气候变化领域集成服务门户(CCPortal): The Cause of Negative CO2 Forcing at the Top-Of-Atmosphere: The Role of Stratospheric Versus Tropospheric Temperature Inversions

CCPortal

DOI	10.1029/2023GL106433
	The Cause of Negative CO2 Forcing at the Top-Of-Atmosphere: The Role of Stratospheric Versus Tropospheric Temperature Inversions
	Chen, Yan-Ting; Merlis, Timothy M.; Huang, Yi
发表日期	2024
ISSN	0094-8276
EISSN	1944-8007
起始页码	51
结束页码	1
卷号	51 期号:1
英文摘要	Increasing carbon dioxide (CO2) in the atmosphere usually reduces Earth's outgoing longwave radiation (OLR). The unusual case of Antarctica, where CO2 enhances OLR and implies a negative forcing, has previously been explained by the strong near-surface inversion or extremely low surface temperature. However, negative forcing can occasionally be found in the Arctic and tropics where neither of these explanations applies. Here, we examine the changes in infrared opacity from CO2 doubling in these low or negative forcing climate states, which shows the predominant role of the stratospheric contribution to the broadband forcing. Negative forcing in today's climate demands a combination of strong negative forcing caused by a steep stratospheric temperature inversion and a weaker positive forcing in the atmospheric window, which can be caused by a low surface temperature or a strong high cloud masking effect. Contrary to conventional wisdom, the near-surface inversion has little impact on the forcing.
英文关键词	radiative forcing; greenhouse gases; energy budget; climate change
语种	英语
WOS研究方向	Geology
WOS类目	Geosciences, Multidisciplinary
WOS记录号	WOS:001136424200001
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/292122
作者单位	McGill University; National Oceanic Atmospheric Admin (NOAA) - USA; Princeton University
推荐引用方式 GB/T 7714	Chen, Yan-Ting,Merlis, Timothy M.,Huang, Yi. The Cause of Negative CO2 Forcing at the Top-Of-Atmosphere: The Role of Stratospheric Versus Tropospheric Temperature Inversions[J],2024,51(1).
APA	Chen, Yan-Ting,Merlis, Timothy M.,&Huang, Yi.(2024).The Cause of Negative CO2 Forcing at the Top-Of-Atmosphere: The Role of Stratospheric Versus Tropospheric Temperature Inversions.GEOPHYSICAL RESEARCH LETTERS,51(1).
MLA	Chen, Yan-Ting,et al."The Cause of Negative CO2 Forcing at the Top-Of-Atmosphere: The Role of Stratospheric Versus Tropospheric Temperature Inversions".GEOPHYSICAL RESEARCH LETTERS 51.1(2024).