total gaseous mercury content in

air samples from Mpumalanga region, Republic of South Africa. in: L. Falkowska

(ed). Rtęć a środowisku. Identyfikacja zagrożeń dla zdrowia człowieka.

Wydawnictwo Uniwersytetu Gdańskiego, Gdańsk pp. 39-46.

 

 Eck, T. F., B. N. Holben, J. S. Reid, M. M. Mukelabai, S. J. Piketh, O. Torres, H.

T. Jethva, E. J. Hyer, D. E. Ward, O. Dubovik, A. Sinyuk, J. S. Schafer, D. M. Giles,

M. Sorokin, A. Smirnov and I. Slutsker ( 2013), A seasonal trend of single

scattering albedo in southern African biomass-burning particles: Implications for

satellite products and estimates of emissions for the world's largest biomass-burning

source, J. Geophys. Res. Atmos., 118, DOI:10.1002/jgrd.50500.

 

Balashov, N. Thompson, A.M., Piketh, S.J., Langerman, K.E., 2014: Surface Ozone

Variability and Trends over the South African Highveld from 1990 to 2007, J.

Geophys. Res. Atmos.,119, DOI:10.1002/2013JD020555.

 

Radke, B., Piketh, S., Wasik, A., Namieśnik, J., Dembska, G., Bolałek, J., 2013:

Aspects of pollution in Gdansk and Gdynia harbours at the coastal zone of the South

Baltic Sea. The International Journal on Marine Navigation and Safety of Sea

Transportation, 7 (1), 11-18.

 

Piketh, S.J., Vogel, C., Dunsmore, S., Culwick, C., Engelbrecht, F., and Akoon ,I. ,

2013: Climate Change and Urban development in southern Africa: Business as

usual or business unusual?, WaterSA, Vol 40 No. 4, 749-758.

 

 Backman, J., A. Virkkula, V. Vakkari, J. P. Beukes, P. Van Zyl, M. Josipovic, S.J.

Piketh, P. Tiitta, K. Chiloane, T. Petäjä, M. Kulmala, and L. Laakso, 2014:

Differences in aerosol absorption Ångström exponents between correction

algorithms for particle soot absorption photometer measured on South African

Highveld, Atmospheric Measurement Techniques, 7, 9733-9769.

 

 Hersey, S.P., R. M. Garland, E. Crosbie, T. Shingler, A. Sorooshian, S.J. Piketh,

and R.P. Burger, 2014: An overview of regional and local characteristics of aerosols

in South Africa using satellite, ground, and modeling data, Atmos. Chem. Phys.

Discuss, 14, 24701-24752.

 

 Sundström,A.M., A. Nikandrova, K. Atlaskina, T. Nieminen, V. Vakkari, L.

Laakso, J. P. Beukes, A. Arola, P. G. van Zyl, M. Josipovic, A. D. Venter, K. Jaars,

J. J. Pienaar, S. Piketh, A. Wiedensohler5, E. K. Chiloane, G. de Leeuw, and M.

Kulmala, 2014: Characterization of satellite based proxies for estimating nucleation

mode particles over South Africa, Atmos. Chem. Phys., 15, 4983–4996,

2015www.atmos-chem-phys.net/15/4983/2015/doi:10.5194/acp-15-4983-2015.

 

 E. Giannakaki, A. Pfüller, K. Korhonen, T. Mielonen, L. Laakso, V. Vakkari, H.

Baars, R. Engelmann, J. P. Beukes, P. G. Van Zyl, M. Josipovic, P. Tiitta, K.

Chiloane, G. D. Fourie, S. Piketh, H. Lihavainen, K.E.J. Lehtinen and M.

Komppula, 2014: One year of Raman lidar observations of free tropospheric

aerosol layers over South Africa, Atmos. Chem. Phys. Discuss, 15, 5429–5442.


 

C. Tomasi, A. A. Kokhanovsky, A. Lupi, C., Ritter, A. Smirnov, N. T. O’Neill, R.S.

Stone, B.N. Holben, S. Nyeki, C. Wehrli, A. Stohl, M. Mazzola, C. Lanconelli, V.

Vitale, K., Stebel, V., Aaltonen, G., de Leeuw, E., Rodriguez, A.B., Herber, V.F.,

Radionov, T., Zielinski, T. Petelski, S.M, Sakerin, D.M. Kabanov, Y. Xue, L. Mei,

L. Istomina, R. Wagener, B. McArthur, P.S. Sobolewski, R. Kivi, Y. Courcoux, P.

Larouche, S. Broccardo and S.J. Piketh, 2014: Aerosol remote sensing in Polar

regions, Earth Science Reviews, 140, 108-157.

 

 M., Tongwane, S.J., Piketh, L., Stevens, T., Ramotubei, 2014: Greenhouse gas

emissions from road transport in South Africa and Lesotho between 2000 and 2009,

Transportation Research Part D: Transport and Environment, 37, 1-13.

 

Pretorius, I., S.J. Piketh, R.P. Burger and H.W.J.P. Neomagus, 2015: A perspective

of South African coal fired power station emissions power plant emissions, South

African Journal of Energy, 26 (3), 27-40.

66) Pretorius, I., S.J. Piketh and R. P. Burger, 2015. The impact of the South African

energy crisis on emissions. WIT Transactions on Ecology and The Environment,

198, ISSN 1743-3541

 

Liebenberg, D., van Hamburg, H., Piketh, S.J., Burger, R.P., 2015: Comparing the

effect of climatic variables on the distribution of African horse sickness in South

Africa and Namibia, 40(2), Journal of Vector Ecology, 333-41.

DOI:10.1111/jvec.12172.

 

Wernecke, B., Language, B., Piketh, S.J., Burger, R.P., Indoor and outdoor

particulate matter concentrations on the Mpumalanga highveld – A case study,

Clean Air Journal, 25(2), http://dx.doi.org/10.17159/2410-972X/2015/v25n2a1.

 

Adesins A.J. Kumar, K.R., Sivakumar, V and Piketh S.J., 2016: Intercomparison

and assessment of Long-term (2004-2013) multiple satellite aerosols products over

two contrsting sites in South AFriuca, Journal of Atmospheric and Solar-Terrestrial

Physics, 148, 82–95.

 

Liebenberg, D., Piketh, S., Labuschagne, K., Venter, G., Greyling, T., Mienie, C.,

de Waal, T., and van Hamburg, H., 2016: Culicoides species composition and

environmental factors influencing African horse sickness distribution at three sites

in Namibia, Acta Tropica, 163, 70-79.

 

Liebenberg, D., Piketh, S. and van Hamburg, H., 2016: A web-based survey of horse

owners’ perceptions and network analysis of horse movements relating to African

horse sickness distribution in Namibia and South Africa, Acta Tropica, 158, 201-

207.

 

Zuidema, P., Redemann, J., Haywood, J., Wood, R., Piketh, S., Hipondoka, M. and

Formenti, P., 2016: Smoke and Clouds above the Southeast Atlantic, Upcoming

Field Campaigns Probe Absorbing Aerosol’s Impact on Climate, Bulletin of the

American Meteorological Society, doi/pdf/10.1175/BAMS-D-15-00082.1.

 

 Language, B., Piketh, S. J. and Burger, R. P. (2016) ‘Correcting respirable

photometric particulate measurements using a gravimetric sampling method’, Clean

Air Journal, 26(1), pp. 10–14, ISSN 2410-972X.

 

Language, B., Piketh, S. J., Wernecke, B. and Burger, R. P. (2016) ‘Household Air

Pollution in South African Low-Income Settlements: A Case Study’, WIT

Transactions on Ecology and the Environment, 207, pp. 227-236. (ISBN: 978-1-

78466-129-8).

 

Di Biagio, C., Formenti, P., Balkanski, Y., Caponi, L., Cazaunau, M., Pangui, E.,

Journet, E., Nowak, S., Caquineau, S., Andreae, M. O., Kandler, K., Saeed, T.,

Piketh, S., Seibert, D., Williams, E., and Doussin, J.-F., 2016: Global scale

variability of the mineral dust longwave refractive index: a new dataset of in situ

measurements for climate modelling and remote sensing, Atmos. Chem. Phys.,

DOI:10.5194/acp-2016-616.

