History of sulfate aerosol radiative forcings

Details History of sulfate aerosol radiative forcings History of sulfate aerosol radiative forcings

May 2002

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2002georl..29i..22b&link_type=abstract

Geophysical Research Letters, Volume 29, Issue 9, pp. 22-1, CiteID 1308, DOI 10.1029/2001GL014048

Physics

38

Atmospheric Composition And Structure: Aerosols And Particles (0345, 4801), Atmospheric Composition And Structure: Evolution Of The Atmosphere, Global Change: Atmosphere (0315, 0325), Meteorology And Atmospheric Dynamics: Radiative Processes

Scientific paper

The history of the global sulfur cycle has been simulated using an emission inventory of SO2 for 1990 and previously published historical trends in emission on a per country basis. The global- annual-mean radiative forcings due to sulfate aerosols increase (in absolute values) from near-zero and -0.17 Wm-2 up to -0.4 and -1 Wm-2 between 1850 and 1990, for the direct and indirect effects, respectively. The forcing efficiency (defined as the ratio of the radiative forcing to the anthropogenic sulfate burden) is fairly constant for the direct effect at -150 W(g sulfate)-1 but decreases significantly for the indirect effect with increasing sulfate burden. The model results are compared with long-term observations for the period 1980 to 1998 in the U.S. and Europe.

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