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Evaluating clouds in CMIP6 models with satellite data and the ESMValTool

Lauer, Axel and Hassler, Birgit and Bock, Lisa (2021) Evaluating clouds in CMIP6 models with satellite data and the ESMValTool. CFMIP 2021 VIRTUAL MEETING on Clouds, Precipitation, Circulation, & Climate Sensitivity, 2021-09-14 - 2021-09-16, virtuell.

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Abstract

Biases in model simulations of present-day climate do not only affect confidence in the models but also raise concerns about the accurate representation of future climate change. In this study we investigate the performance of state-of-the-art global climate models from the sixth phase of the Coupled Model Intercomparison Project (CMIP6) by comparing simulated cloud properties with satellite observations. A focus is the variability of clouds on seasonal and interannual time scales as well as the 3-dimensional distributions of cloud fraction, cloud liquid and cloud ice water content. The analysis includes an investigation of cloud properties by dynamical regime and is performed with the Earth System Model Evaluation Tool (ESMValTool), a community diagnostic and performance metrics tool for the evaluation of Earth System Models. While many long-standing biases in the simulated cloud properties in CMIP6 models persist, first results show, for instance, that the CMIP5 problem of clouds over the Southern Ocean being too reflective ("too few, too bright") is reduced in CMIP6. Comparisons with satellite data also show that the total cloud water for a given total cloud fraction in CMIP6 is in better agreement with observations such as ESACCI-CLOUD compared to CMIP5.

Item URL in elib:https://elib.dlr.de/143968/
Document Type:Conference or Workshop Item (Poster)
Title:Evaluating clouds in CMIP6 models with satellite data and the ESMValTool
Authors:
AuthorsInstitution or Email of AuthorsAuthor's ORCID iDORCID Put Code
Lauer, AxelDLR, IPAhttps://orcid.org/0000-0002-9270-1044UNSPECIFIED
Hassler, BirgitDLR, IPAUNSPECIFIEDUNSPECIFIED
Bock, LisaDLR, IPAhttps://orcid.org/0000-0001-7058-5938UNSPECIFIED
Date:15 September 2021
Refereed publication:No
Open Access:No
Gold Open Access:No
In SCOPUS:No
In ISI Web of Science:No
Status:Published
Keywords:CMIP6, ESMValTool, clouds, satellite observations
Event Title:CFMIP 2021 VIRTUAL MEETING on Clouds, Precipitation, Circulation, & Climate Sensitivity
Event Location:virtuell
Event Type:national Conference
Event Start Date:14 September 2021
Event End Date:16 September 2021
Organizer:CFMIP, WCRP
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Space
HGF - Program Themes:Earth Observation
DLR - Research area:Raumfahrt
DLR - Program:R EO - Earth Observation
DLR - Research theme (Project):R - Atmospheric and climate research
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of Atmospheric Physics > Earth System Model Evaluation and Analysis
Deposited By: Lauer, Axel
Deposited On:15 Sep 2021 16:21
Last Modified:24 Apr 2024 20:43

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