气候变化领域集成服务门户(CCPortal): New Cloud System Metrics to Assess Bulk Ice Cloud Schemes in a GCM

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DOI	10.1029/2019MS001642
	New Cloud System Metrics to Assess Bulk Ice Cloud Schemes in a GCM
	Stubenrauch C.J.; Bonazzola M.; Protopapadaki S.E.; Musat I.
发表日期	2019
ISSN	19422466
起始页码	3212
结束页码	3234
卷号	11 期号:10
英文摘要	Bulk microphysical properties of ice clouds, such as fall speed and ice crystal size distribution, strongly impact the life time and the radiative effects of these clouds. Three coherent bulk ice schemes, with fall speed and effective ice crystal diameter depending on both ice water content and temperature, have been constructed from published parameterizations. We present a novel upper tropospheric cloud system concept to study the impact of these schemes on the LMDZ climate simulations. For this evaluation, cloud data from hyperspectral infrared sounders Atmospheric InfraRed Sounder and IR Atmospheric Sounding Interferometer are used, because they include cirrus with visible optical depths as low as 0.2. The analogous satellite observation simulator, developed for this purpose, is also presented. The cloud system concept, applied to the data and to the simulator outputs, allows a process-oriented evaluation. In general, the new bulk ice schemes lead to a better agreement with the cloud data, in particular concerning the cloud system property distributions and the relation between cloud system properties and proxies mimicking the life stage and the convective depth. Sensitivity studies have demonstrated that both the introduction of the new schemes as well as the necessary adjustment of the relative width of the upper tropospheric subgrid water distribution lead to these improvements. Our studies also suggest to revise the formulation of the latter. © 2019. The Authors.
英文关键词	bulk ice cloud scheme for climate models; Cloud System Metrics for process-oriented diagnostics; IR Sounder cloud observation simulator
语种	英语
scopus关键词	Acoustic devices; Climate models; Clouds; Simulators; Troposphere; Water supply systems; Atmospheric infrared sounders; Atmospheric sounding; Bulk ice; Cloud observations; Microphysical property; Process-oriented; Satellite observations; Water distributions; Ice; cirrus; climate modeling; cloud microphysics; general circulation model; ice crystal; parameterization; sensitivity analysis; simulator; troposphere; water content
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/156849
作者单位	Laboratoire de Météorologie Dynamique/Institut Pierre-Simon Laplace, Sorbonne Université, Ecole Polytechnique, CNRS, Paris, France; COOPETIC, Paris, France
推荐引用方式 GB/T 7714	Stubenrauch C.J.,Bonazzola M.,Protopapadaki S.E.,et al. New Cloud System Metrics to Assess Bulk Ice Cloud Schemes in a GCM[J],2019,11(10).
APA	Stubenrauch C.J.,Bonazzola M.,Protopapadaki S.E.,&Musat I..(2019).New Cloud System Metrics to Assess Bulk Ice Cloud Schemes in a GCM.Journal of Advances in Modeling Earth Systems,11(10).
MLA	Stubenrauch C.J.,et al."New Cloud System Metrics to Assess Bulk Ice Cloud Schemes in a GCM".Journal of Advances in Modeling Earth Systems 11.10(2019).