干旱区生态环境知识资源中心(Arid): Assessing the freshwater flux from the continents to the Mediterranean Sea

Arid

DOI	10.1038/s41598-019-44293-1
	Assessing the freshwater flux from the continents to the Mediterranean Sea
	Wang, Fuxing; Polcher, Jan
通讯作者	Polcher, Jan
来源期刊	SCIENTIFIC REPORTS
ISSN	2045-2322
出版年	2019
卷号	9
英文摘要	Precipitation minus evaporation over continents is the freshwater flux which can be sustainably exploited by mankind. Over a catchment and longer time periods, this flux is also the amount of water which flows into the ocean. An essential question for semi-arid areas of the world is how well this freshwater flux can be estimated and predicted to evolve under climate change and human water use. Knowing this flux is thus an essential element in regional water resources management. Here we examine this question over the catchment of the Mediterranean Sea. Using a novel data assimilation methodology that incorporates observed discharges of rivers in a land surface model, new estimates of the freshwater flux to the Mediterranean Sea for the period 1980-2013 are proposed. We find that more freshwater (40-60%) flows into the sea than previously estimated. The hypothesis we advance is that previous estimates have underestimated the discharges of the large number of unmonitored coastal basins and neglected submarine ground water flows. The proposed error bars on the estimate indicate that the degrading river gauging station network limits our ability to monitor this branch of the water cycle reliably. Nevertheless, the uncertainty is small enough to allow the identification of regions in which non-climatic decreases in the freshwater flows exist over the period.
类型	Article
语种	英语
国家	France
开放获取类型	Green Published, gold
收录类别	SCI-E
WOS记录号	WOS:000469318500012
WOS关键词	RIVER DISCHARGE ; BLACK-SEA ; VARIABILITY ; NUTRIENTS ; BUDGET ; MODEL ; PRECIPITATION ; ASSIMILATION ; RESOURCES ; TRENDS
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/2XILL650/218787
作者单位	Ecole Polytech, CNRS, IPSL, Lab Meteorol Dynam, F-91128 Palaiseau, France
推荐引用方式 GB/T 7714	Wang, Fuxing,Polcher, Jan. Assessing the freshwater flux from the continents to the Mediterranean Sea[J],2019,9.
APA	Wang, Fuxing,&Polcher, Jan.(2019).Assessing the freshwater flux from the continents to the Mediterranean Sea.SCIENTIFIC REPORTS,9.
MLA	Wang, Fuxing,et al."Assessing the freshwater flux from the continents to the Mediterranean Sea".SCIENTIFIC REPORTS 9(2019).