Received date: 2003-02-20
Revised date: 2003-07-30
Online published: 2003-12-25
Supported by
"973" Project of the Committee of of National Planning, No.SCB-04
Based on duststorm observations during 1954-2000 from around 700 meteorological stations, this paper analyzed seasonal and inter-annual variation features. The impacts of strong wind and precipitation on the duststorms were especially emphasized. The results show that the frequency of China's duststorms is influenced by many climate factors. In NW China and northern Inner Mongolia, the main duststorm regions, the influences of climate conditions are most obvious. Wind speed and humidity are the most important controls for the seasonal cycle of duststorm frequency, and precipitation is one of the most dominant factors impacting inter-annual variability. The good correlation between the summer rainfall and duststorm frequency of next spring suggests some climate predictability.
Key words： duststorms; climate background; strong wind; humidity; precipitation; northern China
ZHAI Panmao, LI Xiaoyan . On Climate Background of Duststorms over Northern China[J]. Acta Geographica Sinica, 2003 , 58(7s) : 125 -131 . DOI: 10.11821/xb20037s015
[1] Wang Xiwen, Sun Landong, Ji Lanzhi et al. Variations of dust storms in Gansu. Meteorological Technology and Science, 2002, 30(3): 158-162.
[王锡稳, 孙兰东, 冀兰芝等. 甘肃沙尘天气变动趋势. 气象科技, 2002, 30(3): 158-162.]
[2] Zhang De'er, Lu Feng. Winter sandstorm events in extensive northern China. Quaternary Sciences, 1999, 19(5): 441-447.
[张德二, 陆风. 我国北方的冬季沙尘暴. 第四纪研究, 1999, 19 (5): 441-447.]
[3] Fang Zongyi, Zhu Fukang, Jiang Jixi et al. Research of Dust-storm in China. Beijing: Meteorological Press, 1997. 1-74.
[方宗义, 朱福康, 江吉喜等. 中国沙尘暴研究. 北京: 气象出版社, 1997. 1-74.]
[4] Central Meteorological Bureau. Surface Meteorological Observation Practice. Beijing: Meteorological Press, 1979. 21-27.
[中央气象局. 地面气象观测规范. 北京: 气象出版社, 1979. 21-27.]
[5] Yang Dongzhen, Fang Xiumei, Li Xingsheng. Analysis on the variation trend of sandstorms in northern China. Quart. J. Applied Meteorology, 1998, 9(3): 352-358.
[杨东贞, 房秀梅, 李兴生. 我国北方沙尘暴变化趋势的分析. 应用气象学报, 1998, 9(3): 352-358.]
[6] Zhou Zijiang. Blowing-sand and sandstorm in China in recent 45 years. Quaternary Sciences, 2001, 21(1): 9-17.
[周自江. 近45年中国扬沙和沙尘暴天气. 第四纪研究, 2001, 21 (1): 9-17.]
/
| 〈 |
|
〉 |