干旱区生态环境知识资源中心(Arid): Human alteration of global surface water storage variability

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DOI	10.1038/s41586-021-03262-3
	Human alteration of global surface water storage variability
	Cooley, Sarah W.; Ryan, Jonathan C.; Smith, Laurence C.
通讯作者	Cooley, SW (corresponding author), Stanford Univ, Dept Earth Syst Sci, Stanford, CA 94305 USA. ; Cooley, SW (corresponding author), Univ Oregon, Dept Geog, Eugene, OR 97403 USA.
来源期刊	NATURE
ISSN	0028-0836
EISSN	1476-4687
出版年	2021
卷号	591 期号:7848 页码:78-+
英文摘要	Knowing the extent of human influence on the global hydrological cycle is essential for the sustainability of freshwater resources on Earth(1,2). However, a lack of water level observations for the world's ponds, lakes and reservoirs has limited the quantification of human-managed (reservoir) changes in surface water storage compared to its natural variability(3). The global storage variability in surface water bodies and the extent to which it is altered by humans therefore remain unknown. Here we show that 57 per cent of the Earth's seasonal surface water storage variability occurs in human-managed reservoirs. Using measurements from NASA's ICESat-2 satellite laser altimeter, which was launched in late 2018, we assemble an extensive global water level dataset that quantifies water level variability for 227,386 water bodies from October 2018 to July 2020. We find that seasonal variability in human-managed reservoirs averages 0.86 metres, whereas natural water bodies vary by only 0.22 metres. Natural variability in surface water storage is greatest in tropical basins, whereas human-managed variability is greatest in the Middle East, southern Africa and the western USA. Strong regional patterns are also found, with human influence driving 67 per cent of surface water storage variability south of 45 degrees north and nearly 100 per cent in certain arid and semi-arid regions. As economic development, population growth and climate change continue to pressure global water resources(4), our approach provides a useful baseline from which ICESat-2 and future satellite missions will be able to track human modifications to the global hydrologic cycle.
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000626921700013
WOS关键词	RESERVOIRS ; LAND ; IMPACT ; LAKES ; ELEVATION ; SEDIMENT ; DAMS ; AREA
WOS类目	Multidisciplinary Sciences
WOS研究方向	Science & Technology - Other Topics
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351190
作者单位	[Cooley, Sarah W.] Stanford Univ, Dept Earth Syst Sci, Stanford, CA 94305 USA; [Cooley, Sarah W.; Ryan, Jonathan C.] Univ Oregon, Dept Geog, Eugene, OR 97403 USA; [Ryan, Jonathan C.; Smith, Laurence C.] Brown Univ, Inst Brown Environm & Soc, Providence, RI 02912 USA; [Smith, Laurence C.] Brown Univ, Dept Earth Environm & Planetary Sci, Providence, RI 02912 USA
推荐引用方式 GB/T 7714	Cooley, Sarah W.,Ryan, Jonathan C.,Smith, Laurence C.. Human alteration of global surface water storage variability[J],2021,591(7848):78-+.
APA	Cooley, Sarah W.,Ryan, Jonathan C.,&Smith, Laurence C..(2021).Human alteration of global surface water storage variability.NATURE,591(7848),78-+.
MLA	Cooley, Sarah W.,et al."Human alteration of global surface water storage variability".NATURE 591.7848(2021):78-+.