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Data · dataset · 2026

Gettelman ECS data

Listed in National Center for Atmospheric Research

The Community Earth System Model Version 2 (CESM2) has a Equilibrium Climate Sensitivity (ECS) of 5.3K.

Description

ECS is an emergent property of both climate feedbacks and aerosol forcing. The increase in ECS over the previous version (CESM1) is the result of cloud feedbacks.

Interim versions of CESM2 had a land model which damped ECS. Part of the ECS change results from evolving the model configuration to reproduce the long term trend of global and regional surface temperature over the 20th century in response to climate forcings. Changes made to reduce sensitivity to aerosols also impacted cloud feedbacks, which significantly influence ECS.

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CESM2 simulations compare very well to observations of present climate. It is critical to understand whether the high ECS, outside the best estimate range of 1.5 to 4.5K, is plausible.

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Catalogue records · 1

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Provenance · 1 source records, 7 field assertions
SourceKeyLast seenRaw
National Center for Atmospheric Research143e30f4-d57c-4053-8979-ca701dc6534513 d agoJSON v1
FieldAssertionExtractorEvidence
concepts[field].local:field:earth-environmentalmapping · data ucar educonnector:data_ucar_edu@1.0.0
concepts[field].local:field:ocean-atmosphericmapping · data ucar educonnector:data_ucar_edu@1.0.0
created_datesource · data ucar educonnector:data_ucar_edu@1.0.0
descriptionsource · data ucar educonnector:data_ucar_edu@1.0.0/notes
publication_datesource · data ucar educonnector:data_ucar_edu@1.0.0
titlesource · data ucar educonnector:data_ucar_edu@1.0.0/title
updated_datesource · data ucar educonnector:data_ucar_edu@1.0.0