 

 Stevens, L.B., Henri, A.J., van Nierop, M.A., van Staden, E., Lodder, J. and Piketh,

S.J., 2016, Towards the development of a GHG emissions baseline for the

Agriculture, Forestry and Other Land Use (AFOLU) sector, South Africa, Clean Air

Journal, 26 (2): 34-38, DOI: 10.17159/2410-972X/2016/v26n2a11.

 

Lodder, J., van Nierop, M.A., van Staden, E. and Piketh, S.J., 2016, Characterising

the impact of rainfall on dustfall rates, Clean Air Journal, 26 (2): 28-33.

 

 Kakua, K.C., Reid J.S., Reid, E.A., Ross-Langerman, K., Piketh, S.J., Cliffe, S.,

Mandoos, A., Broccardo, S. , Zhaoe, Y., Zhangg,J., Perry, K.D., 2016: Investigation

of the relative fine and coarse mode aerosol loadings and properties in the Southern

Arabian Gulf Region, Atmospheric Research, 169 (A), 171-182

 

Caponi, L., Formenti, P., Massabo', D., Di Biagio, C., Cazaunau, M., Pangui, E.,

Chevaillier, S., Landrot, G., Andreae, M.O., Kandler, K., Piketh, S., Saeed, T.,

 

Siebert, D., Williams, E., Balkanski, Y., Prati, P., and Doussin, J., 2017: Spectral-

and size-resolved mass absorption efficiency of mineral dust aerosols in the

 

shortwave: a simulation chamber study, Atmos. Chem. Phys., acp-2017-5,

doi:10.5194/acp-2017-5.

 

Broccardo, S., Heue, K., Walter, D., Meyer, C., Kokhanovsky, A., v.d. A, R., Piketh,

S., Langermann, K., Platt, U., 2017: Intra-pixel variability in satellite tropospheric

NO2 column densities derived from simultaneous spaceborne and airborne

observations, Atmospheric Measurement Techniques, amt-2016-366.

 

Kühn, T., Bunt, J.R., Neomagus, H.W.J.P., Piketh, S.J., Everson, R.C., Coetzee, S.,

2017: Coal-derived low smoke fuel assessment through coal stove combustion

testing., Journal of Analytical and Applied Pyrolysis,

http//dx.doi.org/10.1016/j.jaap.2017.06.012

 

Adesina, A.J., Piketh, S., Kanike, R.K., Venkataraman, S., 2017: Characteristics of

columnar aerosol optical and microphysical properties retrieved from the sun

photometer and its impact on radiative forcing over Skukuza (South Africa) during

1999–2010, Environ Sci Pollut Res, DOI:10.1007/s11356-017-9211-2.

 

Muyemeki, L., Burger, R., Piketh, S.J., Evans, S.W., 2017. Bird species richness

and densities in relation to sulphur dioxide gradients and environmental variables.

Journal of African Ornithology, 8 (3), pg 253-259, DOI:

10.2989/00306525.2017.1310144.

 

Holben, B.N, Kim, J., Sano, I., Mukai, S., Eck, T. F., Giles, D. M., Schafer, J. S.,

Sinyuk, A., Slutsker, I., Smirnov, A., Sorokin, M., Anderson, B.E., Che, H., Choi,

M., Crawford, J.E., Ferrare, R.A., Knox, N., Maring, H., Garay, M.J., Jeong, U.,

Kim, M., Kim, W., Li, W., Lim, H.S., Nakata, M., Pickering, K.E., Piketh, S.,

Redemann, J., Reid, J.S., Salinas, S., Seo, S., Tan, F., Tripathi, S.N., Toon, O.B.,

Xiao, Q., 2017. An overview of meso-scale aerosol processes, comparison and

validation studies from DRAGON networks, Atmos. Chem. Phys., 18, 655–671,

2018, https://doi.org/10.5194/acp-18-655-2018.

 

Kapwata, T., Language, B., Piketh, S., Wright, C.Y. 2018: Variation of Indoor

Particulate Matter Concentrations and Association with Indoor/Outdoor

Temperature: A Case Study in Rural Limpopo, South Africa. Atmosphere, 9(4),

124, https://doi.org/10.3390/atmos9040124.

 

Nkosi, N.C., Piketh, S.J., and Burger, R.P., 2018. Fine PM emission factors from

residential burning of solid fuels using traditional cast-iron coal stoves, Clean Air

Journal, http://dx.doi.org/10.17159/2410-972X/2017/v27n2a7.

 

Formenti, P., Piketh, S.J., Namwoonde, A., Klopper, D., Burger, R., Cazaunau, M.,

Feron, A., Gaimoz, C., Broccardo, S., Walton, N., Desboeufs, K., Siour, G.,

Hanghome, M., Mafwila, S., Omoregie, E., Junkermann, W., and Maenhaut, W.,

2018: Three years of measurements of light-absorbing aerosols over coastal

 

Namibia: seasonality, origin, and transport, Atmos. Chem. Phys., 18, 17003–17016,

2018, https://doi.org/10.5194/acp-18-17003-2018.

 

Belelie, M.D., Piketh, S.J., Burger, R.P., Venter, A.D., Naidoo, M., 2019.

Characterisation of ambient Total Gaseous Mercury concentrations over the South

African Highveld. Atmospheric Pollution Research, 10 (1), pp 12-23,

DOI:10.1016/j.apr.2018.06.001.

 

Chidhindi, P., Belelie, M.D., Burger, R.P., Mkhatshwa, G. and Piketh, S.J., 2019:

Assessing the application of AERMOD in modelling tall stack emissions on the

Highveld, Clean Air Journal, https://doi.org/10.17159/2410-972X/2019/v29n1a2.

 

Adesina, J.A., Piketh, S.J., Qhekwana, M., Burger, R., Language, B. and

Mkhatshwa, G., 2019: Contratsting indoor and ambient particulate matter

concentrations and thermal comfort in coal and non-coal burning housholds at South

Africa Highveld, Science of the Total Environment, 699,

https://doi.org/10.1016/j.scitotenv.2019.134403.

 

Di Biagio, C., Formenti, P., Balkanski, Y., Caponi, L., Cazaunau, M., Pangui, E.,

Journet, E., Nowak, S., Andreae, M.O, Kandler, K., Saeed, Y., Piketh, S., Seibert,

D., Williams, E. and Doussin, J., 2019: Complex refractive indices and single

scattering albedo of global dust aerosols in the shortwave spectrum and relationship

to iron content and size, Atmos. Chem. Phys., 19, 15503–15531, 2019,

doi.org/10.5194/acp-19-15503-2019.

 

Formenti, P., D’Anna, B., Flamant, C., Mallet, M., Piketh, S.J., Schepanski, K.,

Waquet, F., Auriol, F., Brogniez, G., Burnet, F., Chaboureau, J., Chauvigné, A.,

Chazette, P., Denjean, C., Desbsboeufsfs, K., Doussssin, J., Elguindi, N.,

Feuerstein, S., Gaetani, M., Giorio, C., Klopper, D., Mallet, M.D., Nabat, P.,

Monod, A., Solmon, F., Namwoonde, A., Chikwililwa, C., Mushi, R., Welton, E.J.

and Holben, B., 2019: The aerosols, radiation and clouds in southern Africa field

campaign in Namibia, Overview, Illustrative Observations, and Way Forward,

Bulletin of the American Meteorological Society, pp. 1277-1298,

DOI:10.1175/BAMS-D-17-0278.1

 

Matandirotya, N., Cilliers, D.P., Burger, R.P., Language, B., Pauw C. and Piketh,

S.J., 2019: The potential for domestic thermal insulation retrofits on the South

African Highveld, Clean Air Journal, https://doi.org/10.17159/2410-

972X/2019/v29n1a1.

 

 LeBlanc, S. E., Redemann, J., Flynn, C., Pistone, K., Kacenelenbogen, M., Segal-

Rosenheimer, M., Shinozuka, Y., Dunagan, S., Dahlgren, R. P., Meyer, K.,

 

Podolske, J., Howell, S. G., Freitag, S., Small-Griswold, J., Holben, B., Diamond,

M., Wood, R., Formenti, P., Piketh, S., Maggs-Kölling, G., Gerber, M. and

Namwoonde, A., 2020: Above-cloud aerosol optical depth from airborne

observations in the southeast Atlantic, Atmos. Chem. Phys., 20, 1565–1590,

https://doi.org/10.5194/acp-20-1565-2020.

