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Rapid changes in biomass burning aerosols by atmospheric oxidation
(Wiley, 2014)
Primary and secondary aerosol particles originating from biomass burning contribute significantly
to the atmospheric aerosol budget and thereby to both direct and indirect radiative forcing. Based on detailed
measurements ...
An air quality assessment in the industrialised western Bushveld Igneous Complex, South Africa
(ASSAf, 2012)
South Africa has the largest industrialised economy in Africa, with significant mining and
metallurgical activities. A large fraction of the South African mineral assets is concentrated in
the Bushveld Igneous Complex ...
A comparison of surface NO2 mixing ratios and total column observations at a South African site
(SASAS, 2014)
The total column density nitrogen dioxide (NO2) retrievals collated by a ground-based
sun-tracking spectrometer (Pandora/GSFC) and the satellite-borne (Aura) Ozone
Monitoring Instrument (OMI) were compared to the volume ...
Reevaluating the contribution of sulfuric acid and the origin of organic compounds in atmospheric nanoparticle growth
(Wiley, 2015)
Aerosol particles formed in the atmosphere are important to the Earth's climate system due to their ability to affect cloud properties. At present, little is known about the atmospheric chemistry responsible for the growth ...
Measurements of biogenic volatile organic compounds at a grazed savannah grassland agricultural landscape in South Africa
(EGU, 2016)
Biogenic volatile organic compounds (BVOCs) play an important role in the chemistry of the troposphere, especially in the formation of tropospheric ozone (O3) and secondary organic aerosols (SOA). Ecosystems produce and ...
Atmospheric trace metals measured at a regional background site (Welgegund) in South Africa
(EGU, 2017)
Atmospheric trace metals can cause a variety of health-related and environmental problems. Only a few studies on atmospheric trace metal concentrations have been conducted in South Africa. Therefore the aim of this study ...
Size-resolved characteristics of inorganic ionic species in atmospheric aerosols at a regional background site on the South African Highveld
(Springer, 2018)
Aerosols consist of organic and inorganic species, and the composition and concentration of these species depends on their sources, chemical transformation and sinks. In this study an assessment of major inorganic ions ...
Carbon balance of a grazed savanna grassland ecosystem in South Africa
(EGU, 2017)
Tropical savannas and grasslands are estimated to contribute significantly to the total primary production of all terrestrial vegetation. Large parts of African savannas and grasslands are used for agriculture and cattle ...
Size-resolved characterisation of organic compounds in atmospheric aerosols collected at Welgegund, South Africa
(Springer, 2015)
The organic fraction of atmospheric aerosols is 20 to 90 % of which only a small percentage has been chemically characterised. Two-dimensional gas chromatography with a time-of-flight mass spectrometer (GCxGC-TOFMS) is a ...