edu.ucar.opensky::articles:22792 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-25T15:29:07.968709 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7222xw1 https://doi.org/10.26024/zrad-5z41 https Related Dataset #1 High Climate Sensitivity in the Community Earth System Model version 2 (CESM2) High climate sensitivity in the Community Earth System Model Version 2 (CESM2) 2019-07-28T00:00:00Z publication https://n2t.org/ark:/85065/d7222xw1 https://doi.org/10.1029/2019GL083978 Gettelman, Andrew author Hannay, Cecile E. author Bacmeister, Julio author Neale, Richard author Pendergrass, Angeline author Danabasoglu, Gokhan author Lamarque, Jean-François author Fasullo, John T. author Bailey, David A. author Lawrence, David M. author Mills, Michael J. author UCAR/NCAR - Library publisher The Community Earth System Model Version 2 (CESM2) has an equilibrium climate sensitivity (ECS) of 5.3K. 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 that 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 twentieth century in response to climate forcings. Changes made to reduce sensitivity to aerosols also impacted cloud feedbacks, which significantly influence ECS. 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 1.5-4.5K, is plausible. UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact PDF Text theme Resource Type 2016-01-01T00:00:00Z publication Copyright 2019 American Geophysical Union. None eng geoscientificInformation