 

Bègue, N., Shikwambana, L., Bencherif, H., Pallotta, J., Sivakumar, V., Wolfram,

E., Mbatha, N., Orte, F., Du Preez, D.J., Ranaivombola, M., Piketh, S., and

Formenti, P., 2020: Statistical analysis of the long-range transport of the 2015

Calbuco, Ann. Geophys., 38, 395–420, https://doi.org/10.5194/angeo-38-395-2020.

 

McGill, M.J., Swap, R.J., Yorks, J.E., Selmer, P.A., Piketh, S.J., 2020: Observation

and quantification of aerosol outflow from southern Africa using spaceborne lidar.

S Afr J Sci. 2020;116(3/4), Art. #6398, 6 pages.

https://doi.org/10.17159/sajs.2020/6398.

 

Muyemeki, L., Burger, R., and Piketh, S.J., 2020: Evaluating the potential of remote

sensing imagery in mapping ground-level fine particulate matter (PM2.5) for the

Vaal Triangle Priority Area, Clean Air Journal, 30 (1), 1-7,

https://doi.org/10.17159/caj/2020/30/1.8066

 

Sumbane-Prinsloo, L., Bunt, J., Matjie, R., Piketh, S., Neomagus, H., Waanders, F.,

2020: The effect of particle size on the pollution reduction potential of a South

African coal-derived low-smoke fuel, Energy Geoscience, 1, 165-173,

https://doi.org/10.1016/j.engeos.2020.06.006.

 

Klopper, D., Formenti, P., Namwoonde, P., Cazaunau, M., Chevaillier, S., Feron.

A., Gaimoz, C., Hease, P., Lahmidi, F., Mirande-Bret, C., Triquet, S., Zeng, Z., and

Piketh, S.J., 2020: Chemical compoistion and surce apportionment of atmospheric

aerosols on the Namibian Coast, Atmos. Chem. Phys., 20, 15811–15833, 2020.

 

 Xulu, N.A., Piketh, S.J., Feig, G.T., Lack, D.A. and Garland, R.M. (2020).

Characterizing Light‐absorbing Aerosols in a Low‐income Settlement in South

Africa. Aerosol Air Qual. Res. https://doi.org/10.4209/aaqr.2019.09.0443.

 

Redemann, J., Wood, R., Zuidema, P., Doherty, S.J., Luna, B., LeBlanc, S.E.,

Diamond, M.S., Shinozuka, Y., Chang, I.Y., Ueyama, R., Pfister, L., Ryoo, J.,

Dobracki, A.N., da Silva, A.M., Longo, K.M., Kacenelenbogen, M.S., Flynn, C.J.,

Pistone, K., Knox, K.M., Piketh, S.J., Haywood, J.M., Formenti1, P., Mallet, M.,

Stier, P., Ackerman, A.S., Bauer, S., Fridlind, A.M., Carmichael, G.R., Saide, P.E.,

Ferrada, G.A., Howell, S.G., Freitag, S., Cairns, B. Holben, B.N., Knobelspiesse,

K.D., Tanelli, S., L’Ecuyer, T.S., Dzambo, A.M., Sy, O.O., McFarquhar, G.M.,

Poellot, M.R., Gupta, S., O’Brien, J.R., Nenes, A., Kacarab, M., Wong, J.P.S.,

Small-Griswold, J.D., Thornhill, K.L., Noone, D., Podolske, J.R., Schmidt, K.S.,

 

Pilewskie, P., Chen, H., Cochrane, S.P., Sedlacek, A.J., Lang, T.J., Stith, E., Segal-

Rozenhaimer, M., Ferrare, R.A., Burton, S.P., Hostetler, C.A., Diner, D.J., Platnick,

 

S.E., Myers, J.S., Meyer, K.G., Spangenberg, D.A. Maring, H., and Gao, L., 2020:

An overview of the ORACLES (ObseRvations of Aerosols above CLouds and their

intEractionS) project: aerosol-cloud-radiation interactions in the Southeast Atlantic

basin, Atmos. Chem. Phys, https://doi.org/10.5194/acp-2020-449.

 

Prof Pieter Van Zyl

Brown, H., Liu, X., Pokhrel, R., Murphy, S., Lu, Z., Saleh, R., Mielonen, T., Kokkola, H., Bergman, T., Myhre, G., Skeie, R.B., Watson-Paris, D., Stier, P., Johnson, B., Bellouin, N., Schulz, M., Vakkari, V., Beukes, J.P., Van Zyl, P.G., Liu, S., Chand, D., Biomass burning aerosols in most climate models are too absorbing, Nature Communications, 12, 277, 2021, https://doi.org/10.1038/s41467-020-20482-9

 

Ngoasheng, M., Beukes, J.P., Van Zyl, P.G., Swartz, J.-S., Loate, V., Krisjan, P., Mpambani, S., Kulmala, M., Vakkari, V., Laakso, L., Assessing SO2, NO2 and O3 in rural areas of the North West Province, Clean Air Journal, Volume 31, No 1, 2021, https://doi.org/10.17159/caj/2021/31/1.9087

 

Muyemeki, L., Burger, R., Piketh, S.J., Language, B., Beukes, J.P., Van Zyl, P.G., Source apportionment of ambient PM10−2.5 and PM2.5 for the Vaal Triangle, South Africa, South African Journal of Science, 117, 5/6, Art. #8617, 11 pages, 2021, https:// doi.org/10.17159/sajs.2021/8617

 

Glastonbury, R.I., Beukes, J.P., Van Zyl, P.G., Tangstad, M., Ringdalen, E., Dall, D., Steenkamp, J.D., Mushwana, M. Characterisation of a Real-World Søderberg Electrode, Metals, 11, 5, 2021, https://dx.doi.org/10.3390/met11010005

 

Khumalo, L., Kornelius, G., Van Zyl, P.G., Hall, G., An exploratory characterisation of the carbon and stable isotope composition of atmospheric particulate matter from opencast coal mining activities and adjacent communities, Clean Air Journal, Volume 30, No 2, 2020, https://doi.org/10.17159/caj/2020/30/2.8564

 

Räsänen, M., Merbold, L., Vakkari, V., Aurela, M., Laakso, L., Beukes, J.P., Van Zyl, P.G., Josipovic, M., Feig, G., Pellikka, P., Rinne, J., Katul, G.G., Root-zone soil moisture variability across African savannas: From pulsed rainfall to land-cover switches, Ecohydrology, 13:e2213, 2020, https://doi.org/10.1002/eco.2213 

 

Laban, T.L., Van Zyl, P.G., Beukes, J.P., Mikkonen, S., Santana, L., Josipovic, M., Vakkari, V., Thompson A.M., Kulmala, M., Laakso, L., Statistical analysis of factors driving surface ozone variability over continental South Africa, Journal of Integrative Environmental Sciences, 17:3, 1-28, 2020, DOI: 10.1080/1943815X.2020.1768550

 

Swartz, J.-S., Van Zyl, P.G., Beukes, J.P., Galy-Lacaux, C., Ramandh, A., Pienaar, J.J., Measurement report: Statistical modelling of long-term trends of atmospheric inorganic gaseous species within proximity of the pollution hotspot in South Africa, Atmospheric Chemistry and Physics, 20, 10637–10665, 2020, https://doi.org/10.5194/acp-20-10637-2020

 

Swartz, J.-S., Van Zyl, P.G., Beukes, J.P., Labuschagne, C., Brunke, E.-G., Portafaix, T, Galy-Lacaux, C., Pienaar, J.J., Twenty-one years of passive sampling monitoring of SO2, NO2 and O3 at the Cape Point GAW station, South Africa, Atmospheric Environment, 222, 117128, 2020, https://doi.org/10.1016/j.atmosenv.2019.117128

 

