气候变化领域集成服务门户(CCPortal): Quantifying the Impact of Wind and Surface Humidity-Induced Surface Heat Exchange on the Circulation Shift in Response to Increased CO2

CCPortal

DOI	10.1029/2020GL088053
	Quantifying the Impact of Wind and Surface Humidity-Induced Surface Heat Exchange on the Circulation Shift in Response to Increased CO2
	Tan Z.; Shaw T.A.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:18
英文摘要	We extend the locking technique to separate the poleward shift of the atmospheric circulation in response to quadrupled CO2 into contributions from (1) CO2 increase, (2) cloud radiative effects, and (3) wind and surface humidity-induced surface heat exchange. In aquaplanet simulations, wind and surface humidity-induced surface heat exchange accounts for 30–60% of the Hadley cell edge and midlatitude eddy-driven jet shift. The increase of surface specific humidity dominates and mostly follows global mean warming. Consistent with previous work the remaining shift is attributed to cloud radiative effects. Across CMIP5 models the intermodel variance in the austral winter circulation shift in response to quadrupled CO2 is significantly correlated with the response of the subtropical-subpolar difference of surface heat exchange. The results highlight the dominant role of surface heat exchange for future circulation changes. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Carbon dioxide; Heat exchangers; Atmospheric circulation; Circulation changes; Cloud radiative effects; Global mean warming; Locking technique; Poleward shift; Specific humidity; Surface humidity; Atmospheric humidity; air-sea interaction; atmospheric circulation; carbon dioxide; cloud radiative forcing; CMIP; Hadley cell; heat flow; humidity; jet flow
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/169757
作者单位	Department of the Geophysical Sciences, University of Chicago, Chicago, IL, United States; Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ, United States
推荐引用方式 GB/T 7714	Tan Z.,Shaw T.A.. Quantifying the Impact of Wind and Surface Humidity-Induced Surface Heat Exchange on the Circulation Shift in Response to Increased CO2[J],2020,47(18).
APA	Tan Z.,&Shaw T.A..(2020).Quantifying the Impact of Wind and Surface Humidity-Induced Surface Heat Exchange on the Circulation Shift in Response to Increased CO2.Geophysical Research Letters,47(18).
MLA	Tan Z.,et al."Quantifying the Impact of Wind and Surface Humidity-Induced Surface Heat Exchange on the Circulation Shift in Response to Increased CO2".Geophysical Research Letters 47.18(2020).