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RECORD NUMBER: 291 OF 330

OLS Field Name OLS Field Data
Main Title Study of Direct and Cloud-Mediated Radiative Forcing of Climate Due to Aerosols.
Author Yu, S. C. ;
CORP Author North Carolina State Univ. at Raleigh.;National Aeronautics and Space Administration, Washington, DC.;National Inst. for Global Environmental Change, Tuscaloosa, AL.;Department of Energy, Washington, DC.;Environmental Protection Agency, Washington, DC.
Publisher 1999
Year Published 1999
Report Number NAS1-18944 ;EPA-R-825248;
Stock Number N20010110721
Additional Subjects Radiative transfer ; Aerosols ; Climate change ; Temperature profiles ; Greenhouse effect ; Atmospheric heating ; Air pollution ; Cloud cover ; China ; United states ; Biomass burning ; Size distribution ; Humidity ; Refractivity ; Condensation nuclei ; Ion concentration ;
Holdings
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Status
NTIS  N20010110721 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. NTIS 10/21/2002
Collation 264p
Abstract
The Intergovernmental Panel on Climate Change (IPCC) has reported that in the southeastern US and eastern China, the general greenhouse warming due to anthropogenic gaseous emissions is dominated by the cooling effect of anthropogenic aerosols. To verify this model prediction in eastern China and southeastern US, we analyzed regional patterns of climate changes at 72 stations in eastern China during 1951- 94 (44 years), and at 52 stations in the southeastern US during 1949-94 (46 years) to detect the fingerprint of aerosol radiative forcing. It was found that the mean rates of change of annual mean daily, maximum, minimum temperatures and diurnal temperature range (DTR) in eastern China were 0.8, -0.2, 1.8, and -2.0 C/100 years respectively, while the mean rates of change of annual mean daily, maximum, minimum temperatures and DTR in the southeastern US were -0.2, -0.6, 0.2, and -0.8 C/100 years, respectively. This indicates that the high rate of increase in annual mean minimum temperature in eastern China results in a slightly warming trend of daily temperature, while the high rate of decrease in annual mean maximum temperature and low rate of increase in annual mean minimum temperature lead to the cooling trend of daily temperature in the southeastern US. We found that the warming from the longwave forcing due to both greenhouse gases and aerosols was completely counteracted by the shortwave aerosol forcing in the southeastern US in the past 46 years. A slightly overall warming trend in eastern China is evident; winters have become milder.