Venter, M., Beukes, J.P., Van Zyl, P.G., Vakkari, V., Virkkula, A., Josipovic, M., Kulmala, M., Laakso, L., Six-year observations of aerosol optical properties at a southern African grassland savannah site, Atmospheric Environment, 230, 117477, 2020, https://doi.org/10.1016/j.atmosenv.2020.117477

 

Vakkari, V., Beukes, J.P., Josipovic, M., Van Zyl, P.G., Observations of ozone formation in southern African savanna and grassland fire plumes, Atmospheric Environment, 223, 117256, 2020, https://doi.org/10.1016/j.atmosenv.2019.117256

 

Maritz, P., Beukes, J.P., Van Zyl, P.G., Liousse, C., Gardrat, E., Ramandh, A., Mkhatshwa, G.V., Temporal and source assessments of organic and elemental carbon at sites in the northern South African interior, Journal of Atmospheric Chemistry, 2020, https://doi.org/10.1007/s10874-020-09398-2

 

Booyens, W., Van Zyl, P.G., Beukes, J.P., Ruiz-Jimenez, J., Kopperi, M., Riekkola, M.-L., Vakkari, V., Josipovic, M., Kulmala, M., Laakso, L., Characterising particulate organic nitrogen at a savannah-grassland region in South Africa, Atmosphere, 10, 492, 2019, doi:10.3390/atmos10090492

 

Booyens, W., Beukes, J.P., Van Zyl, P.G., Ruiz-Jimenez, J., Kopperi, M., Riekkola, M.-L., Josipovic, M., Vakkari, V. and Laakso, K., Assessment of polar organic aerosols at a regional background site in southern Africa, Journal of Atmospheric Chemistry, 76:89–113, 2019, https://doi.org/10.1007/s10874-019-09389-y

 

Josipovic, M., Liousse, C., Crobeddu, B., Baeza-Squiban, A., Segakweng, C.K., Galy-Lacaux, C., Beukes, J.P., Van Zyl, P.G., Fourie, G.D., Aerosol characterisation including oxidative potential as a proxy of health impact: A case of a residential site in a highly industrialised area, Clean Air Journal, Volume 29, No 2, 2019, https://doi.org/10.17159/caj/2019/29/2.7517

 

Gierens, R.T., Henriksson, S., Josipovic, M., Vakkari, V., Van Zyl, P.G.,Beukes, J.P., Wood, C.R. and O’Connor, E.J., Observing continental boundary-layer structure and evolution over the South African savannah using a ceilometer, Theoretical and Applied Climatology, 136, 333–346, 2019, https://doi.org/10.1007/s00704-018-2484-7

 

Vakkari, V., Manninen, A.J., O’Connor, E.J., Schween, J.H., Van Zyl, P.G., and Marinou, E., A novel post-processing algorithm for Halo Doppler lidarsAtmospheric Measurment Techniques, 12, 839–852, 2019 https://doi.org/10.5194/amt-12-839-2019

 

Du Preez, S.P., Beukes, J.P., Paktunc, D., Van Zyl, P.G. and Jordaan, A., Recycling pre-oxidized chromite fines in the oxidative sintered pellet production process, The Journal of the Southern African Institute of Mining and Metallurgy, 119, 207-215, 2019, http://dx.doi.org/10.17159/2411-9717/2019/v119n2a13

 

Henriksson, S., Sundström, A-M., Josipovic, M., Van Zyl, P.G. and Beukes, J.P., Simulating effects of aerosols on rainfall in southern Africa, Air Quality, Atmosphere & Health, 12, 1–10, https://doi.org/10.1007/s11869-018-0619-8, 2019

 

Du Preez, S.P., Beukes, J.P., Van Zyl, P.G., Tangstad, M. and Tiedt, L.R.,  Silicon carbide formation enhanced by in-situ formed silicon nitride – an approach to capture thermal energy of CO-rich off-gas combustion  Metallurgical and Materials Transactions B, 49, 3151–3163, doi:10.1007/s11663-018-1413-6, 2018 

 

Van Staden, Y., Beukes, J.P., Van Zyl, P.G., Ringdalen, E., Tangstand, M.,  Kleynhans, E.L.J. and Bunt, J.R.,  Damring formation during rotary kiln chromite pre-reduction: Effects of pulverized carbonaceous fuel selection and partial pellet melting,  Metallurgical and Materials Transactions B, 49, 3488–3503, doi:10.1007/s11663-018-1376-7, 2018 

 

Venter, A.D., Van Zyl, P.G., Beukes, J.P., Josipovic, M., Jaars, K., Booyens, W., Vakkari, V., Laakso, L., and Kulmala, M., Size-resolved characteristics of inorganic ionic species in atmospheric aerosols at a regional background site on the South African Highveld, Journal of Atmospheric Chemistry, 75(3), 285-304, 2018, doi: 10.1007/s10874-018-9378-z 

 

Laban, T.L., Van Zyl, P.G., Beukes, J.P., Vakkari, V., Jaars, K., Borduas-Dedekind, N., Josipovic, M., Thompson, A.M., Kulmala, M. and Laakso, L., Seasonal influences on surface ozone variability in continental South Africa and implications for air quality, Atmospheric Chemistry and Physics, Atmospheric Chemistry and Physics, 18, 15491–15514, 2018, https://doi.org/10.5194/acp-18-15491-2018

 

Vakkari, V., Beukes, J.P., Dal Maso, M., Aurela, M., Josipovic, M.and Van Zyl, P.G., Major secondary aerosol formation in southern African open biomass burning plumes, Nature Geoscience, 11 (8): 580–583, 2018, www.nature.com/naturegeoscience

 

Beukes, J.P., Van Zyl, P.G., Sofiev, M., Soares, J., Liebenberg-Enslin, H., Shackleton, N. and Sundström, A.-M., The use of satellite observations of fire radiative power to estimate the availabilities (activity patterns) of pyrometallurgical smelters, The Journal of the Southern African Institute of Mining and Metallurgy, 118(6): 619 – 624, 2018, http://dx.doi.org/10.17159/2411-9717/2018/v118n6a9

 

Jaars, K., Vestenius, M., Van Zyl, P.G., Beukes, J.P., Hellén, H., Vakkari, V., Venter, M., Josipovic, M. and Hakola, H., Receptor modelling and risk assessment of volatile organic compounds measured at a regional background site in South Africa. Atmospheric Environment, 172  133–148, 2018, http://dx.doi.org/10.1016/j.atmosenv.2017.10.047 

 

Kollonige, D.E., Thompson, A.M., Josipovic, M., Tzortziou, M., Beukes, J.P., Burger, R., Martins, D.K., Van Zyl, P.G., Vakkari, V. and Laakso, L. 2017. OMI Satellite and Ground-Based Pandora Observations and Their Application to Surface NO2 Estimations at Terrestrial and Marine Sites, Journal of Geophysical Research: Atmospheres, 123 (2), 1441–1459, 2018, https://doi.org/10.1002/2017JD026518 

 

Mohale, G.T.M.,Beukes, J.P.,Kleynhans, E.L.J., Van Zyl, P.G., Bunt, J.R., Tiedt, L.R., Venter, A.D. and Jordaan, A., SEM image processing as an alternative method to determine chromite pre-reduction. The Journal of the Southern African Institute of Mining and Metallurgy, 117: 1045 – 1052, 2017, http://dx.doi.org/10.17159/2411-9717/2017/v117n11a9 

 

Beukes, J.P., Du Preez, S.P., Van Zyl, P.G., Paktunc, D., Fabritius, T., Päätalo, M., Cramer, M., Review of Cr(VI) environmental practices in the chromite mining and smelting industry – Relevance to development of the Ring of Fire, Canada. Journal of Cleaner Production, 165: 874–889, 2017, doi:10.1016/j.jclepro.2017.07.176

 

Chiloane, K.E., Beukes, J.P., Van Zyl, P.G., Maritz, P., Vakkari, V., Josipovic, M., Venter, A.D., Jaars, K., Tiitta, P., Kulmala, M., Wiedensohler, A., Liousse, C., Mkhatshwa, G.V., Ramandh, A. and Laakso, L., Spatial, temporal and source contribution assessments of black carbon over the northern interior of South Africa. Atmospheric Chemistry and Physics, 17: 6177–6196, 2017, doi:10.5194/acp-17-6177-2017

 

Kleynhans, E.L.J., Beukes, J.P., Van Zyl, P.G. and Fick, J.I.J., Techno-economic feasibility of a pre-oxidation process to enhance pre-reduction of chromite. The Journal of the Southern African Institute of Mining and Metallurgy, 117: 457–468, 2017, doi:10.17159/2411-9717/2017/v117n5a8.

