Atmospheric aerosols: Biogeochemical sources and role in atmospheric chemistry

  title={Atmospheric aerosols: Biogeochemical sources and role in atmospheric chemistry},
  author={Meinrat O. Andreae and Paul J. Crutzen},
Atmospheric aerosols play important roles in climate and atmospheric chemistry: They scatter sunlight, provide condensation nuclei for cloud droplets, and participate in heterogeneous chemical reactions. Two important aerosol species, sulfate and organic particles, have large natural biogenic sources that depend in a highly complex fashion on environmental and ecological parameters and therefore are prone to influence by global change. Reactions in and on sea-salt aerosol particles may have a… 
Organic Aerosols: Origin, Composition and Influence on Tropospheric Processes
Atmospheric aerosols scatter sunlight, serve as condensation nuclei for cloud droplet formation and participate in heterogeneous chemical reactions. Hence, they play an important role in global
Sea Salt Aerosol Production: Mechanisms, Methods, Measurements, and Models - A Critical Review
Sea salt aerosol (SSA) exerts a major influence over a broad reach of geophysics. It is important to the physics and chemistry of the marine atmosphere and to marine geochemistry and biogeochemistry
Aerosols, Climate, and the Hydrological Cycle
Human activities are releasing tiny particles (aerosols) into the atmosphere that enhance scattering and absorption of solar radiation, which can lead to a weaker hydrological cycle, which connects directly to availability and quality of fresh water, a major environmental issue of the 21st century.
Atmospheric chemistry in the coastal ocean: A synopsis of processing, scavenging and inputs
The coastal atmosphere provides a complicated chemical environment that can have global implications for climate. For example, the continents transport an array of gases and aerosols, both natural
Atmospheric Ice Nucleation by Glassy Organic Compounds : A Review
Aerosol particles play a vital role in atmospheric processes and the climate as they facilitate the formation of clouds and precipitation. Secondary organic aerosols (SOA) represent a significant
Airborne minerals and related aerosol particles: effects on climate and the environment.
  • P. Buseck, M. Pósfai
  • Environmental Science
    Proceedings of the National Academy of Sciences of the United States of America
  • 1999
Sulfate particles are the main cooling agents among aerosols; it is found that in the remote oceanic atmosphere a significant fraction is aggregated with soot, a material that can diminish the cooling effect of sulfate.
Interactions between Tropospheric Chemistry and Aerosols in a Unified GCM Simulation
Anthropogenic changes in the atmospheric abundances of tropospheric ozone and aerosols make significant contributions to climate change. In turn, climate change affects the abundances of ozone and
Climate impacts of atmospheric low volatility organic compounds
There exist huge gaps in the knowledge of how cloud-aerosol interaction affects climate. Consequently global models estimating the radiative forcing by anthropogenic aerosols show considerable
Atmospheric aerosols: composition, transformation, climate and health effects.
  • U. Pöschl
  • Environmental Science
    Angewandte Chemie
  • 2005
The current state of knowledge, major open questions, and research perspectives on the properties and interactions of atmospheric aerosols and their effects on climate and human health are outlined.


Biogenic sulfur emissions and aerosols over the tropical South Atlantic: 3. Atmospheric dimethylsulfide, aerosols and cloud condensation nuclei
We measured dimethylsulfide in air (DMSa) and the number concentration, size distribution, and chemical composition of atmospheric aerosols, including the concentration of cloud condensation nuclei
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
Biogenic sulfur emissions and aerosols over the tropical South Atlantic: 2. One‐dimensional simulation of sulfur chemistry in the marine boundary layer
Based on experimental data collected during cruise 15/3 of R/V Meteor in the tropical South Atlantic (19°S), the marine sulfur cycle has been simulated with a one-dimensional coupled
Regional aerosol chemistry of the Amazon Basin during the dry season
We report here a set of measurements which describe the distribution and chemical composition of the atmospheric aerosol over the tropical rain forest of the Amazon Basin, in Brazil, during the 1985
Evidence for the climatic role of marine biogenic sulphur
Oceanic dimethylsulphide (DMS) emissions and atmospheric aerosol particle populations (condensation nuclei, CN), resolved by latitude and season, appear to be directly correlated, in that CN, as
Emissions of volatile organic compounds from vegetation and the implications for atmospheric chemistry
Vegetation provides a major source of reactive carbon entering the atmosphere. These compounds play an important role in (1) shaping global tropospheric chemistry, (2) regional photochemical oxidant
Reaction of N2O5 on tropospheric aerosols: Impact on the global distributions of NO x , O3, and OH
Using a three-dimensional global model of the troposphere, we show that the heterogeneous reactions of NO 3 and N205 on aerosol particles have a substantial influence on the concentrations of NOx;
The role of aerosol variations in anthropogenic ozone depletion at northern midlatitudes
Aerosol surface area distributions inferred from satelliteborne 1-μm extinction measurements are used as input to a two-dimensional model to study the effects of heterogeneous chemistry upon
Tropospheric air pollution: ozone, airborne toxics, polycyclic aromatic hydrocarbons, and particles.
OH, NO3, and O3 are shown to play a central role in the formation and fate of airborne toxic chemicals, mutagenic polycyclic aromatic hydrocarbons, and fine particles.
Surface ozone depletion in Arctic spring sustained by bromine reactions on aerosols
NEAR-TOTAL depletion of the ozone in surface air is often observed in the Arctic spring, coincident with high atmospheric concentrations of inorganic bromine1–5. Barrie et al.1 suggested that the