DOI: 10.1007/s00382-014-2087-7
Scopus记录号: 2-s2.0-84899939898
论文题名: A diagnostic study of future evaporation changes projected in CMIP5 climate models
作者: Laîné A. ; Nakamura H. ; Nishii K. ; Miyasaka T.
刊名: Climate Dynamics
ISSN: 9307575
出版年: 2014
卷: 42, 期: 2017-09-10 起始页码: 2745
结束页码: 2761
语种: 英语
英文关键词: Climate change
; Climate modeling
; CMIP5
; Evaporation
; Hydrological cycle
; RCP45
英文摘要: It has been pointed out that climatological-mean precipitation-evaporation difference (P-E) should increase under global warming mainly through the increasing saturation level of moisture. This study focuses on evaporation changes under global warming and their dependency on the direct warming effect, on the basis of future projections from the Coupled Model Intercomparison Project Phase 5 (CMIP5). Over most of the tropical, subtropical and midlatitude regions, the direct contribution from surface temperature increase is found to dominate the projected increase in evaporation. This contribution is nevertheless offset partially, especially over the oceans, by contributions from weakening surface winds and increasing near-surface relative humidity. Greater warming of surface air than of the sea surface also acts to reduce surface evaporation, by reducing both the exchange coefficient and humidity contrast at the surface. Though generally of secondary importance, this contribution is the dominant factor over the subpolar oceans. Over the polar oceans, the effect of sea-ice retreat dominantly contributes to the evaporation increase in winter, whereas the reduced exchange coefficient and surface humidity contrast coupled with the sea-ice retreat account for most of the response during summertime. Over the continents, changes in the surface exchange coefficient, reflecting changes in soil moisture and vegetation among other factors, are important to modulate the direct effects of the warming and the generally reduced surface air relative humidity. © 2014 The Author(s). 资助项目: MEXT, Ministry of Education, Culture, Sports, Science, and Technology
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/54682
Appears in Collections: 过去全球变化的重建
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作者单位: RCAST, The University of Tokyo, Tokyo, Japan; Atmosphere-Ocean Research Institute, University of Tokyo, Kashiwa, Japan
Recommended Citation:
Laîné A.,Nakamura H.,Nishii K.,et al. A diagnostic study of future evaporation changes projected in CMIP5 climate models[J]. Climate Dynamics,2014-01-01,42(2017-09-10)