 

Du Preez, S.P., Beukes, J.P., Van Dalen, W.P.J., Van Zyl, P.G., Paktunc, D. and Loock-Hattingh, M.M., Aqueous solubility of Cr(VI) compounds in ferrochrome bag filter dust and the implications thereof, Water SA, 43 (2), 298-309, April 2017, http://dx.doi.org/10.4314/wsa.v43i2.13

 

Venter, A.D., Van Zyl, P.G., Beukes, J.P., Josipovic, M., Hendriks, J., Vakkari, V. and Laakso, L., Atmospheric trace metals measured at a regional background site (Welgegund) in South Africa, Atmospheric Chemistry and Physics, 17, 4251–4263, 2017, www.atmos-chem-phys.net/17/4251/2017/, doi:10.5194/acp-17-4251-2017

 

Räsänen, M., Aurela, M., Vakkari, V., Beukes, J.P, Tuovinen, J.-P., Van Zyl, P.G., Josipovic, M., Venter, A.D., Jaars, K., Siebert, S.J., Laurila, T., Rinne, J. and Laakso, L., Carbon balance of a grazed savanna grassland ecosystem in South Africa, Biogeosciences, 14, 1039–1054, 2017, www.biogeosciences.net/14/1039/2017/, doi:10.5194/bg-14-1039-2017

 

Kleynhans, E.L.J., Beukes, J.P., Van Zyl, P.G., Bunt, J.R., Nkosi, N.S.B. and Venter, M., The Effect of Carbonaceous Reductant Selection on Chromite Pre-reduction, Metallurgical and Materials Transactions B, 48B, 827-840, 2017 doi: 10.1007/s11663-016-0878-4

 

Jaars, K., Van Zyl, P.G., Beukes, J.P., Hellén, H., Vakkari, V., Josipovic, M., Venter A.D., Räsänen, et al., M., Knoetze, L., Cilliers, D.P., Siebert, S.J., Kulmala, M., Rinne, J., Guenther, A., Laakso, L. and Hannele Hakola, Measurements of biogenic volatile organic compounds at a grazed savannah grassland agricultural landscape in South Africa, Atmospheric Chemsitry and Physics, 16, 15665–15688, 2016, www.atmos-chem-phys.net/16/15665/2016/, doi:10.5194/acp-16-15665-2016.

 

Dunnink, J.A., Curtis, C.J., Beukes, J.P., Van Zyl, P.G. and Swartz, J., The sensitivity of Afromontane tarns in the Maloti-Drakensberg region of South Africa and Lesotho to acidic deposition, African Journal of Aquatic Science, 41(4), 413–426, 2016, http://dx.doi.org/10.2989/16085914.2016.1244509 (ISSN 1608-5914 EISSN 1727-9364)

 

Venter, A.D., Beukes, J.P., Van Zyl, P.G., Josipovic, M., Jaars, K. and Vakkari, V., Regional atmospheric Cr(VI) pollution from the Bushveld Complex, South Africa, Atmospheric Pollution Research, 7, 762-767, 2016, http://dx.doi.org/10.1016/j.apr.2016.03.009

 

Mafusire, G., Annegarn, H.J., Vakkari, V., Beukes, J.P., Josipovic, M., Van Zyl, P.G. and Laakso, L., Submicrometer aerosols and excess CO as tracers for biomass burning air mass transport over southern Africa, Journal of Geophysical Research: Atmospheres, 121, 10,262–10,282, 2016, doi:10.1002/ 2015JD023965.

 

Conradie, E.H., Van Zyl, P.G.,Pienaar, J.J., Beukes, J.P., Galy-Lacaux, C., Venter, A.D. and Mkhatshwa, G.V., The chemical composition and fluxes of atmospheric wet deposition at four sites in South Africa, Atmospheric Environment, 146, 113-131, 2016, http://dx.doi.org/10.1016/j.atmosenv.2016.07.033

 

Giannakaki, E., Van Zyl, P.G., Müller, D., Balis, D. and Komppula, M., Optical and microphysical characterization of aerosol layers over South Africa by means of multi-wavelength depolarization and Raman lidar measurements, Atmospheric Chemistry and Physics, 16, 8109–8123, 2016, www.atmos-chem-phys.net/16/8109/2016/, doi:10.5194/acp-16-8109-2016

 

Baars, H., Kanitz, T., Engelmann, R., Althausen, D., Heese, B., Komppula, M., Preißler, J., Tesche, M., et al., Albert Ansmann, Ulla Wandinger, Jae-Hyun Lim, Joon Young Ahn, Iwona S. Stachlewska, Vassilis Amiridis, Eleni Marinou, Patric Seifert, Julian Hofer, Annett Skupin, Florian Schneider, Stephanie Bohlmann, Andreas Foth, Sebastian Bley, Anne Pfüller, Eleni Giannakaki, Heikki Lihavainen, Yrjö Viisanen, Rakesh Kumar Hooda, Sérgio Nepomuceno Pereira, Daniele Bortoli, Frank Wagner, Ina Mattis, Lucja Janicka, Krzysztof M. Markowicz, Peggy Achtert, Paulo Artaxo, Theotonio Pauliquevis, Rodrigo A. F. Souza, Ved Prakesh Sharma, Pieter Gideon van Zyl, Johan Paul Beukes, Junying Sun, Erich G. Rohwer, Ruru Deng, Rodanthi-Elisavet Mamouri and Felix Zamorano, An overview of the first decade of PollyNET: an emerging network of automated Raman-polarization lidars for continuous aerosol profiling, Atmospheric Chemistry and Physics, 16, 5111–5137, 2016, www.atmos-chem-phys.net/16/5111/2016/, doi:10.5194/acp-16-5111-2016

 

Kleynhans, E.L.J., Neizel, B.W., Beukes, J.P., Van Zyl, P.G., Utilisation of pre-oxidised ore in the pelletised chromite pre-reduction process, Minerals Engineering 92 (2016) 114–124, http://dx.doi.org/10.1016/j.mineng.2016.03.005

 

Butt, E.W., Rap, A., Schmidt, A., Scott, C.E., Pringle, K.J., Reddington, C.L., Richards, N.A.D., et al., Woodhouse, M.T., Ramirez-Villegas, J., Yang, H., Vakkari, V., Stone, E.A., Rupakheti, M., Praveen, P.S., Van Zyl, P.G., Beukes, J.P., Josipovic, M., Mitchell, E.J.S., Sallu, S.M., Forster, P.M. and D. V. Spracklen, The impact of residential combustion emissions on atmospheric aerosol, human health, and climate, Atmospheric Chemistry and Physics, 16, 873–905, 2016, www.atmos-chem-phys.net/16/873/2016/ doi:10.5194/acp-16-873-2016

 

Aurela, M., Beukes, J.P., Van Zyl, P.G., Vakkari, V., Teinilä, K., Saarikoski, S. and Laakso, L., The composition of ambient and fresh biomass burning aerosols at a savannah site, South Africa. S Afr J Sci. 2016;112(5/6), Art. #2015-0223, 8 pages. http://dx.doi.org/10.17159/ sajs.2016/20150223

 

Lourens, A.S.M., Butler, T.M., Beukes, J.P., Van Zyl, P.G., Fourie, G.D. and Lawrence, M.G., Investigating atmospheric photochemistry in the Johannesburg-Pretoria megacity using a box model, South African Journal of Science, 2016;112(1/2), Art. #2015-0169, 11 pages. http://dx.doi.org/10.17159/ sajs.2016/2015-0169

 

Vakkari, V., Tiitta, P., Jaars, K., Croteau, P., Beukes, J.P., Josipovic, M., Kerminen, V-M., Kulmala, et al., M., Venter, A.D., Van Zyl, P.G., Worsnop, D.R. and Lauri Laakso, Reevaluating the contribution of sulfuric acid and the origin of organic compounds in atmospheric nanoparticle growth, Geophysical Research Letters, 42, 10,486–10,493, 2015, doi:10.1002/2015GL066459

