DOI: 10.5194/hess-21-821-2017
Scopus记录号: 2-s2.0-85012247107
论文题名: Validation of terrestrial water storage variations as simulated by different global numerical models with GRACE satellite observations
作者: Zhang L ; , Dobslaw H ; , Stacke T ; , Güntner A ; , Dill R ; , Thomas M
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2017
卷: 21, 期: 2 起始页码: 821
结束页码: 837
语种: 英语
Scopus关键词: Atmospheric structure
; Climate models
; Digital storage
; Geodetic satellites
; Atmospheric forcing
; Future improvements
; Global numerical simulations
; Global water cycle
; Gravity recovery and climate experiment satellites
; Hydrological models
; Spatial characteristics
; Terrestrial water storage
; Numerical models
; accuracy assessment
; atmospheric forcing
; basin
; discharge
; GRACE
; hydrological cycle
; hydrological modeling
; hydrometeorology
; numerical model
; parameterization
; satellite data
; satellite mission
; water storage
英文摘要: Estimates of terrestrial water storage (TWS) variations from the Gravity Recovery and Climate Experiment (GRACE) satellite mission are used to assess the accuracy of four global numerical model realizations that simulate the continental branch of the global water cycle. Based on four different validation metrics, we demonstrate that for the 31 largest discharge basins worldwide all model runs agree with the observations to a very limited degree only, together with large spreads among the models themselves. Since we apply a common atmospheric forcing data set to all hydrological models considered, we conclude that those discrepancies are not entirely related to uncertainties in meteorologic input, but instead to the model structure and parametrization, and in particular to the representation of individual storage components with different spatial characteristics in each of the models. TWS as monitored by the GRACE mission is therefore a valuable validation data set for global numerical simulations of the terrestrial water storage since it is sensitive to very different model physics in individual basins, which offers helpful insight to modellers for the future improvement of large-scale numerical models of the global terrestrial water cycle. © Author(s) 2017. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79263
Appears in Collections: 气候变化事实与影响
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作者单位: Helmholtz Centre Potsdam, GFZ German Research Centre for Geosciences, Potsdam, Germany; Max Planck Institute for Meteorology, Hamburg, Germany; Institute of Meteorology, Free University of Berlin, Berlin, Germany
Recommended Citation:
Zhang L,, Dobslaw H,, Stacke T,et al. Validation of terrestrial water storage variations as simulated by different global numerical models with GRACE satellite observations[J]. Hydrology and Earth System Sciences,2017-01-01,21(2)