Direct and indirect effect of aerosols on the climate of the southeastern US

被引：0
|
作者：
Saxena, VK [1 ]
Menon, S [1 ]
机构：
[1] N Carolina State Univ, Dept Marine Earth & Atmospher Sci, Raleigh, NC 27695 USA
来源：
NUCLEATION AND ATMOSPHERIC AEROSOLS 2000 | 2000年 / 534卷
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D O I：
暂无
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
The effect of sulfate aerosols on cloud microphysical and optical properties has been studied using field measurements from a rural mountaintop location at the Mt. Mitchell State Park in the southeastern U.S. The sulfate concentrations were greater during 1993-97 than during 1986-89. Cloud albedo retrieved from satellite data and calculated from surface observations does not indicate a monotonic increase with increasing sulfates. The direct and cloud-mediated radiative forcing effects due to sulfate aerosols are assessed to be -4.8 and similar to-4.0 W m(-2) These values far exceed the existing model predictions. Surface temperature records of the region during 1949-94 indicate a cooling trend tacitly supporting our assessment.
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页码：569 / 572
页数：4
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