气候变化领域集成服务门户(CCPortal): Assessing global water mass transfers from continents to oceans over the period 1948

CCPortal

DOI	10.5194/hess-24-4831-2020
	Assessing global water mass transfers from continents to oceans over the period 1948–2016
	Cáceres D.; Marzeion B.; Malles J.H.; Gutknecht B.D.; Schmied H.M.; Döll P.
发表日期	2020
ISSN	1027-5606
起始页码	4831
结束页码	4851
卷号	24 期号:10
英文摘要	Ocean mass and thus sea level is significantly affected by water storage on the continents. However, assessing the net contribution of continental water storage change to ocean mass change remains a challenge. We present an integrated version of the WaterGAP global hydrological model that is able to consistently simulate total water storage anomalies (TWSAs) over the global continental area (except Greenland and Antarctica) by integrating the output from the global glacier model of Marzeion et al. (2012) as an input to WaterGAP. Monthly time series of global mean TWSAs obtained with an ensemble of four variants of the integrated model, corresponding to different precipitation input and irrigation water use assumptions, were validated against an ensemble of four TWSA solutions based on the Gravity Recovery and Climate Experiment (GRACE) satellite gravimetry from January 2003 to August 2016. With a mean Nash–Sutcliffe efficiency (NSE) of 0.87, simulated TWSAs fit well to observations. By decomposing the original TWSA signal into its seasonal, linear trend and interannual components, we found that seasonal and interannual variability are almost exclusively caused by the glacier-free land water storage anomalies (LWSAs). Seasonal amplitude and phase are very well reproduced (NSE = 0.88). The linear trend is overestimated by 30 %–50 % (NSE = 0.65), and interannual variability is captured to a certain extent (NSE = 0.57) by the integrated model. During the period 1948–2016, we find that continents lost 34–41 mm of sea level equivalent (SLE) to the oceans, with global glacier mass loss accounting for 81 % of the cumulated mass loss and LWSAs accounting for the remaining 19 %. Over 1948–2016, the mass gain on land from the impoundment of water in artificial reservoirs, equivalent to 8 mm SLE, was offset by the mass loss from water abstractions, amounting to 15–21 mm SLE and reflecting a cumulated groundwater depletion of 13–19 mm SLE. Climate-driven LWSAs are highly sensitive to precipitation input and correlate with El Niño Southern Oscillation multi-year modulations. Significant uncertainty remains in the trends of modelled LWSAs, which are highly sensitive to the simulation of irrigation water use and artificial reservoirs. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
scopus关键词	Atmospheric pressure; Climate models; Geodetic satellites; Groundwater; Hydroelectric power plants; Irrigation; Sea level; Water supply; Artificial reservoirs; Continental water storage; Gravity recovery and climate experiment satellites; Groundwater depletion; Hydrological modeling; Interannual variability; Seasonal and interannual variability; Southern oscillation; Reservoirs (water); annual variation; assessment method; El Nino-Southern Oscillation; glacier mass balance; GRACE; groundwater; hydrological modeling; precipitation (climatology); reservoir; sea level; spatiotemporal analysis; water mass; water storage; Antarctica; Arctic; Greenland
来源期刊	Hydrology and Earth System Sciences
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/159286
作者单位	Cáceres, D., Institute of Physical Geography, Goethe University Frankfurt, Frankfurt am Main, Germany; Marzeion, B., Institute of Geography, University of Bremen, Bremen, Germany, MARUM – Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany; Malles, J.H., Institute of Geography, University of Bremen, Bremen, Germany, MARUM – Center for Marine Environmental Sciences, University of Bremen, Bremen, Germany; Gutknecht, B.D., Institut für Planetare Geodäsie, Technische Universität Dresden, Dresden, Germany; Schmied, H.M., Institute of Physical Geography, Goethe University Frankfurt, Frankfurt am Main, Germany, Senckenberg Leibniz Biodiversity and Climate Research Centre Frankfurt (SBiK-F), Frankfurt am Main, Germany; Döll, P., Institute of Physical Geography, Goethe University Frankfurt, Frankfurt am Main, Germany, Senckenberg Leibniz Biodiversity and Climate Research Centre Frankfurt (SBiK-F), Frankfurt am Main, Germany
推荐引用方式 GB/T 7714	Cáceres D.,Marzeion B.,Malles J.H.,等. Assessing global water mass transfers from continents to oceans over the period 1948–2016[J],2020,24(10).
APA	Cáceres D.,Marzeion B.,Malles J.H.,Gutknecht B.D.,Schmied H.M.,&Döll P..(2020).Assessing global water mass transfers from continents to oceans over the period 1948–2016.Hydrology and Earth System Sciences,24(10).
MLA	Cáceres D.,et al."Assessing global water mass transfers from continents to oceans over the period 1948–2016".Hydrology and Earth System Sciences 24.10(2020).