edu.ucar.opensky::technotes:167 UCAR/NCAR - Library OpenSky Support PO Box 3000 Boulder CO 80307-3000 opensky@ucar.edu http://opensky.ucar.edu/ homepage pointOfContact 2025-12-26T16:49:02.319547 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) https://n2t.org/ark:/85065/d7v987fr Comparison of NCAR Community Climate Model (CCM) Climates 1993-01-01T00:00:00Z publication https://n2t.org/ark:/85065/d7v987fr https://doi.org/10.5065/D6TB14V2 Hurrell, J. author Hack, J. author Baumhefner, D. author UCAR/NCAR - Library publisher The purpose of this project is to establish the climate record of four versions of the National Center for Atmospheric Research (NCAR) Community Climate Model (CCM). All four versions of the CCM are described in detail in Section 2. This study documents and compares the mean January and July climates of CSCO2, GENESIS, and standard versions of CCM1 and CCM2. It is the purpose of this report to compare the simulated climates of four versions of the model. These include two standard or frozen versions, CCM1 (Williamson et al. 1987) and CCM2 (Hack et al. 1993), and two research versions, the Global Environmental and Ecological Simulation of Interactive Systems (GENESIS) model (Thompson et al. 1987) and the Climate Sensitivity and Carbon Dioxide (CSC02) model (Washington and Meehl 1993). This report presents a comparison of four different versions of the CCM. The motivation was not only to validate the CCM versions, and thereby document common strengths and deficiencies as well as evolutionary improvements, but also to provide a benchmark against which future model versions can be measured. 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 Atmospheric water vapor Validation Upper level winds Sea level pressure Solar radiation Precipitation amount Outgoing longwave radiation Cloud fraction Geopotential height Upper air temperature Atmospheric general circulation models Wind dynamics theme U.S. National Aeronautics and Space Administration Global Change Master Directory GCMD 2021-09-17 revision 11.2 NASA Global Change Master Directory originator Valids List: Science and Services Keywords Copyright Author(s). This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License. None eng geoscientificInformation