气候变化领域集成服务门户(CCPortal): Satellite-based global-ocean mass balance estimates of interannual variability and emerging trends in continental freshwater discharge

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DOI	10.1073/pnas.1003292107
	Satellite-based global-ocean mass balance estimates of interannual variability and emerging trends in continental freshwater discharge
	Syed T.H.; Famiglietti J.S.; Chambers D.P.; Willis J.K.; Hilburn K.
发表日期	2010
ISSN	0027-8424
起始页码	17916
结束页码	17921
卷号	107 期号:42
英文摘要	Freshwater discharge from the continents is a key component of Earth's water cycle that sustains human life and ecosystem health. Surprisingly, owing to a number of socioeconomic and political obstacles, a comprehensive global river discharge observing system does not yet exist. Here we use 13 years (1994-2006) of satellite precipitation, evaporation, and sea level data in an ocean mass balance to estimate freshwater discharge into the global ocean. Results indicate that global freshwater discharge averaged 36,055 km 3/y for the study period while exhibiting significant interannual variability driven primarily by El Niño Southern Oscillation cycles. The method described here can ultimately be used to estimate long-term global discharge trends as the records of sea level rise and ocean temperature lengthen. For the relatively short 13-year period studied here, global discharge increased by 540 km3/y2, which was largely attributed to an increase of globalocean evaporation (768 km3/y2). Sustained growth of these flux rates into long-term trends would provide evidence for increasing intensity of the hydrologic cycle.
英文关键词	Climate; Global water cycle; Hydrology; Observations; Remote sensing
语种	英语
scopus关键词	fresh water; article; El Nino; environmental parameters; evaporation; geology; ocean mass balance; precipitation; priority journal; sea level rise; sea surface temperature
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159149
作者单位	Syed, T.H., Department of Earth System Science, University of California, Irvine, CA 92697-3100, United States, Department of Applied Geology, Indian School of Mines, Dhanbad 826004, India; Famiglietti, J.S., Department of Earth System Science, University of California, Irvine, CA 92697-3100, United States, UC Center for Hydrologic Modeling, University of California, Irvine, CA 92697, United States; Chambers, D.P., College of Marine Science, University of South Florida, St. Petersburg, FL 33701, United States; Willis, J.K., Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, United States; Hilburn, K., Remote Sensing Systems, Santa Rosa, CA 95401, United States
推荐引用方式 GB/T 7714	Syed T.H.,Famiglietti J.S.,Chambers D.P.,et al. Satellite-based global-ocean mass balance estimates of interannual variability and emerging trends in continental freshwater discharge[J],2010,107(42).
APA	Syed T.H.,Famiglietti J.S.,Chambers D.P.,Willis J.K.,&Hilburn K..(2010).Satellite-based global-ocean mass balance estimates of interannual variability and emerging trends in continental freshwater discharge.Proceedings of the National Academy of Sciences of the United States of America,107(42).
MLA	Syed T.H.,et al."Satellite-based global-ocean mass balance estimates of interannual variability and emerging trends in continental freshwater discharge".Proceedings of the National Academy of Sciences of the United States of America 107.42(2010).