气候变化领域集成服务门户(CCPortal): On the Causal Relationship Between the Moist Diabatic Circulation and Cloud Rapid Adjustment to Increasing CO2

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DOI	10.1029/2019MS001853
	On the Causal Relationship Between the Moist Diabatic Circulation and Cloud Rapid Adjustment to Increasing CO2
	Dinh T.; Fueglistaler S.
发表日期	2019
ISSN	19422466
起始页码	3836
结束页码	3851
卷号	11 期号:11
英文摘要	General circulation models predict that clouds in the atmosphere rapidly adjust to the radiative perturbation of an abrupt increase in atmospheric CO2 concentration on a short time scale of about 10 days. This rapid adjustment consists of an increase of clouds in the boundary layer and a decrease of clouds in the free troposphere. Our focus is the mechanism for the decrease of clouds in the free troposphere, which is the dominating component of cloud rapid adjustment in most general circulation models. We propose that the decrease in clouds in the free troposphere arises from the causal relationship between the moist diabatic circulation and the production of condensates that forms clouds in moist processes. As CO2 concentration increases, tropospheric radiative cooling is reduced, resulting in weakening of the moist diabatic circulation and a decrease in precipitation. As the hydrologic cycle weakens and the moist processes involving phase change of water vapor to form the condensates in the atmosphere lessen, the mass of cloud condensates decreases. This decrease in cloud condensates can be predicted from the decrease in the radiative subsidence mass flux, which is a metric for the strength of the moist diabatic circulation in the free troposphere. ©2019. The Authors.
英文关键词	circulation; clouds; hydrologic cycle; precipitation; radiative forcing; rapid adjustment
语种	英语
scopus关键词	Atmospheric radiation; Boiler circulation; Boundary layers; Carbon dioxide; Climate models; Clouds; Hydrology; Precipitation (chemical); Radiative Cooling; Troposphere; Causal relationships; CO2 concentration; Free troposphere; General circulation model; Hydrologic cycles; Radiative forcings; Radiative perturbation; rapid adjustment; Precipitation (meteorology); atmospheric circulation; boundary layer; cloud; diabatic process; general circulation model; hydrological cycle; perturbation; precipitation (climatology); radiative forcing; troposphere
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156822
作者单位	Department of Physics, University of Auckland, Auckland, New Zealand; Program in Atmospheric and Oceanic Sciences, Princeton University, Princeton, NJ, United States; Department of Geosciences, Princeton University, Princeton, NJ, United States
推荐引用方式 GB/T 7714	Dinh T.,Fueglistaler S.. On the Causal Relationship Between the Moist Diabatic Circulation and Cloud Rapid Adjustment to Increasing CO2[J],2019,11(11).
APA	Dinh T.,&Fueglistaler S..(2019).On the Causal Relationship Between the Moist Diabatic Circulation and Cloud Rapid Adjustment to Increasing CO2.Journal of Advances in Modeling Earth Systems,11(11).
MLA	Dinh T.,et al."On the Causal Relationship Between the Moist Diabatic Circulation and Cloud Rapid Adjustment to Increasing CO2".Journal of Advances in Modeling Earth Systems 11.11(2019).