Published September 1993 | Version v1
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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.

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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).