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DOI	10.5194/acp-23-1987-2023
	Temperature and cloud condensation nuclei (CCN) sensitivity of orographic precipitation enhanced by a mixed-phase seeder-feeder mechanism: a case study for the 2015 Cumbria flood
	Thomas, Julia; Barrett, Andrew; Hoose, Corinna
发表日期	2023
ISSN	1680-7316
EISSN	1680-7324
起始页码	1987
结束页码	2002
卷号	23 期号:3 页码:16
英文摘要	The formation of orographic precipitation in mixed-phase clouds depends on a complex interplay of processes. This article investigates the microphysical response of orographic precipitation to perturbations of temperature and cloud condensation nuclei (CCN) concentration. A case study for the 2015 Cumbria flood in northern England is performed with sensitivities using a realization of the piggybacking method implemented into a limited-area setup of the Icosahedral Nonhydrostatic (ICON) model. A 6 % K-1 enhancement of precipitation results for the highest altitudes, caused by a mixed-phase seeder-feeder mechanism, i.e. the interplay of melting and accretion. Total 24 h precipitation is found to increase by only 2 % K--1,K- significantly less than the 7 % K-1 increase in atmospheric water vapour. A rain budget analysis reveals that the negative temperature sensitivity of the condensation ratio and the increase in rain evaporation dampen the precipitation enhancement. Decreasing the CCN concentration speeds up the microphysical processing, which leads to an increase in total precipitation. At low CCN concentration the precipitation sensitivity to temperature is systematically smaller. It is shown that the CCN and temperature sensitivities are to a large extent independent (with a +/- 3 % relative error) and additive.
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:000931254500001
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/273537
作者单位	Helmholtz Association; Karlsruhe Institute of Technology
推荐引用方式 GB/T 7714	Thomas, Julia,Barrett, Andrew,Hoose, Corinna. Temperature and cloud condensation nuclei (CCN) sensitivity of orographic precipitation enhanced by a mixed-phase seeder-feeder mechanism: a case study for the 2015 Cumbria flood[J],2023,23(3):16.
APA	Thomas, Julia,Barrett, Andrew,&Hoose, Corinna.(2023).Temperature and cloud condensation nuclei (CCN) sensitivity of orographic precipitation enhanced by a mixed-phase seeder-feeder mechanism: a case study for the 2015 Cumbria flood.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(3),16.
MLA	Thomas, Julia,et al."Temperature and cloud condensation nuclei (CCN) sensitivity of orographic precipitation enhanced by a mixed-phase seeder-feeder mechanism: a case study for the 2015 Cumbria flood".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.3(2023):16.