Geoscience Reference
In-Depth Information
emission, carbonaceous aerosols (organic carbon + black carbon), sulfate,
nitrate, ammonium and sea salt, respectively.
5. Summary
The ADAM and the aerosol dynamic model using MM5 meteorological
output on a 60
60 km
2
grid have been used to simulate the temporal and
spatial distribution of the Asian dust aerosol and the anthropogenic aerosol
concentrations in Asia for the period from 1 to 31 March 2002. During this
period severe dust storm events have been reported.
The results indicate that the spatial distribution patterns of monthly
mean column anthropogenic aerosol concentrations are quite similar to
those of emission rates but the maximum concentration zone is slightly
further southeast due to the prevailing wind. The high PM
10
concentra-
tions in northern China and Mongolia are mainly due to the Asian dust
aerosol whereas those in eastern China and Korea are a mixture of Asian
dust and anthropogenic aerosols.
The time-area mean column aerosol mass value is about 160 mg/m
2
,
of which 79 and 21% contribute to Asian dust and anthropogenic aerosols,
respectively. Averaged total non-soil oriented aerosol mass is 35 mg/m
2
,of
which 23, 24, 16, 11, 5, and 21% contribute to the PM
10
emission, carbona-
ceous aerosols (organic carbon + black carbon), sulfate, nitrate, ammonium
and sea salt, respectively.
×
Acknowledgments
This research is partially supported by the Climate Environment System
Research Center funded by the Korea Science and Engineering Foundation,
the Ministry of Education under the Brain Korea 21 Program and the Mete-
orological and Earthquake R&D Program funded by Korea Meteorological
Administration.
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