 

Venter, A.D., Beukes, J.P., Van Zyl, P.G., Brunke, E.-G., Labuschagne, C., Slemr, F., Ebinghaus, R. and Kock, H., Statistical exploration of gaseous elemental mercury (GEM) measured at Cape Point from 2007 to 2011, Atmospheric Chemistry and Physics, 15, 10271–10280, 2015 www.atmos-chem-phys.net/15/10271/2015/ doi:10.5194/acp-15-10271-2015

 

Loock-Hatting, M.M., Beukes, J.P., Van Zyl, P.G. and Tiedt, L.R., Cr(VI) and Conductivity as Indicators of Surface Water Pollution from Ferrochrome Production in South Africa: Four Case Studies, Metallurgical and Materials Transactions B, 2015, VOLUME 46B, OCTOBER 2015, 2315-2325, DOI: 10.1007/s11663-015-0395-x

 

Kuik, F., Lauer, A., Beukes, J.P., Van Zyl, P.G., Josipovic, M., Vakkari, V., Laakso, L. and Feig, G.T., The anthropogenic contribution to atmospheric black carbon concentrations in southern Africa: a WRF-Chem modeling study, Atmospheric Chemistry and Physics, 15, 8809–8830, 2015 www.atmos-chem-phys.net/15/8809/2015/ doi:10.5194/acp-15-8809-2015

 

Sundström, A.-M., Nikandrova, A., Atlaskina, K., Nieminen, T., Vakkari, V., Laakso, L., Beukes, J.P., Arola, A., et al., P. G. van Zyl, M. Josipovic, A. D. Venter, K. Jaars, J. J. Pienaar, S. Piketh, A. Wiedensohler, E. K. Chiloane, G. de Leeuw, and M. Kulmala, Characterization of satellite-based proxies for estimating nucleation mode particles over South Africa, Atmospheric Chemistry and Physics., 15, 4983–4996, 2015, www.atmos-chem-phys.net/15/4983/2015/ doi:10.5194/acp-15-4983-2015

 

Giannakaki, E., Pfüller, A., Korhonen, K., Mielonen, T., Laakso, L., Vakkari, L., Baars, H., Engelmann, R., et al., J. P. Beukes, P. G. Van Zyl, M. Josipovic, P. Tiitta, K. Chiloane, S. Piketh, H. Lihavainen, K. E. J. Lehtinen and M. Komppula, One year of Raman lidar observations of free-tropospheric aerosol layers over South Africa, Atmospheric Chemistry and Physics, 15, 5429–5442, 2015 www.atmos-chem-phys.net/15/5429/2015/doi:10.5194/acp-15-5429-2015

 

Booyens, W., Van Zyl, P.G., Beukes, J.P., Ruiz-Jimenez, J., Kopperi, M., Riekkola, M.-L., Josipovic, M., Venter, A.D., et al., Jaars, K., Laakso, L., Vakkari, V., Kulmala, M. and Pienaar, J.J. Size-resolved characterisation of organic compounds in atmospheric aerosols collected at Welgegund, South Africa, Journal of Atmospheric Chemistry, 2015, 72:43–64, DOI 10.1007/s10874-015-9304-6

 

Du Prees, S.P., Beukes, J.P., and Van Zyl, P.G., Cr(VI) generation during flaring of CO-rich off-gas from closed ferrochromium submerged arc furnaces, Metallurgical and Materials Transactions B, 2015, VOLUME 46B, APRIL 2015, 1002-1010, DOI: 10.1007/s11663-014-0244-3

 

Glastonbury, R.I., Beukes, J.P., Van Zyl, P.G., Sadiki, L.N., Jordaan, A., Campbell, Q.P., Stewart, H.M. and Dawson, N.F., Comparison of physical properties of oxidative sintered pellets produced with UG2 or metallurgicalgrade South African chromite: a case study, The Journal of The Southern African Institute of Mining and Metallurgy, Volume 115, August 2015, 699-706, http://dx.doi.org/10.17159/2411-9717/2015/v115n8a6

 

Loock, M.M., Beukes, J.P. and Van Zyl, P.G., Conductivity as an indicator of surface water quality in the proximity of ferrochrome smelters in South Africa, Water SA, Vol. 41 No. 5, October 2015, 705-711, ISSN 1816-7950, http://dx.doi.org/10.4314/wsa.v41i5.14

 

Venter, A.D., Jaars, K., Booyens, W., Beukes, J.P., Van Zyl, P.G., Josipovic, M., Hendriks, J., Vakkari, V., et al., H. Hellén, H. Hakola, H. Aaltonen, J. Ruiz-Jimenez, M-L. Riekkola and L. Laakso, Plume Characterization of a Typical South African Braai, South African Journal of Chemistry, 2015, 68, 181–194, ISSN 0379-4350 / http://saci.co.za/journal, DOI: http://dx.doi.org/10.17159/0379-4350/2015/v68a25

 

J. Backman, A. Virkkula, V. Vakkari, J. P. Beukes, P. G. Van Zyl, M. Josipovic, S. Piketh, P. Tiitta, K. Chiloane, T. Petäjä, M. Kulmala, and L. Laakso, Differences in aerosol absorption Ångström exponents between correction algorithms for a particle soot absorption photometer measured on the South African Highveld, Atmospheric Measurement Techniques., 7, 4285–4298, 2014 www.atmos-meas-tech.net/7/4285/2014/ doi:10.5194/amt-7-4285-2014

 

K. Tsigaridis, N. Daskalakis, M. Kanakidou, P. J. Adams, P. Artaxo, R. Bahadur, Y. Balkanski, S. E. Bauer, N. Bellouin, A. Benedetti, T. Bergman, T. K. Berntsen, J. P. Beukes, H. Bian, K. S. Carslaw, M. Chin, G. Curci, T. Diehl, R. C. Easter, S. J. Ghan, S. L. Gong, A. Hodzic, C. R. Hoyle, T. Iversen, S. Jathar, J. L. Jimenez, J. W. Kaiser, A. Kirkevåg, D. Koch, H. Kokkola, Y. H Lee, G. Lin, X. Liu, G. Luo, X. Ma, G. W. Mann, N. Mihalopoulos, J.-J. Morcrette, J.-F. Müller, G. Myhre, S. Myriokefalitakis, N. L. Ng, D. O’Donnell, J. E. Penner, L. Pozzoli, K. J. Pringle, L. M. Russell, M. Schulz, J. Sciare, Ø. Seland, D. T. Shindell, S. Sillman, R. B. Skeie, D. Spracklen, T. Stavrakou, S. D. Steenrod, T. Takemura, P. Tiitta, S. Tilmes, H. Tost, T. van Noije, P. G. van Zyl, K. von Salzen, F. Yu, Z.Wang, Z.Wang, R. A. Zaveri, H. Zhang, K. Zhang, Q. Zhang, and X. Zhang, The AeroCom evaluation and intercomparison of organic aerosol in global models, Atmospheric Chemistry and Physics, 14, 10845–10895, 2014 www.atmos-chem-phys.net/14/10845/2014/ doi:10.5194/acp-14-10845-2014

 

Jaars, K., Beukes, J.P., Van Zyl, P.G., Venter, A.D., Josipovic, M., Pienaar, J.J., Vakkari, V., Aaltonen, H., Laakso, H., Kulmala, M., Tiitta, P., Guenther, A., Hellén, H., Laakso L. and Hakola, H.,  Ambient aromatic hydrocarbon measurements at Welgegund, South Africa,  Atmospheric Chemistry and Physics, 14, 7075–7089, 2014 www.atmos-chem-phys.net/14/7075/2014/ doi:10.5194/acp-14-7075-2014

 

K. Korhonen, E. Giannakaki, T. Mielonen, A. Pfüller, L. Laakso, V. Vakkari, H. Baars, R. Engelmann, J.P. Beukes, P. G. Van Zyl, A. Ramandh, L. Ntsangwane, M. Josipovic, P. Tiitta, G. Fourie, I. Ngwana,K. Chiloane and M. Komppula, Atmospheric boundary layer top height in South Africa: measurements with lidar and radiosonde compared to three atmospheric models, Atmospheric Chemistry and Physics, 14, 4263–4278, 2014 www.atmos-chem-phys.net/14/4263/2014/ doi:10.5194/acp-14-4263-2014.

