Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1088/1748-9326/aa65a6 |
Local land-atmosphere feedbacks limit irrigation demand | |
Decker, Mark; Ma, Shaoxiu; Pitman, Andy | |
通讯作者 | Decker, Mark |
来源期刊 | ENVIRONMENTAL RESEARCH LETTERS |
ISSN | 1748-9326 |
出版年 | 2017 |
卷号 | 12期号:5 |
英文摘要 | Irrigation is known to influence regional climate but most studies forecast and simulate irrigation with offline (i.e. land only) models. Using south eastern Australia as a test bed, we demonstrate that irrigation demand is fundamentally different between land only and land-atmosphere simulations. While irrigation only has a small impact on maximum temperature, the semi-arid environment experiences near surface moistening in coupled simulations over the irrigated regions, a feedback that is prevented in offline simulations. In land only simulations that neglect the local feedbacks, the simulated irrigation demand is 25% higher and the standard deviation of the mean irrigation rate is 60% smaller. These local-scale irrigation-driven feedbacks are not resolved in coarse-resolution climate models implying that use of these tools will overestimate irrigation demand. Future studies of irrigation demand must therefore account for the local land-atmosphere interactions by using coupled frameworks, at a spatial resolution that captures the key feedbacks. |
英文关键词 | irrigation land-atmosphere interactions evapotranspiration modeling |
类型 | Article |
语种 | 英语 |
国家 | Australia |
收录类别 | SCI-E |
WOS记录号 | WOS:000400175000002 |
WOS关键词 | CLIMATE-CHANGE IMPACTS ; CONTERMINOUS UNITED-STATES ; SURFACE FLUXES ; EVAPOTRANSPIRATION ; REQUIREMENTS ; VARIABILITY ; SENSITIVITY ; MITIGATION ; MODIS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/198758 |
作者单位 | Univ New South Wales, ARC Ctr Excellence Climate Syst Sci, Climate Change Res Ctr, Sydney, NSW, Australia |
推荐引用方式 GB/T 7714 | Decker, Mark,Ma, Shaoxiu,Pitman, Andy. Local land-atmosphere feedbacks limit irrigation demand[J],2017,12(5). |
APA | Decker, Mark,Ma, Shaoxiu,&Pitman, Andy.(2017).Local land-atmosphere feedbacks limit irrigation demand.ENVIRONMENTAL RESEARCH LETTERS,12(5). |
MLA | Decker, Mark,et al."Local land-atmosphere feedbacks limit irrigation demand".ENVIRONMENTAL RESEARCH LETTERS 12.5(2017). |
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