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《Journal of Arid Land Resources and Environment》 2018-12
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Analysis of spatiotemporal variation characteristics of wind-sand days in the Yarlung Zangbo river basin during 1981-2016

ZHANG Hezhen;ZHOU Kanshe;Duojiesangzhu;Gesang;GUO Yinan;Climatic Center of the Tibet Autonomous Region;Meteorological Information Network Center of Tibet Autonomous Region;  
The temporal and spatial variation characteristics of wind and sand day were analyzed by using the observation data of 11 meteorological observation stations in the Yarlung Zangbo river basin during 1981-2016.The results showed that: the gale days occurred the most in the Yarlung Zangbo river basin; blowing sand and dust storm days were the second; dust days were the least. There are two high value areas of wind and sand weather in the Yarlung Zangbo River basin: Lazi in the upper reaches,Langkazi in the middle reaches. Where the number of wind and sand days were more than 50 days. The number of wind and sand days in the last 36 years were significantly reduced( 11. 2 d/10 a),and the trend was decreasing decanally. The reduce of wind and sand day was the most in spring,followed by winter. Precipitation in winter was positively correlated with wind and sand days. For other seasons the air temperature and precipitation were negatively correlated with wind and sand days. The trend of warm and humid climate in the Yarlung Zangbo river basin can restrain the wind,blowing sand and dust storm,but can increase the dust weather.
【Fund】: 西藏自治区气象局科技创新团队基金(XZQX201702)资助
【CateGory Index】: P333
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