Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1002/2016JD025740 |
Present-day irrigation mitigates heat extremes | |
Thiery, Wim1,2; Davin, Edouard L.1; Lawrence, David M.3; Hirsch, Annette L.1; Hauser, Mathias1; Seneviratne, Sonia I.1 | |
2017-02-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2017 |
卷号 | 122期号:3 |
文章类型 | Article |
语种 | 英语 |
国家 | Switzerland; Belgium; USA |
英文摘要 | Irrigation is an essential practice for sustaining global food production and many regional economies. Emerging scientific evidence indicates that irrigation substantially affects mean climate conditions in different regions of the world. Yet how this practice influences climate extremes is currently unknown. Here we use ensemble simulations with the Community Earth System Model to assess the impacts of irrigation on climate extremes. An evaluation of the model performance reveals that irrigation has a small yet overall beneficial effect on the representation of present-day near-surface climate. While the influence of irrigation on annual mean temperatures is limited, we find a large impact on temperature extremes, with a particularly strong cooling during the hottest day of the year (-0.78 K averaged over irrigated land). The strong influence on extremes stems from the timing of irrigation and its influence on land-atmosphere coupling strength. Together these effects result in asymmetric temperature responses, with a more pronounced cooling during hot and/or dry periods. The influence of irrigation is even more pronounced when considering subgrid-scale model output, suggesting that local effects of land management are far more important than previously thought. Our results underline that irrigation has substantially reduced our exposure to hot temperature extremes in the past and highlight the need to account for irrigation in future climate projections. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000396119200002 |
WOS关键词 | EARTH SYSTEM MODEL ; LAND-COVER CHANGE ; RWENZORI MOUNTAINS ; HOT EXTREMES ; CLIMATE ; WATER ; TEMPERATURE ; PRECIPITATION ; IMPACT ; 20TH-CENTURY |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/33858 |
专题 | 气候变化 |
作者单位 | 1.ETH, Inst Atmospher & Climate Sci, Zurich, Switzerland; 2.Vrije Univ Brussel, Dept Hydrol & Hydraul Engn, Brussels, Belgium; 3.Natl Ctr Atmospher Res, POB 3000, Boulder, CO 80307 USA |
推荐引用方式 GB/T 7714 | Thiery, Wim,Davin, Edouard L.,Lawrence, David M.,et al. Present-day irrigation mitigates heat extremes[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2017,122(3). |
APA | Thiery, Wim,Davin, Edouard L.,Lawrence, David M.,Hirsch, Annette L.,Hauser, Mathias,&Seneviratne, Sonia I..(2017).Present-day irrigation mitigates heat extremes.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,122(3). |
MLA | Thiery, Wim,et al."Present-day irrigation mitigates heat extremes".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 122.3(2017). |
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