气候变化领域集成服务门户(CCPortal): Greenhouse gas emissions from US irrigation pumping and implications for climate-smart irrigation policy

CCPortal

DOI	10.1038/s41467-024-44920-0
	Greenhouse gas emissions from US irrigation pumping and implications for climate-smart irrigation policy
	Driscoll, Avery W.; Conant, Richard T.; Marston, Landon T.; Choi, Eunkyoung; Mueller, Nathaniel D.
发表日期	2024
EISSN	2041-1723
起始页码	15
结束页码	1
卷号	15 期号:1
英文摘要	Irrigation reduces crop vulnerability to drought and heat stress and thus is a promising climate change adaptation strategy. However, irrigation also produces greenhouse gas emissions through pump energy use. To assess potential conflicts between adaptive irrigation expansion and agricultural emissions mitigation efforts, we calculated county-level emissions from irrigation energy use in the US using fuel expenditures, prices, and emissions factors. Irrigation pump energy use produced 12.6 million metric tonnes CO2e in the US in 2018 (90% CI: 10.4, 15.0), predominantly attributable to groundwater pumping. Groundwater reliance, irrigated area extent, water demand, fuel choice, and electrical grid emissions intensity drove spatial heterogeneity in emissions. Due to heavy reliance on electrical pumps, projected reductions in electrical grid emissions intensity are estimated to reduce pumping emissions by 46% by 2050, with further reductions possible through pump electrification. Quantification of irrigation-related emissions will enable targeted emissions reduction efforts and climate-smart irrigation expansion. This study demonstrates the energy use of US pump irrigation produced 12.6 million tonnes CO2e in 2018, with spatial variability modulated by water source and fuel choice. These county-level estimates can inform strategic irrigation expansion and emissions reduction efforts.
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:001147763900001
来源期刊	NATURE COMMUNICATIONS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/293343
作者单位	Colorado State University; Colorado State University; Virginia Polytechnic Institute & State University
推荐引用方式 GB/T 7714	Driscoll, Avery W.,Conant, Richard T.,Marston, Landon T.,et al. Greenhouse gas emissions from US irrigation pumping and implications for climate-smart irrigation policy[J],2024,15(1).
APA	Driscoll, Avery W.,Conant, Richard T.,Marston, Landon T.,Choi, Eunkyoung,&Mueller, Nathaniel D..(2024).Greenhouse gas emissions from US irrigation pumping and implications for climate-smart irrigation policy.NATURE COMMUNICATIONS,15(1).
MLA	Driscoll, Avery W.,et al."Greenhouse gas emissions from US irrigation pumping and implications for climate-smart irrigation policy".NATURE COMMUNICATIONS 15.1(2024).