气候变化领域集成服务门户(CCPortal): Hysteresis of the intertropical convergence zone to CO2 forcing

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DOI	10.1038/s41558-021-01211-6
	Hysteresis of the intertropical convergence zone to CO2 forcing
	Kug J.-S.; Oh J.-H.; An S.-I.; Yeh S.-W.; Min S.-K.; Son S.-W.; Kam J.; Ham Y.-G.; Shin J.
发表日期	2021
ISSN	1758678X
英文摘要	With the unprecedented rate of global warming in recent decades, whether or not anthropogenic climate change is irreversible is an important question. Based on idealized CO2 ramp-up until 1,468 ppm and symmetric ramp-down model experiments, here we show that the intertropical convergence zone (ITCZ) does not respond linearly to CO2 forcing, but exhibits strong hysteresis behaviour. While the location of the ITCZ changes minimally during the ramp-up period, it moves sharply south as soon as CO2 begins to decrease, and its centre eventually resides in the Southern Hemisphere during the ramp-down period. Such ITCZ hysteresis is associated with delays in global energy exchanges between the tropics and extratropics. The delayed energy exchanges are explained by two distinct hysteresis behaviours of the Atlantic Meridional Overturning Circulation and slower warming/cooling in the Southern Ocean. We also suggest that the ITCZ hysteresis can lead to hysteresis in regional hydrological cycles. © 2021, The Author(s), under exclusive licence to Springer Nature Limited.
语种	英语
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/244414
作者单位	Division of Environmental Science and Engineering, Pohang University of Science and Technology (POSTECH), Pohang, South Korea; Institute for Convergence Research and Education in Advanced Technology, Yonsei University, Seoul, South Korea; Department of Atmospheric Sciences/Irreversible Climate Change Research Center, Yonsei University, Seoul, South Korea; Department of Marine Sciences and Convergence Technology, Hanyang University, ERICA, Ansan, South Korea; School of Earth and Environmental Sciences, Seoul National University, Seoul, South Korea; Department of Oceanography, Chonnam National University, Gwangju, South Korea
推荐引用方式 GB/T 7714	Kug J.-S.,Oh J.-H.,An S.-I.,et al. Hysteresis of the intertropical convergence zone to CO2 forcing[J],2021.
APA	Kug J.-S..,Oh J.-H..,An S.-I..,Yeh S.-W..,Min S.-K..,...&Shin J..(2021).Hysteresis of the intertropical convergence zone to CO2 forcing.Nature Climate Change.
MLA	Kug J.-S.,et al."Hysteresis of the intertropical convergence zone to CO2 forcing".Nature Climate Change (2021).