气候变化领域集成服务门户(CCPortal): Ratcheting of climate pledges needed to limit peak global warming

CCPortal

DOI	10.1038/s41558-022-01508-0
	Ratcheting of climate pledges needed to limit peak global warming
	Iyer, Gokul; Ou, Yang; Edmonds, James; Fawcett, Allen A.; Hultman, Nathan; McFarland, James; Fuhrman, Jay; Waldhoff, Stephanie; McJeon, Haewon
发表日期	2022
ISSN	1758-678X
EISSN	1758-6798
起始页码	1129
结束页码	+
卷号	12 期号:12 页码:10
英文摘要	The new and updated emission reduction pledges submitted by countries ahead of the Twenty-Sixth Conference of Parties represent a meaningful strengthening of global ambition compared to the 2015 Paris pledges. Yet, limiting global warming below 1.5 degrees C this century will require countries to ratchet ambition for 2030 and beyond. Here, we explore a suite of emissions pathways to show that ratcheting near-term ambition through 2030 will be crucial to limiting peak temperature changes. Delaying ratcheting ambition to beyond 2030 could still deliver end-of-century temperature change of less than 1.5 degrees C but would result in higher temperature overshoot over many decades with the potential for adverse consequences. Ratcheting near-term ambition would also deliver benefits from enhanced non-CO2 mitigation and facilitate faster transitions to net-zero emissions systems in major economies. Many countries have submitted updated and new emissions reduction pledges in COP26, but further ratcheting of pledges is needed to reach the 1.5 degrees C goal. Ratcheting near-term ambition through 2030 could bring the largest climate benefits and avoid potential long-term temperature overshoot.
学科领域	Environmental Sciences; Environmental Studies; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000881686300004
来源期刊	NATURE CLIMATE CHANGE
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/274222
作者单位	United States Department of Energy (DOE); Pacific Northwest National Laboratory; University System of Maryland; University of Maryland College Park; United States Environmental Protection Agency; University System of Maryland; University of Maryland College Park
推荐引用方式 GB/T 7714	Iyer, Gokul,Ou, Yang,Edmonds, James,et al. Ratcheting of climate pledges needed to limit peak global warming[J],2022,12(12):10.
APA	Iyer, Gokul.,Ou, Yang.,Edmonds, James.,Fawcett, Allen A..,Hultman, Nathan.,...&McJeon, Haewon.(2022).Ratcheting of climate pledges needed to limit peak global warming.NATURE CLIMATE CHANGE,12(12),10.
MLA	Iyer, Gokul,et al."Ratcheting of climate pledges needed to limit peak global warming".NATURE CLIMATE CHANGE 12.12(2022):10.