气候变化领域集成服务门户(CCPortal): Improved Representation of Clouds in the Atmospheric Component LMDZ6A of the IPSL-CM6A Earth System Model

CCPortal

DOI	10.1029/2020MS002046
	Improved Representation of Clouds in the Atmospheric Component LMDZ6A of the IPSL-CM6A Earth System Model
	Madeleine J.-B.; Hourdin F.; Grandpeix J.-Y.; Rio C.; Dufresne J.-L.; Vignon E.; Boucher O.; Konsta D.; Cheruy F.; Musat I.; Idelkadi A.; Fairhead L.; Millour E.; Lefebvre M.-P.; Mellul L.; Rochetin N.; Lemonnier F.; Touzé-Peiffer L.; Bonazzola M.
发表日期	2020
ISSN	19422466
卷号	12 期号:10
英文摘要	The cloud parameterizations of the LMDZ6A climate model (the atmospheric component of the IPSL-CM6 Earth system model) are entirely described, and the global cloud distribution and cloud radiative effects are evaluated against the CALIPSO-CloudSat and CERES observations. The cloud parameterizations in recent versions of LMDZ favor an object-oriented approach for convection, with two distinct parameterizations for shallow and deep convection and a coupling between convection and cloud description through the specification of the subgrid-scale distribution of water. Compared to the previous version of the model (LMDZ5A), LMDZ6A better represents the low-level cloud distribution in the tropical belt, and low-level cloud reflectance and cover are closer to the PARASOL and CALIPSO-GOCCP observations. Mid-level clouds, which were mostly missing in LMDZ5A, are now better represented globally. The distribution of cloud liquid and ice in mixed-phase clouds is also in better agreement with the observations. Among identified deficiencies, low-level cloud covers are too high in mid-latitude to high-latitude regions, and high-level cloud covers are biased low globally. However, the cloud global distribution is significantly improved, and progress has been made in the tuning of the model, resulting in a radiative balance in close agreement with the CERES observations. Improved tuning also revealed structural biases in LMDZ6A, which are currently being addressed through a series of new physical and radiative parameterizations for the next version of LMDZ. ©2020. The Authors.
英文关键词	climate model tuning; cloud radiative effect; CMIP6; global climate model; mixed-phase clouds; subgrid-scale parameterization
语种	英语
scopus关键词	Earth (planet); Parameterization; Atmospheric components; Cloud parameterizations; Cloud radiative effects; Earth system model; Global distribution; High-latitude regions; Low-level cloud covers; Object oriented approach; Climate models; atmospheric convection; CALIPSO; climate modeling; cloud cover; cloud radiative forcing; CloudSat; observational method; PARASOL
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/156615
作者单位	Sorbonne Université, Laboratoire de Météorologie Dynamique/Institut Pierre-Simon Laplace, Centre National de la Recherche Scientifique, École Polytechnique, École Normale Supérieure, PSL Université, Institut Polytechnique de Paris, Campus Pierre et Marie Curie, Paris, France; Centre national des recherches météorologiques, Université de Toulouse, Météo-France, CNRS, Toulouse, France; Environmental Remote Sensing Laboratory (LTE), École Polytechnique Fédérale de Lausanne, Lausanne, Switzerland; Institut Pierre-Simon Laplace, Sorbonne Université/CNRS, Paris, France; Laboratory of Climatology and Atmospheric Environment, National and Kapodistrian University of Athens, Athens, Greece
推荐引用方式 GB/T 7714	Madeleine J.-B.,Hourdin F.,Grandpeix J.-Y.,et al. Improved Representation of Clouds in the Atmospheric Component LMDZ6A of the IPSL-CM6A Earth System Model[J],2020,12(10).
APA	Madeleine J.-B..,Hourdin F..,Grandpeix J.-Y..,Rio C..,Dufresne J.-L..,...&Bonazzola M..(2020).Improved Representation of Clouds in the Atmospheric Component LMDZ6A of the IPSL-CM6A Earth System Model.Journal of Advances in Modeling Earth Systems,12(10).
MLA	Madeleine J.-B.,et al."Improved Representation of Clouds in the Atmospheric Component LMDZ6A of the IPSL-CM6A Earth System Model".Journal of Advances in Modeling Earth Systems 12.10(2020).