Climate effects of anthropogenic sulfate: Simulations from a coupled chemistry/climate model
Description
In this paper, we use a more comprehensive approach by coupling a climate model with a 3-D global chemistry model to investigate the forcing by anthropogenic aerosol sulfate. The chemistry model treats the global-scale transport, transformation, and removal of SO2, DMS and H2SO4 species in the atmosphere. The mass concentration of anthropogenic sulfate from fossil fuel combustion and biomass burning is calculated in the chemistry model and provided to the climate model where it affects the shortwave radiation. We also investigate the effect, with cloud nucleation parameterized in terms of local aerosol number, sulfate mass concentration and updraft velocity. Our simulations indicate that anthropogenic sulfate may result in important increases in reflected solar radiation, which would mask locally the radiative forcing from increased greenhouse gases. Uncertainties in these results will be discussed
Availability note (English)
MF available from INIS under the Report Number; Also available from OSTI as DE94004352; NTIS; US Govt. Printing Office Dep.Files
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Additional details
Publishing Information
- Imprint Pagination
- 7 p.
- Report number
- UCRL-JC--114078
Conference
- Title
- 74. American Meteorological Society annual meeting.
- Dates
- 23-28 Jan 1994.
- Place
- Nashville, TN (United States).
INIS
- Country of Publication
- United States
- Country of Input or Organization
- United States
- INIS RN
- 25046956
- Subject category
- S54: ENVIRONMENTAL SCIENCES;
- Resource subtype / Literary indicator
- Conference
- Quality check status
- Yes
- Descriptors DEI
- AEROSOLS; ATMOSPHERIC CHEMISTRY; CLIMATE MODELS; CLOUD COVER; COMPUTERIZED SIMULATION; DMSO; EMISSION; GREENHOUSE GASES; PRECIPITATION; SULFATES; SULFUR DIOXIDE; SULFURIC ACID;
- Descriptors DEC
- CHALCOGENIDES; CHEMISTRY; COLLOIDS; DISPERSIONS; HYDROGEN COMPOUNDS; INORGANIC ACIDS; INORGANIC COMPOUNDS; MATHEMATICAL MODELS; ORGANIC COMPOUNDS; ORGANIC SULFUR COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; SEPARATION PROCESSES; SIMULATION; SOLS; SULFOXIDES; SULFUR COMPOUNDS; SULFUR OXIDES;
Optional Information
- Contract/Grant/Project number
- Contract W-7405-ENG-48; NAGW-1287
- Funding organization
- USDOE, Washington, DC (United States); National Aeronautics and Space Administration, Washington, DC (United States).
- Secondary number(s)
- CONF-940115--15.