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Remote detection of water management impacts on evapotranspiration in the Colorado River Basin
Castle S. L.; Reager, J. T.; Thomas, B. F.; Purdy, A. J.; Lo, M. H.; Famiglietti, J. S.; Tang, Q. H.
出处Geophysical Research Letters
2016
43
10
5089-5097
关键词energy-balance satellite-observations grace measurements climate models surface gravity system precipitation variability irrigation
英文摘要The complexity involved in accurate estimation and numerical simulation of regional evapotranspiration (ET) can lead to inconsistency among techniques, usually attributed to methodological deficiencies. Here we hypothesize instead that discrepancies in ET estimates should be expected in some cases and can be applied to measure the effect of anthropogenic influences in developed river basins. We compare an ensemble of corrected ET estimates from land surface models with Gravity Recovery and Climate Experiment and Moderate Resolution Imaging Spectroradiometer satellite-based estimates in the intensively managed Colorado River Basin to contrast the roles of natural variability and human impacts. Satellite-based approaches yield larger annual amplitudes in ET estimates than land surface model simulations, primarily during the growing season. We find a total satellite-based ET flux of 142 +/- 7MAF yr(-1) (175 +/- 8.63 km(3) yr(-1)), with 38% due to anthropogenic influences during summer months. We evaluate our estimates by comparison with reservoir storage and usage allotment components of the basin water management budget.
收录类别SCI
语种英语
ISSN号0094-8276
DOI标识10.1002/2016gl068675
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被引频次:5[WOS]   [WOS记录]     [WOS相关记录]
文献类型SCI/SSCI论文
条目标识符http://ir.igsnrr.ac.cn/handle/311030/42880
专题历年回溯文献
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Castle S. L.,Reager, J. T.,Thomas, B. F.,et al. Remote detection of water management impacts on evapotranspiration in the Colorado River Basin. 2016.
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