【摘要】 新疆地处亚欧大陆中部,远离海洋,对全球变化响应敏感。文中利用GRACE重力卫星数据反演得到整个新疆地区的区域月均水储量变化量,基于该水储量变化数据,得到区域旱涝指标-相对水储量指数。利用相对水储量指数对新疆2002年8月-2013年7月的干旱情况进行了分析,研究结果表明:GRACE方法反演的干旱特征与标准化降水指数(SPI)的结果基本一致;新疆2002年8月-2013年7月期间共发生了7次干旱事件,其中2008.04~2009.12干旱程度最严重,与近十年新疆干旱灾害实际情况相符合。GRACE为干旱监测提供了一种新的方法,具有良好的应用前景。更多还原

【Abstract】 Xinjiang,far from the sea,is located in the middle of the Eurasian continent and sensitive to global change. In this paper,GRACE gravity satellites data were used to recovery the water storage variation of the Xinjiang. Based on the water storage variations,the water storage deficits were obtained and used to characterize the drought of Xinjiang during August,2002 and July,2013. The results showed that the drought characteristics of GRACE- based were consistent with the results of SPI. There were seven drought events in Xinjiang during August,2002 and July,2013,and the drought event occurred in April 2008 and December 2009,was the worst one. GRACE provides for a new approach to drought monitoring,with good prospects.更多还原