气候变化领域集成服务门户(CCPortal): Divergent Regional Climate Consequences of Maintaining Current Irrigation Rates in the 21st Century

CCPortal

DOI	10.1029/2019JD031814
	Divergent Regional Climate Consequences of Maintaining Current Irrigation Rates in the 21st Century
	Cook B.I.; McDermid S.S.; Puma M.J.; Williams A.P.; Seager R.; Kelley M.; Nazarenko L.; Aleinov I.
发表日期	2020
ISSN	2169897X
卷号	125 期号:14
英文摘要	There is strong evidence that the expansion and intensification of irrigation over the twentieth century has affected climate in many regions. However, it remains uncertain if these irrigation effects, including buffered warming trends, will weaken or persist under future climate change conditions. Using a 20-member climate model ensemble simulation, we demonstrate that irrigation will continue to attenuate greenhouse gas-forced warming and soil moisture drying in many regions over the 21st century, including Mexico, the Mediterranean, Southwest Asia, and China. Notably, this occurs without any further expansion or intensification of irrigation beyond current levels, even while greenhouse gas forcing steadily increases. However, the magnitude and significance of these moderating irrigation effects vary across regions and are highly sensitive to the background climate state and the degree to which evapotranspiration is supply (moisture) versus demand (energy) limited. Further, limitations on water and land availability may restrict our ability to maintain modern irrigation rates into the future. Nevertheless, it is likely that irrigation, alongside other components of intensive land management, will continue to strongly modulate regional climate impacts in the future. Irrigation should therefore be considered in conjunction with other key regional anthropogenic forcings (e.g., land cover change and aerosols) when investigating the local manifestation of global climate drivers (e.g., greenhouse gases) in model projections. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	climate change; irrigation
语种	英语
来源期刊	Journal of Geophysical Research: Atmospheres
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/185897
作者单位	NASA Goddard Institute for Space Studies, New York, NY, United States; Ocean and Climate Physics, Lamont-Doherty Earth Observatory, Palisades, NY, United States; Department of Environmental Studies, New York University, New York, NY, United States; Center for Climate Systems Research, Columbia University, New York, NY, United States; Tree-Ring Lab, Lamont-Doherty Earth Observatory, Palisades, NY, United States
推荐引用方式 GB/T 7714	Cook B.I.,McDermid S.S.,Puma M.J.,et al. Divergent Regional Climate Consequences of Maintaining Current Irrigation Rates in the 21st Century[J],2020,125(14).
APA	Cook B.I..,McDermid S.S..,Puma M.J..,Williams A.P..,Seager R..,...&Aleinov I..(2020).Divergent Regional Climate Consequences of Maintaining Current Irrigation Rates in the 21st Century.Journal of Geophysical Research: Atmospheres,125(14).
MLA	Cook B.I.,et al."Divergent Regional Climate Consequences of Maintaining Current Irrigation Rates in the 21st Century".Journal of Geophysical Research: Atmospheres 125.14(2020).