13 publication(s) trouvée(s)
Article scientifique
Remote biomass burning dominates southern West African air pollution during the monsoon
Abstract. Vast stretches of agricultural land in southern and central Africa are burnt between June and September each year, which …
Article scientifique
Complex refractive indices and single-scattering albedo of global dust aerosols in the shortwave spectrum and relationship to size and iron content
Abstract. The optical properties of airborne mineral dust depend on its mineralogy, size distribution, and shape, and they might vary …
Article scientifique
Three years of measurements of light-absorbing aerosols over coastal Namibia: seasonality, origin, and transport
Abstract. Continuous measurements between July 2012 and December 2015 at the Henties Bay Aerosol Observatory (HBAO; 22∘ S, 14∘05′ E), …
Article scientifique
Observation- and model-based estimates of particulate dry nitrogen deposition to the oceans
Abstract. Anthropogenic nitrogen (N) emissions to the atmosphere have increased significantly the deposition of nitrate (NO3−) and ammonium (NH4+) to …
Article scientifique
Seasonal cycle of desert aerosols in western Africa: analysis of the coastal transition with passive and active sensors
Abstract. The impact of desert aerosols on climate, atmospheric processes, and the environment is still debated in the scientific community. …
Article scientifique
Spectral- and size-resolved mass absorption efficiency of mineral dust aerosols in the shortwave spectrum: a simulation chamber study
Abstract. This paper presents new laboratory measurements of the mass absorption efficiency (MAE) between 375 and 850 nm for 12 …
Article scientifique
Spatial, temporal and source contribution assessments of black carbon over the northern interior of South Africa
Abstract. After carbon dioxide (CO2), aerosol black carbon (BC) is considered to be the second most important contributor to global …
Article scientifique
Four years (2011–2015) of total gaseous mercury measurements from the Cape Verde Atmospheric Observatory
Abstract. Mercury is a chemical with widespread anthropogenic emissions that is known to be highly toxic to humans, ecosystems and …
Article scientifique
Multi-model study of mercury dispersion in the atmosphere: atmospheric processes and model evaluation
Abstract. Current understanding of mercury (Hg) behavior in the atmosphere contains significant gaps. Some key characteristics of Hg processes, including …
Article scientifique
Atmospheric trace metals measured at a regional background site (Welgegund) in South Africa
Abstract. Atmospheric trace metals can cause a variety of health-related and environmental problems. Only a few studies on atmospheric trace …
Article scientifique
Terpenoid and carbonyl emissions from Norway spruce in Finland during the growing season
Abstract. We present spring and summer volatile organic compound (VOC) emission rate measurements from Norway spruce (Picea abies L. Karst) …
Article scientifique
Trend of atmospheric mercury concentrations at Cape Point for 1995–2004 and since 2007
Abstract. Long-term measurements of gaseous elemental mercury (GEM) concentrations at Cape Point, South Africa, reveal a downward trend between September …
Article scientifique
Global scale variability of the mineral dust long-wave refractive index: a new dataset of in situ measurements for climate modeling and remote sensing
Abstract. Modeling the interaction of dust with long-wave (LW) radiation is still a challenge because of the scarcity of information …