Recent frequent dust events and their relation to surface wind in East Asia
Recent frequent dust events and their relation to surface wind in East Asia
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DOI：
10.1029/2003gl017261
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发表时间：
2003-07-19
影响因子：
5.2
通讯作者：
Mikami, M
中科院分区：
文献类型：
--
作者：
Kurosaki, Y;Mikami, M
与过去七年(1993-1999年)相比，过去三年(2000-2002年)亚洲大陆东部的粉尘暴发显著增加。这一发现与日本同期KOSA(即黄沙)事件的年变化相吻合。1993-1999年，沙尘暴发发生在蒙古南部、巴丹吉林沙漠和西部黄土高原周围的有限区域。但沙尘多发区向东扩展，2000年至2002年，中国北部平原、中国东北部和朝鲜半岛周边地区也频繁发生沙尘暴发。地面风尘暴发在年际变化和空间分布上有很好的对应关系。由此可见，频繁的强风是过去三年沙尘频发的主要原因。
A remarkable increase in dust outbreaks has occurred in the eastern part of the Asian Continent over the last three years (2000-2002) compared with the previous seven years (1993-1999). This finding corresponds well with the annual change of Kosa (i.e., yellow sand) events for the same period in Japan. Dust outbreaks occurred in limited regions around southern Mongolia, the Badain Jaran Desert, and the western Loess Plateau from 1993-1999. However, the area of frequent dust outbreaks expanded extensively to the east, and dust outbreaks also frequently occurred in regions around the North China Plain, northeastern China, and the Korean Peninsula in 2000-2002. Good correspondence was found between the surface wind and dust outbreaks in year-to-year variations and in spatial distributions. This indicates that frequent strong winds are the primary cause of the recurrent dust outbreaks in the last three years.