CESM2-CISM2 Transient Last Interglacial Simulations

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Abstract:

The Transient Last Interglacial dataset contains output from the TransientLIG simulation from 127,000 to 119,000 years before present (127 - 119 ka). This simulation is with the CESM2.1 at the FV1_gx1v6 resolution coupled to CISM2 at 4 km resolution for Greenland. The ice sheet model and the orbital parameters over time (eccentricity, obliquity, and precession) are accelerated - advancing 5 years for each CESM2 year. In CAM6, the surface elevation over Greenland is updated every 10 atmosphere years. Offline coupling of BIOME4 distributions every 500 ice-sheet years allows for incorporation of quasi-dynamic vegetation changes [U.S. Geological Survey data release, https://doi.org/10.5066/P9RPB5KD]. All other forcings (GHGs, aerosols, land-ocean configuration) are kept constant during the TransientLIG simulation.

The dataset also includes a sensitivity simulation (NoBiome) from 127 - 121 ka illustrating the effects of vegetation. This simulation retains the preindustrial no-Anthro vegetation distribution adopted in the CMIP6-PMIP4 127 ka and 6ka equilibrium simulations with CESM2.1 at the FV1_gx1v6 resolution.

The TransientLIG and NoBiome simulations are initialized from the CMIP6-PMIP4 lig127ka simulation with CESM2 [http://doi.org/10.22033/ESGF/CMIP6.7673]. The simulations adopted the initial state of the GrIS from the CESM2-CISM2 JG/BG spinup under pre-industrial climate forcing [https://doi.org/10.26024/4gt3-9r10].

Variables:
Latent Heat Flux Rain Sea Level Pressure Specific Humidity
Surface Temperature Upper Air Temperature U/V Wind Components Vertical Wind Velocity/Speed
Vertical Levels:
See the detailed metadata for level information.
Data Types:
Grid ,  Model Simulation
Data Contributors:
UCAR/NCAR/CGD
Climate and Global Dynamics Division, National Center for Atmospheric Research, University Corporation for Atmospheric Research
Publications:
Sommers, A. N., B. L. Otto-Bliesner, W. H. Lipscomb, M. Lofverstrom, S. L. Shafer, P. J. Bartlein, E. C. Brady, E. Kluzek, G. Leguy, K. Thayer-Calder, and R. A. Tomas, 2021: Retreat and Regrowth of the Greenland Ice Sheet During the Last Interglacial as Simulated by the CESM2-CISM2 Coupled Climate–Ice Sheet Model. Paleoceanogr Paleoclimatol, 36, e2021PA004272 (DOI: 10.1029/2021PA004272).
Total Volume:
94.49 TB (Entire dataset) Volume details by dataset product
Data Formats:
netCDF
Metadata Record:
Data License:
Data LicenseThis work is licensed under a Creative Commons Attribution 4.0 International License.
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