气候变化领域集成服务门户(CCPortal): Controls on the Tropical Response to Abrupt Climate Changes

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DOI	10.1029/2020GL087518
	Controls on the Tropical Response to Abrupt Climate Changes
	Roberts W.H.G.; Hopcroft P.O.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:6
英文摘要	Abrupt climate change events during glacial times have distinct tropical imprints, despite their cause being at high latitudes. The mechanisms by which high latitudes affect low latitudes are currently unclear. We present climate model simulations of a set of different abrupt events and find changes in tropical rainfall can not be comprehensively explained by either changes in sea ice extent or ocean circulation. Changes in tropical meridional temperature gradients are the clearest way to explain tropical rainfall changes across all events. We find some tropical regions are unlikely to record Heinrich events because the rainfall is moved far enough away from them during stadial periods that they are insensitive to further change. Greenland temperature responds linearly to Atlantic sea ice extent, suggesting that the absence of change in Greenland temperature during Heinrich events implies no sea ice expansion, despite major changes in the climate system elsewhere. ©2020. The Authors.
英文关键词	Climate models; Rain; Sea ice; Tropics; Abrupt climate change; Climate model simulations; ITCZ; Meridional temperature gradient; Ocean circulation; Paleoclimates; Teleconnections; Tropical response; Climate change; climate change; climate modeling; glacial environment; Heinrich event; intertropical convergence zone; latitudinal gradient; meridional circulation; paleoclimate; rainfall; simulation; teleconnection; temperature gradient; tropical environment; Arctic; Greenland
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/170569
作者单位	Department of Geography and Environmental Science, Northumbria University, Newcastle upon Tyne, United Kingdom; BRIDGE, School of Geographical Sciences, University of Bristol, Bristol, United Kingdom; Geography, Earth and Environmental Sciences, University of Birmingham, Birmingham, United Kingdom
推荐引用方式 GB/T 7714	Roberts W.H.G.,Hopcroft P.O.. Controls on the Tropical Response to Abrupt Climate Changes[J],2020,47(6).
APA	Roberts W.H.G.,&Hopcroft P.O..(2020).Controls on the Tropical Response to Abrupt Climate Changes.Geophysical Research Letters,47(6).
MLA	Roberts W.H.G.,et al."Controls on the Tropical Response to Abrupt Climate Changes".Geophysical Research Letters 47.6(2020).