 

Vakkari, V., Kerminen, V.-M., Beukes, J.P., Tiitta, P., Van Zyl, P.G., Josipovic, M., Venter, A.D., Jaars, K., Worsnop, D.R., Kulmala, M., Laakso, L., Rapid changes in biomass burning aerosols by atmospheric oxidation, Geophysical Research Letters, 41, 2644–2651, doi:10.1002/2014GL059396, 2014.

 

P. Tiitta, V. Vakkari, P. Croteau, J. P. Beukes, P. G. van Zyl, M. Josipovic, A. D. Venter, K. Jaars, J. J. Pienaar, N. L. Ng, M. R. Canagaratna, J. T. Jayne, V.-M. Kerminen, H. Kokkola, M. Kulmala, A. Laaksonen, D. R. Worsnop and L. Laakso, Chemical composition, main sources and temporal variability of PM1 aerosols in southern African grassland, Atmospheric Chemistry and Physics, 14, 1909–1927, 2014, www.atmos-chem-phys.net/14/1909/2014/doi:10.5194/acp-14-1909-2014.

 

Y. van Staden, J.P. Beukes, P.G. van Zyl, J.S. du Toit, N.F. Dawson, Characterisation and liberation of chromium from fine ferrochromewaste materials, Minerals Engineering 56 (2014) 112–120.

 

Loock, M.M., Beukes, J.P. and Van Zyl, P.G., A survey of Cr(VI) contamination of surface water in the proximity of ferrochromium smelters in South Africa, Water SA Vol. 40 No. 4 October 2014, ISSN 0378-4738 (Print), ISSN 1816-7950 (On-line) http://dx.doi.org/10.4314/wsa.v40i4.16 Available on website http://www.wrc.org.za

 

Gierens RT, Laakso L, Mogensen D, Vakkari V, Beukes JP, Van Zyl PG, Hakola H, Guenther A, Pienaar JJ and Boy M, Modelling new particle formation events in the South African savannah, South African Journal of Science, 2014; 110(5/6), Art. #2013-0108, 12 pages. http://dx.doi.org/10.1590/ sajs.2014/20130108

 

Van Zyl P.G., Beukes J.P., Du Toit G., Mabaso D., Hendriks J., Vakkari V., Tiitta P., Pienaar J.J., Kulmala M and Laakso L, Assessment of atmospheric trace metals in the western Bushveld Igneous Complex, South Africa. South African Journal of Science, 2014; 110(3/4), Art. #2013-0280, 11 pages. http://dx.doi.org/10.1590/ sajs.2014/20130280.

J.P. Beukes, H. Roos, L. Shoko, P.G. van Zyl, H.W.J.P. Neomagus, C.A. Strydom, N.F. Dawson, The use of thermomechanical analysis to characterise Söderberg electrode paste raw materials, Minerals Engineering, 46-47 (2013) 167–176.

 

B.W. Neizel, J.P. Beukes, P.G. van Zyl and N.F. Dawson , Why is CaCO3 not used as an additive in the pelletised chromite pre-reduction process?, Minerals Engineering, 45, (2013) 115–120.

 

A.-P. Hyvärinen, V. Vakkari, L. Laakso, R.K. Hooda, V.P. Sharma, T.S. Panwar, J.P. Beukes, P.G. van Zyl, M. Josipovic, R.M. Garland, M.O. Andreae, U. Pöschl and A. Petzold, Correction for a measurement artifact of the Multi-Angle Absorption Photometer (MAAP) at high black carbon mass concentration levels, Atmospheric Measurements Techniques, 6, 81-90, 2013. doi:10.5194/amt-6-81-2013

 

ELJ Kleynhans, JP Beukes, PG van Zyl, PHI Kestens, JM Langa, Unique challenges of clay binders in a pelletised chromite pre-reduction process, Minerals Engineering, 34, (2012), 55-62.

 

Laakso, L., Vakkari, V., Virkkula, A., Laakso, H., Backman, J., Kulmala, M., Beukes, J. P., van Zyl, P. G., Tiitta, P., Josipovic, M., Pienaar, J. J., Chiloane, K., Gilardoni, S., Vignati, E., Wiedensohler, A., Tuch, T., Birmili, W., Piketh, S., Collett, K., Fourie, G. D., Komppula, M., Lihavainen, H., de Leeuw, G., and Kerminen, V.-M.: South African EUCAARI measurements: seasonal variation of trace gases and aerosol optical properties, Atmospheric Chemistry and Physics, 12, 1847-1864, doi:10.5194/acp-12-1847-2012, 2012.

 

Lourens, A.S.M, Butler, T.M., Beukes, J.P., Van Zyl, P.G., Beirle, S., Wagner, T., Heue, K.-P., Pienaar, J.J., Fourie, G.D., Lawrence, M.G., Re-evaluating the NO2 hotspot over the South African Highveld, South African Journal of Science, 108(9/10), Art. #1146, 6 pages. doi: 10.4102/sajs. v108i11/12.1146, 2012.

 

Venter, A.D., Vakkari, V., Beukes, J.P., Van Zyl, P.G., Laakso, H., Mabaso, D., Tiitta, P., Josipovic, M., Kulmala, M., Pienaar, J.J., Laakso, L., An air quality assessment in the industrialised western Bushveld Igneous Complex, South Africa, South African Journal of Science, 108(9/10), Art. #1059, 10 pages. doi: 10.4102/sajs. v108i9/10.1059, 2012.

 

W van der Merwe, JP Beukes and PG van Zyl, Cr(VI) formation during ozonation of Cr-containing materials in aqueous suspension – implications for water treatment, Water SA, 38 No.4, July 2012.

 

JP Beukes, PG van Zyl and M Ras, Treatment of Cr(VI)-containing wastes in the South African ferrochrome industry – a review of currently applied methods, The Journal of The Southen African Institute of Mining and Metallurgy, 112, May 2012, 413-418.

 

Lourens, A.S.M., Beukes, J.P., Van Zyl, P.G., Fourie, G.D. Burger, J.W., Pienaar, J.J., Read, C.E., Jordaan, J.H.L., Spatial and Temporal assessment of Gaseous Pollutants in the Mpumalanga Highveld of South Africa, South African Journal of Science, S Afr J Sci. 2011; 107(1/2), Art. #269, 8 pages. DOI: 10.4102/sajs.v107i1/2.269.

 

M. Kulmala, A. Asmi, H. K. Lappalainen, U. Baltensperger, J.-L. Brenguier, M. C. Facchini, H.-C. Hansson, Ø. Hov, C. D. O’Dowd, U. P¨oschl, A. Wiedensohler, R. Boers, O. Boucher, G. de Leeuw, H. Denier van den Gon, J. Feichter, R. Krejci, P. Laj, H. Lihavainen, U. Lohmann, G. McFiggans, T. Mentel, C. Pilinis, I. Riipinen, M. Schulz, A. Stohl, E. Swietlicki,E. Vignati, M. Amann, M. Ammann, C. Alves, S. Arabas, P. Artaxo,D. C. S. Beddows, R. Bergström, J. P. Beukes, M. Bilde, J. F. Burkhart,F. Canonaco, S. Clegg, H. Coe, S. Crumeyrolle, B. D’Anna, S. Decesari,S. Gilardoni, M. Fischer, A. M. Fjæraa, C. Fountoukis, C. George, L. Gomes, P. Halloran, T. Hamburger, R. M. Harrison, H. Herrmann,T. Hoffmann, C. Hoose, M. Hu, U. H˜ orrak, Y. Iinuma, T. Iversen, M. Josipovic, M. Kanakidou, A. Kiendler-Scharr, A. Kirkev°a,g, G. Kiss,Z. Klimont, P. Kolmonen, M. Komppula, J.-E. Kristjansson, L. Laakso,A. Laaksonen, L. Labonnote, V. Lanz, K. E. J. Lehtinen, R. Makkonen,G. McMeeking, J. Merikanto, A. Minikin, S. Mirme, W. T. Morgan,E. Nemitz, D. O’Donnell, T. S. Panwar, H. Pawlowska, A Petzold, J. J. Pienaar, C. Pio, C. Plass-Duelmer, A. S. H. Pr´evˆ ot, S. Pryor,C. L. Reddington, G. Roberts, D. Rosenfeld, J. Schwarz, Ø. Seland,K. Sellegri, X. J. Shen, H. Siebert, B. Sierau, D. Simpson, J. Y. Sun,D. Topping, P. Tunved, P. Vaattovaara, V. Vakkari, J. P. Veefkind,A. Visschedijk, H. Vuollekoski, R. Vuolo, B. Wehner, J. Wildt, S. Woodward,D. R. Worsnop, G.-J. van Zadelhoff, A. A. Zardini, K. Zhang, P. G. van Zyl, V.-M. Kerminen, K. S Carslaw, S. N. Pandis; General overview: European Integratedproject on Aerosol Cloud Climate and Air Quality interactions (EUCAARI) – integrating aerosol research from nano toglobal scales, Atmospheric Chemistry and Physics, 11, 13061-13143, 2011, www.atmos-chem-phys.net/11/13061/2011/, doi:10.5194/acp-11-13061-2011.

