气候变化领域集成服务门户(CCPortal): The response of stratospheric water vapor to climate change driven by different forcing agents

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DOI	10.5194/acp-20-13267-2020
	The response of stratospheric water vapor to climate change driven by different forcing agents
	Wang X.; Dessler A.E.
发表日期	2020
ISSN	16807316
起始页码	13267
结束页码	13282
卷号	20 期号:21
英文摘要	We investigate the response of stratospheric water vapor (SWV) to different forcing agents within the Precipitation Driver and Response Model Intercomparison Project (PDRMIP) framework. For each model and forcing agent, we break down the SWV response into a slow response, which is coupled to surface temperature changes, and a fast response, which is the response to external forcing but before the sea surface temperatures have responded. Our results show that, for most climate perturbations, the slow SWV response dominates the fast response. The slow SWV response exhibits a similar sensitivity to surface temperature across all climate perturbations. Specifically, the sensitivity is 0.35 ppmv K−1 in the tropical lower stratosphere (TLS), 2.1 ppmv K−1 in the northern hemispheric lowermost stratosphere (LMS), and 0.97 ppmv K−1 in the southern hemispheric LMS. In the TLS, the fast SWV response only dominates the slow SWV response when the forcing agent radiatively heats the cold-point region - for example, black carbon, which directly heats the atmosphere by absorbing solar radiation. The fast SWV response in the TLS is primarily controlled by the fast adjustment of cold-point temperature across all climate perturbations. This control becomes weaker at higher altitudes in the tropics and altitudes below 150 hPa in the LMS. © Author(s) 2020. This work is distributed under the Creative Commons Attribution 4.0 License.
语种	英语
来源期刊	Atmospheric Chemistry and Physics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/143824
作者单位	Department of Atmospheric Sciences, Texas A&M University, College StationTX, United States
推荐引用方式 GB/T 7714	Wang X.,Dessler A.E.. The response of stratospheric water vapor to climate change driven by different forcing agents[J],2020,20(21).
APA	Wang X.,&Dessler A.E..(2020).The response of stratospheric water vapor to climate change driven by different forcing agents.Atmospheric Chemistry and Physics,20(21).
MLA	Wang X.,et al."The response of stratospheric water vapor to climate change driven by different forcing agents".Atmospheric Chemistry and Physics 20.21(2020).