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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.
	2016
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.
出处	Geophysical Research Letters
卷	43
期	10
页	5089-5097
语种	英语
ISSN号	0094-8276
DOI标识	10.1002/2016gl068675
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/42880]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	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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