Browsing by Author "Jaars, K."

Ambient aromatic hydrocarbon measurements at Welgegund, South Africa

Jaars, K.; Beukes, J.P.; Van Zyl, P.G.; Venter, A.D.; Josipovic, M.; Pienaar, J.J.; Tiitta, P.; Laakso, L. (EGU, 2014)

Aromatic hydrocarbons are associated with direct adverse human health effects and can have negative impacts on ecosystems due to their toxicity, as well as indirect negative effects through the formation of tropospheric ...

Characterization of satellite-based proxies for estimating nucleation mode particles over South Africa

Sundström, A.-M.; Laakso, L.; Beukes, J.P.; Van Zyl, P.G.; Josipovic, M.; Venter, A.D.; Jaars, K.; Pienaar, J.J.; Piketh, S.; Chiloane, E.K. (EGU, 2015)

Proxies for estimating nucleation mode number concentrations and further simplification for their use with satellite data have been presented in Kulmala et al. (2011). In this paper we discuss the underlying assumptions ...

Chemical composition, main sources and temporal variability of PM1 aerosols in southern African grassland

Tiitta, P.; Beukes, J.P.; Van Zyl, P.G.; Josipovic, M.; Venter, A.D.; Jaars, K.; Pienaar, J.J.; Laakso, L. (EGU, 2014)

Southern Africa is a significant source region of atmospheric pollution, yet long-term data on pollutant concentrations and properties from this region are rather limited. A recently established atmospheric measurement ...

Estimating the concentration of nucleation mode aerosol particles over South Africa using satellite remote sensing measurements

Sundström, A.-M.; Laakso, L.; Beukes, J.P.; Van Zyl, P.G.; Josipovic, M.; Venter, A.D.; Jaars, K.; Pienaar, J.J.; Piketh, S.; Chiloane, E.K. (AIP Publishing, 2013)

In this work satellite based observations were used to estimate the concentration of nucleation mode aerosols over South Africa. The nucleation mode aerosols can not be detected directly with satellite instruments since ...

Plume characterization of a typical South African braai

Venter, A.D.; Jaars, K.; Booyens, W.; Beukes, J.P.; Van Zyl, P.G.; Josipovic, M.; Hendriks, J.; Laakso, L. (SACI, 2015)

To braai is part of the South African heritage that transcends ethnic barriers and socio-economic groups. In this paper, a comprehensive analysis of atmospheric gaseous and aerosol species within a plume originating from ...