Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/NGEO2868 |
The global distribution and dynamics of surface soil moisture | |
McColl, Kaighin A.1,2; Alemohammad, Seyed Hamed1; Akbar, Ruzbeh1; Konings, Alexandra G.1,3; Yueh, Simon4; Entekhabi, Dara1,5 | |
2017-02-01 | |
发表期刊 | NATURE GEOSCIENCE
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ISSN | 1752-0894 |
EISSN | 1752-0908 |
出版年 | 2017 |
卷号 | 10期号:2 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Surface soil moisture has a direct impact on food security, human health and ecosystem function. It also plays a key role in the climate system, and the development and persistence of extreme weather events such as droughts, floods and heatwaves. However, sparse and uneven observations have made it difficult to quantify the global distribution and dynamics of surface soil moisture. Here we introduce a metric of soil moisture memory and use a full year of global observations from NASA's Soil Moisture Active Passive mission to show that surface soil moisture-a storage believed to make up less than 0.001% of the global freshwater budget by volume, and equivalent to an, on average, 8-mm thin layer of water covering all land surfaces-plays a significant role in the water cycle. Specifically, we find that surface soil moisture retains a median 14% of precipitation falling on land after three days. Furthermore, the retained fraction of the surface soil moisture storage after three days is highest over arid regions, and in regions where drainage to groundwater storage is lowest. We conclude that lower groundwater storage in these regions is due not only to lower precipitation, but also to the complex partitioning of the water cycle by the surface soil moisture storage layer at the land surface. |
领域 | 地球科学 ; 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000394121800012 |
WOS关键词 | LAND ; PRECIPITATION ; VARIABILITY ; SCALES ; MEMORY ; MODELS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/35135 |
专题 | 地球科学 气候变化 |
作者单位 | 1.MIT, Dept Civil & Environm Engn, 77 Massachusetts Ave, Cambridge, MA 02139 USA; 2.Harvard Univ, Dept Earth & Planetary Sci, 20 Oxford St, Cambridge, MA 02138 USA; 3.Stanford Univ, Dept Earth Syst Sci, Stanford, CA 94305 USA; 4.CALTECH, Jet Prop Lab, 4800 Oak Grove Dr, Pasadena, CA 91109 USA; 5.MIT, Dept Earth Atmospher & Planetary Sci, Cambridge, MA 02139 USA |
推荐引用方式 GB/T 7714 | McColl, Kaighin A.,Alemohammad, Seyed Hamed,Akbar, Ruzbeh,et al. The global distribution and dynamics of surface soil moisture[J]. NATURE GEOSCIENCE,2017,10(2). |
APA | McColl, Kaighin A.,Alemohammad, Seyed Hamed,Akbar, Ruzbeh,Konings, Alexandra G.,Yueh, Simon,&Entekhabi, Dara.(2017).The global distribution and dynamics of surface soil moisture.NATURE GEOSCIENCE,10(2). |
MLA | McColl, Kaighin A.,et al."The global distribution and dynamics of surface soil moisture".NATURE GEOSCIENCE 10.2(2017). |
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