气候变化领域集成服务门户(CCPortal): Strong remote control of future equatorial warming by off-equatorial forcing

CCPortal

DOI	10.1038/s41558-019-0667-6
	Strong remote control of future equatorial warming by off-equatorial forcing
	Stuecker M.F.; Timmermann A.; Jin F.-F.; Proistosescu C.; Kang S.M.; Kim D.; Yun K.-S.; Chung E.-S.; Chu J.-E.; Bitz C.M.; Armour K.C.; Hayashi M.
发表日期	2020
ISSN	1758678X
卷号	10 期号:2
英文摘要	The tropical climate response to GHG forcing is spatially non-uniform1–3. Even though enhanced equatorial and eastern Pacific warming is simulated by most climate models, the underlying mechanisms—including the relative roles of atmospheric and oceanic feedbacks—remain debated. Here, we use a climate model with idealized CO2-radiative forcing patterns to show that off-equatorial radiative forcing and corresponding coupled circulation/cloud adjustments are responsible for much of equatorial warming in response to global CO2 forcing. For equatorial forcing, the atmosphere responds by enhancing atmospheric heat export to the extra-tropics, an associated strengthening of the ascending Hadley circulation branch and strong negative equatorial cloud feedbacks. These processes together greatly dampen equatorial surface warming. Intensification of the oceanic subtropical cells and increased cold subsurface water upwelling in the eastern tropical Pacific provide an additional negative feedback for surface temperatures. In contrast, applying off-equatorial forcing, the atmosphere responds by exporting less heat from the tropics, Hadley circulation weakening and weaker negative equatorial cloud feedbacks, while the subtropical cells slow down in the ocean. Our results demonstrate a delicate balance in the coupled climate system between remote circulation adjustments and regional feedbacks that create the patterns of future climate change. © 2020, 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/124226
作者单位	Center for Climate Physics, Institute for Basic Science, Busan, South Korea; Pusan National University, Busan, South Korea; Department of Atmospheric Sciences, University of Hawaiʻi at Mānoa, Honolulu, HI, United States; Joint Institute for the Study of the Atmosphere and the Ocean, University of Washington, Seattle, WA, United States; School of Urban and Environmental Engineering, Ulsan National Institute of Science and Technology, Ulsan, South Korea; Department of Atmospheric Sciences, University of Washington, Seattle, WA, United States; School of Oceanography, University of Washington, Seattle, WA, United States
推荐引用方式 GB/T 7714	Stuecker M.F.,Timmermann A.,Jin F.-F.,et al. Strong remote control of future equatorial warming by off-equatorial forcing[J],2020,10(2).
APA	Stuecker M.F..,Timmermann A..,Jin F.-F..,Proistosescu C..,Kang S.M..,...&Hayashi M..(2020).Strong remote control of future equatorial warming by off-equatorial forcing.Nature Climate Change,10(2).
MLA	Stuecker M.F.,et al."Strong remote control of future equatorial warming by off-equatorial forcing".Nature Climate Change 10.2(2020).