globalchange  > 气候变化事实与影响
DOI: 10.5194/hess-22-241-2018
Scopus记录号: 2-s2.0-85040601242
论文题名:
A Climate Data Record (CDR) for the global terrestrial water budget: 1984-2010
作者: Zhang Y; , Pan M; , Sheffield J; , Siemann A; L; , Fisher C; K; , Liang M; , Beck H; E; , Wanders N; , MacCracken R; F; , Houser P; R; , Zhou T; , Lettenmaier D; P; , Pinker R; T; , Bytheway J; , Kummerow C; D; , Wood E; F
刊名: Hydrology and Earth System Sciences
ISSN: 10275606
出版年: 2018
卷: 22, 期:1
起始页码: 241
结束页码: 263
语种: 英语
Scopus关键词: Climate models ; Clock and data recovery circuits (CDR circuits) ; Digital storage ; Earth (planet) ; NASA ; Remote sensing ; Runoff ; Water resources ; Water supply ; Climate data records ; Data assimilation techniques ; Land surface modeling ; Multiple data sources ; Satellite remote sensing ; Scientific community ; Temporal and spatial variability ; United states geological surveys ; Budget control ; climate change ; data assimilation ; estimation method ; evapotranspiration ; gauge ; hydrological cycle ; hydrological modeling ; in situ measurement ; Kalman filter ; river discharge ; runoff ; spatial variation ; water budget ; water resource
英文摘要: Closing the terrestrial water budget is necessary to provide consistent estimates of budget components for understanding water resources and changes over time. Given the lack of in situ observations of budget components at anything but local scale, merging information from multiple data sources (e.g., in situ observation, satellite remote sensing, land surface model, and reanalysis) through data assimilation techniques that optimize the estimation of fluxes is a promising approach. Conditioned on the current limited data availability, a systematic method is developed to optimally combine multiple available data sources for precipitation (P), evapotranspiration (ET), runoff (R), and the total water storage change (TWSC) at 0.5° spatial resolution globally and to obtain water budget closure (i.e., to enforce P - ET - R - TWSC = 0) through a constrained Kalman filter (CKF) data assimilation technique under the assumption that the deviation from the ensemble mean of all data sources for the same budget variable is used as a proxy of the uncertainty in individual water budget variables. The resulting long-term (1984-2010), monthly 0.5° resolution global terrestrial water cycle Climate Data Record (CDR) data set is developed under the auspices of the National Aeronautics and Space Administration (NASA) Earth System Data Records (ESDRs) program. This data set serves to bridge the gap between sparsely gauged regions and the regions with sufficient in situ observations in investigating the temporal and spatial variability in the terrestrial hydrology at multiple scales. The CDR created in this study is validated against in situ measurements like river discharge from the Global Runoff Data Centre (GRDC) and the United States Geological Survey (USGS), and ET from FLUXNET. The data set is shown to be reliable and can serve the scientific community in understanding historical climate variability in water cycle fluxes and stores, benchmarking the current climate, and validating models. © Author(s) 2018.
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/79428
Appears in Collections:气候变化事实与影响

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作者单位: Department of Civil and Environmental Engineering, Princeton University, Princeton, NJ, United States; National Meteorological Center, China Meteorological Administration, Beijing, China; George Mason University, Fairfax, VA, United States; Pacific Northwest National Laboratory, Richland, WA, United States; Department of Geography, University of California, Los Angeles, CA, United States; Department of Meteorology, University of Maryland, College Park, MD, United States; Department of Atmospheric Science, Colorado State University, Fort Collins, CO, United States

Recommended Citation:
Zhang Y,, Pan M,, Sheffield J,et al. A Climate Data Record (CDR) for the global terrestrial water budget: 1984-2010[J]. Hydrology and Earth System Sciences,2018-01-01,22(1)
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