Estimating Potential Evaporation from Vegetated Surfaces for Water Management Impact Assessments Using Climate Model Output
Estimating Potential Evaporation from Vegetated Surfaces for Water Management Impact Assessments Using Climate Model Output
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DOI：
10.1175/2011jhm1379.1
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发表时间：
2011-10
影响因子：
3.8
通讯作者：
V. Bell;N. Gedney;A. Kay;Roderick N. B. Smith;Richard G. Jones;R. Moore
中科院分区：
文献类型：
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作者：
V. Bell;N. Gedney;A. Kay;Roderick N. B. Smith;Richard G. Jones;R. Moore
面对气候变化，关注维持供水和减轻洪水风险的流域管理者正在从气候模型中获取产出，并将其用于水文模型的评估目的。在以降水为主要产出的同时，蒸发量也因其对流域水量平衡的重要意义而日益受到重视。气候模式提供的实际蒸发量估计值与其简化的陆地表面方案相一致，但自然不提供通常需要作为水文模式输入的潜在蒸发量估计值。在使用具有整体土壤水分核算方案的独立水文模式时，使用由大气强迫控制的PE估计值具有明显的优势。如果PE能够在气候模式之外解释不同或变化的土地覆盖对PE的影响，那么PE提供的大气-土地解耦近似将证明具有进一步的好处。T…
AbstractRiver basin managers concerned with maintaining water supplies and mitigating flood risk in the face of climate change are taking outputs from climate models and using them in hydrological models for assessment purposes. While precipitation is the main output used, evaporation is attracting increasing attention because of its significance to the water balance of river basins. Climate models provide estimates of actual evaporation that are consistent with their simplified land surface schemes but do not naturally provide the estimates of potential evaporation (PE) commonly required as input to hydrological models. There are clear advantages in using PE estimates controlled by atmospheric forcings when using stand-alone hydrological models with integral soil-moisture accounting schemes. The atmosphere–land decoupling approximation that PE provides can prove to be of further benefit if it is possible to account for the effect of different, or changing, land cover on PE outside of the climate model. T...