 

JP Beukes, NF Dawson and PG van Zyl, Theoretical and practical aspects of Cr(VI) in the South African ferrochrome industry, The Journal of The Southern African Institute of Mining and Metallurgy, Vol 110, December 2010.

 

RI Glastonbury, W van der Merwe, JP Beukes, PG van Zyl, G Lachmann, CJH Steenkamp, NF Dawson and HM Stewart, Cr(VI) generation during sample preparation of solid samples - A chromite ore case study, Water SA, 36(1), 2010, 105-109.

 

Nothnagel, C, Kotte, K., Pienaar, J.J., Van Zyl, P.G. and Beukes, J.P., Determination of disinfection by-products and extractable organic compounds in South African tap water, The Journal for Transdisciplinary Research in Southern Africa, Vol 4 no. 1, July 2008, pp. 175-180

van Zyl, P.G., Breet, E.L.J. and Williams, C.S., Recovery of KAu(CN)2 from granular activated carbon using supercritical CO2, The Journal of Supercritical Fluids 47 (2008) 31-36

Dr Sheldon Strydom

Mahomed M, Clulow AD, Strydom S, Savage MJ and Mabhaudhi T. Assessment of a ground-based lightning

detection and near real-time warning system in the rural community of Swayimane, KwaZulu-Natal,

 

South Africa. Weather, Climate, and Society. https://doi.org/10.1175/WCAS-D-20-0116.1.

Mahomed M, Clulow AD, Strydom S, Savage MJ and Mabhaudhi T (2020): Lighting monitoring and detection

techniques: Progress and challenges in South Africa. South African Journal of Science.

https://doi.org/10.17159/sajs.2021/7020.

 

Strydom S, Jewitt GPW, Savage MJ, and Clulow AD (2020): Long-term trends and variability in the

microclimates of the uMngeni Catchment, KwaZulu-Natal, South Africa and potential impacts on water

resources. Theoretical and Applied Climatology. https://doi.org/10.1007/s00704-020-03127-1.

 

Strydom, S. Savage, M.J. and Clulow, A.D. (2019): Long-term trends and variability in the dryland microclimate

of the Northern Cape Province, South Africa. Theoretical and Applied Climatology. DOI:

10.1007/s00704-018-2642-y.

 

Clulow A.D., Strydom S., Savage M.J., Grant B., and Everson C.S. (2018): Integration of a ground-based

lightning warning system into mining operations in the Democratic Republic of the Congo. Weather,Climate and Society. DOI: 10.1175/WCAS-D-18-0004.1.

 

Strydom S. and Savage M.J (2018): Spatio-temporal variations of fires in the Southern Africa Development

Community. Natural Hazards, DOI: 10.1007/s11069-018-3268-1.

 

Strydom S. and Savage M.J. (2017): Potential impacts of climate change on wildfire dynamics in the midlands

of KwaZulu-Natal, South Africa. Climatic Change, DOI: 10.1007/s10584-017-2019-8.

 

Strydom S. and Savage M.J. (2017): Observed variability and trends in the microclimate of the midlands of

KwaZulu-Natal and its influence on fire danger. International Journal of Climatology, DOI:

10.1002/joc.5207.

 

Strydom S. and Savage M.J. (2017): The influence of climate change on fire activity in South Africa. The Conversation. February, 2017. https://theconversation.com/the-influence-of-climate-change-on-fire-

activity-in-south-africa-71349.

 

Strydom S. and Savage M.J. (2016): A spatio-temporal analysis of fires in South Africa. South African Journal

of Science, 112(11/12). http://dx.doi.org/10.17159/sajs.2016/20150489.

 

Strydom S. and Savage M.J. (2013): A near real-time fire danger index measurement system. 29th Annual

Conference of the South African Society for Atmospheric Sciences, Durban, South Africa, 26-27

September, 2013.

Dr Adeline Ngie

Ngie, A., 2020: Estimation of maize nitrate concentrations using EO-1 data and a non-linear regression model, Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-3/W11, 109–116, https://doi.org/10.5194/isprs-archives-XLII-3-W11-109-2020.

Ngie, A., 2020: Thermal remote sensing of urban climates in South Africa through the mono-window algorithm, Int. Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-3/W11, 117–123, https://doi.org/10.5194/isprs-archives-XLII-3-W11-117-2020.

Ngie, A. and F. Ahmed 2017: Estimation of maize grain yield using multispectral satellite data sets (SPOT 5) and the random forest algorithm. South Africa Journal of Geomatics 7(1), 11-30

Ngie, A., F. Ahmed and S. Tesfamichael, 2017: Monitoring the impacts of El niño on the extent of cultivated fields using SAR data around the agricultural region of the Free State, South Africa. International Arch. Photogramm. Remote Sens. Spatial Inf. Sci., XLII-3/W2, 151-155, https://doi.org/10.5194/isprs-archives-XLII-3-W2-151-2017

Ngie, A., F. Ahmed and K. Abutaleb, 2016: Assessing maize foliar water stress levels under field conditions using in-situ spectroscopy. Rwanda Journal, Series D, Volume 1, 2016, Life and Natural Sciences: Special issue II. http://dx.doi.org/10.4314/rj.v1i2S.1D

Ngie, A., K. Abutaleb, F. Ahmed, O. J Taiwo, A. Darwish and M. Ahmed, 2016: An estimation of land surface temperature from Landsat ETM+ images for Durban, South Africa. Rwanda Journal, Series D, Volume 1, 2016, Life and Natural Sciences: Special issue II. http://dx.doi.org/10.4314/rj.v1i2S.1D

Abutaleb, K., A. Ngie, A. Darwish, M. Ahmed, S. Arafat and F. Ahmed, 2015: Assessment of Urban Heat Island using remotely sensed imagery over Greater Cairo, Egypt. Advances in Remote Sensing 4, 35-47.

Ngie, A., F. Ahmed and K. Abutaleb, 2014: Remote sensing potential for investigation of maize production: review of literature. South Africa Journal of Geomatics 3(2), 163-184.

Ngie, A., K. Abutaleb, F. Ahmed, A. Darwish and M. Ahmed, 2014: Assessment of Urban Heat Island using remotely sensed imagery:  A Review. South African Geographical Journal http://dx.doi.org/10.1080/03736245.2014.924864

Ms Nkosi Ncobile

Ncobile C Nkosi, Roelof P Burger, Newton R Matandirotya, Christiaan Pauwand Stuart J

Piketh, 2021 Solid fuel use in electrified low-income residential areas on the Mpumalanga

Highveld: the case of KwaDela, Journal of Energy in Southern Africa. Article Track umber A-

8086

 

Nkosi, N.C., Piketh, S.J., Burger, R.P., 2018. Fine particulate matter from domestic burning of

solid fuels in South African townships: The Clean Air Journal, 28 (1); pp.35-41 2019

 

 

  1. Peer Reviewed Conference Papers

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  1. Research Reports

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