气候变化领域集成服务门户(CCPortal): Characteristics of supersaturation in midlatitude cirrus clouds and theiradjacent cloud-free air

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DOI	10.5194/acp-23-3103-2023
	Characteristics of supersaturation in midlatitude cirrus clouds and theiradjacent cloud-free air
	Dekoutsidis, Georgios; Gross, Silke; Wirth, Martin; Kraemer, Martina; Rolf, Christian
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	3103
结束页码	3117
卷号	23 期号:5 页码:15
英文摘要	Water vapor measurements of midlatitude cirrus clouds, obtained by the WAter vapour Lidar Experiment in Space (WALES) lidar system during the Mid-Latitude Cirrus (ML-CIRRUS) airborne campaign, which took place in the spring of 2014 over central Europe and the NE Atlantic Ocean, are combined with model temperatures from the European Centre for Medium-Range Weather Forecasts (ECMWF) and analyzed. Our main focus is to derive the distribution and temporal evolution of humidity with respect to ice within cirrus clouds and in their adjacent cloud-free air. We find that 34.1 % of in-cloud data points are supersaturated with respect to ice. Supersaturation is also detected in 6.8 % of the cloud-free data points. When the probability density of the relative humidity over ice (RHi) is calculated with respect to temperature for the in-cloud data points from the ML-CIRRUS dataset, there are two peaks: one around 225 K and close to saturation, RHi = 100 %, and a second one at colder temperatures around 218 K in subsaturation, RHi = 79 %. These two regions seem to represent two cirrus cloud categories: in situ formed and liquid origin. Regarding their vertical structure, most clouds have higher supersaturations close to the cloud top and become subsaturated near the cloud bottom. Finally, we find that the vertical structure of RHi within the clouds is also indicative of their life stage. RHi skewness tends to go from positive to negative values as the cloud ages. RHi modes are close to saturation in young clouds, supersaturated in mature clouds and subsaturated in dissipating clouds.
学科领域	Environmental Sciences; Meteorology & Atmospheric Sciences
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
WOS记录号	WOS:000946215800001
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/273163
作者单位	Helmholtz Association; German Aerospace Centre (DLR); Helmholtz Association; Research Center Julich; Johannes Gutenberg University of Mainz
推荐引用方式 GB/T 7714	Dekoutsidis, Georgios,Gross, Silke,Wirth, Martin,et al. Characteristics of supersaturation in midlatitude cirrus clouds and theiradjacent cloud-free air[J],2023,23(5):15.
APA	Dekoutsidis, Georgios,Gross, Silke,Wirth, Martin,Kraemer, Martina,&Rolf, Christian.(2023).Characteristics of supersaturation in midlatitude cirrus clouds and theiradjacent cloud-free air.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(5),15.
MLA	Dekoutsidis, Georgios,et al."Characteristics of supersaturation in midlatitude cirrus clouds and theiradjacent cloud-free air".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.5(2023):15.