Atmospheric Chemistry and Physics Discussions
www.atmos-chem-phys-discuss.net
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7
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2007
10.5194/acpd-7-9115-2007
http://www.atmos-chem-phys-discuss.net/7/9115/2007/
http://www.atmos-chem-phys-discuss.net/7/9115/2007/acpd-7-9115-2007.html
http://www.atmos-chem-phys-discuss.net/7/9115/2007/acpd-7-9115-2007.pdf
9115
9138
2007-06-27
Surface observation of sand and dust storm in East Asia and its application in CUACE/Dust
Y. Q. Wang
wangyq@cams.cma.gov.cn
X. Y. Zhang
S. L. Gong
C. H. Zhou
X. Q. Hu
H. L. Liu
T. Niu
Y. Q. Yang
Laboratory of Atmospheric Chemistry, Centre for Atmosphere Watch and Services, Chinese Academy of Meteorological Sciences, Beijing, China
Air Quality Research Division, Science and Technology Branch, Environment Canada, Toronto, Canada
National Meteorological Satellite Center, CMA, Beijing, China
The spatial-temporal distributions and sources of sand and dust storm (SDS) in East Asia from 2001 to 2006 were
investigated on the basis of visibility and PM<sub>10</sub> data from the routine SDS
and weather monitoring networks run by CMA (China Meteorological
Administration). A power functional relationships between PM<sub>10</sub> and
visibility was found among various regions generally with a good correlation
(r<sup>2</sup>=0.90), especially in Asian SDS source regions. In addition,
three SDS occurrence centers, i.e. western China, Mongolia and northern
China, were identified with the Mongolia source contributing more dust to
the downwind areas including Korea and Japan than other two sources.
Generally, high PM<sub>10</sub> concentrations were observed in most areas of northern
China. The highest value was obtained in the center of western China with a
spring daily mean value of 876 μg m<sup>−3</sup>, and the value in other
source regions exceeds 200 μg m<sup>−3</sup>. These data sets together with
the satellite observations in China form the main observation database for
the evaluation and data assimilation of CUACE/Dust system – an operational
SDS forecasting system for East Asia.
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