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Oceanic phytoplankton, atmospheric sulphur, cloud albedo and climate
The major source of cloud-condensation nuclei (CCN) over the oceans appears to be dimethylsulphide, which is produced by planktonic algae in sea water and oxidizes in the atmosphere to form a
Smoking Rain Clouds over the Amazon
Heavy smoke from forest fires in the Amazon was observed to reduce cloud droplet size and so delay the onset of precipitation, which affects the water cycle, the pollution burden of the atmosphere, and the dynamics of atmospheric circulation.
Black carbon or brown carbon? The nature of light-absorbing carbonaceous aerosols
Although the definition and measurement techniques for atmospheric "black carbon" ("BC") or "elemental carbon'' ("EC") have long been subjects of scientific controversy, the recent discovery of
Biomass Burning in the Tropics: Impact on Atmospheric Chemistry and Biogeochemical Cycles
Widespread burning of biomass serves to clear land for shifting cultivation, to convert forests to agricultural and pastoral lands, and to remove dry vegetation in order to promote agricultural productivity and the growth of higher yield grasses, but it may also disturb biogeochemical cycles, especially that of nitrogen.
Biomass burning emissions estimated with a global fire assimilation system based on observed fire radiative power
Abstract. The Global Fire Assimilation System (GFASv1.0) calculates biomass burning emissions by assimilating Fire Radiative Power (FRP) observations from the MODIS instruments onboard the Terra and
Primary biological aerosol particles in the atmosphere: a review
Abstract Atmospheric aerosol particles of biological origin are a very diverse group of biological materials and structures, including microorganisms, dispersal units, fragments and excretions of
Formation of Secondary Organic Aerosols Through Photooxidation of Isoprene
Detailed organic analysis of natural aerosols from the Amazonian rain forest showed considerable quantities of previously unobserved polar organic compounds, which were identified as a mixture of two diastereoisomeric 2-methyltetrols: 2-methylthreitol and 2- methylerythritol, which can be explained by OH radical–initiated photooxidation of isoprene.
Atmospheric aerosols: Biogeochemical sources and role in atmospheric chemistry
Atmospheric aerosols play important roles in climate and atmospheric chemistry: They scatter sunlight, provide condensation nuclei for cloud droplets, and participate in heterogeneous chemical