干旱区生态环境知识资源中心(Arid): Spatial and temporal distribution of precipitation based on corrected TRMM data around the Hexi Corridor, China

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	Spatial and temporal distribution of precipitation based on corrected TRMM data around the Hexi Corridor, China
	Zhang Tao; He Yuanqing; Ma Jian; Pang Juan
来源期刊	Sciences in Cold and Arid Regions
ISSN	1674-3822
出版年	2014
卷号	6 期号:2 页码:159-167
英文摘要	Accurate rainfall distribution is difficult to acquire based on limited meteorological stations, especially in remote areas like high mountains and deserts. The Hexi Corridor and its adjacent regions (including the Qilian Mountains and the Alxa Plateau) are typical districts where there are only 30 available rain gauges. Tropical Rainfall Measuring Mission (TRMM) data provide a possible solution. After precision analysis of monthly 0.25 degree resolution TRMM 3B43 data from 1998 to 2012, we find that the correlations between TRMM 3B43 estimates and rain gauge precipitation are significant overall and in each station around the Hexi Corridor;however, the biases of annual precipitation differ in different stations and are seriously overestimated in most of the sites. Thus, Inverse Distance Weighting (IDW) interpolation method was used to rectify TRMM data based on the difference between TRMM 3B43 estimates and rain gauge observations. The results show that rectified TRMM data present more details than rain gauges in remote areas where there are few stations, although they show high coherence of distribution. Precipitation decreases from southeast to northwest on an annual and seasonal scale. There are three rainfall centers (>500 mm) including Menyuan, Qilian and Toson Lake, and two low rainfall centers (<50 mm) including Dunhuang and Ejin Banner. Meanwhile, precipitation in most of the study area presents an increasing trend;especially in northern Qilian Mountains (>5 mm/a), Badain Jaran Desert (>2 mm/a), Toson Lake (>20 mm/a) and Qingtu Lake (>20 mm/a) which shows a significant increasing trend, while precipitation in Hala Lake (<-2 mm/a) and Tengger Desert (<-3 mm/a) demonstrates a decreasing trend.
英文关键词	Hexi Corridor TRMM 3B43 precipitation spatial and temporal variation
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Science & Technology - Other Topics
CSCD记录号	CSCD:5135556
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/335356
作者单位	Zhang Tao, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, State Key Laboratory of Cryospheric Science, Lanzhou, Gansu 730000, China.; He Yuanqing, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, State Key Laboratory of Cryospheric Science, Lanzhou, Gansu 730000, China.; Ma Jian, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, State Key Laboratory of Cryospheric Science, Lanzhou, Gansu 730000, China.; Pang Juan, Cold and Arid Regions Environmental and Engineering Research Institute, Chinese Academy of Sciences, State Key Laboratory of Cryospheric Science, Lanzhou, Gansu 730000, China.
推荐引用方式 GB/T 7714	Zhang Tao,He Yuanqing,Ma Jian,et al. Spatial and temporal distribution of precipitation based on corrected TRMM data around the Hexi Corridor, China[J],2014,6(2):159-167.
APA	Zhang Tao,He Yuanqing,Ma Jian,&Pang Juan.(2014).Spatial and temporal distribution of precipitation based on corrected TRMM data around the Hexi Corridor, China.Sciences in Cold and Arid Regions,6(2),159-167.
MLA	Zhang Tao,et al."Spatial and temporal distribution of precipitation based on corrected TRMM data around the Hexi Corridor, China".Sciences in Cold and Arid Regions 6.2(2014):159-167.