Simulation of the Transient Climate of the Last 21,000 Years (TraCE-21ka)

d651050
| DOI: 10.5065/CXB5-TV56
 
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Abstract:

This TraCE-21ka dataset contains output from the full TraCE simulation from 22,000 years before present (22ka) to 1990 CE as well as single-forcing sensitivity simulations of varying lengths. These results are from a fully-coupled, non-accelerated atmosphere-ocean-sea ice-land surface CCSM3 simulation at the T31_gx3 resolution. For the full TraCE simulation, the model is forced with transient greenhouse gas concentrations and orbitally-driven insolation changes. Transient boundary conditions include the ICE-5G ice sheets - extent and topography, and changing paleogeography as sea level rises from its Last Glacial Maximum low stand to modern levels. We also prescribe a transient scenario of meltwater forcing to the oceans from the retreating ice sheets. Vegetation is prognostic.

The following CCSM3 simulations are available:

[TraCE] full TraCE simulation, with transient forcing changes in greenhouse gases, orbitally-driven insolation variations, ice sheets and meltwater fluxes.

[TraCE-ORB] with only transient orbital forcing, all other forcings and boundary conditions remain at the full TraCE state of 22ka.

[TraCE-GHG] with only transient greenhouse gas forcing, all other forcings and boundary conditions remain at the full TraCE state of 22ka.

[TraCE-ICE] with only changing continental ice sheets, all other forcings and boundary conditions remain at the full TraCE state of 19ka.

[TraCE-MWF] with only transient Northern Hemisphere meltwater fluxes, all other forcings and boundary conditions remain at the full TraCE state of 19ka.

[TraCE-ORB-17ka] with only transient orbital forcing, all other forcings and boundary conditions remain at the full TraCE state of 17ka.

[TraCE-GHG-17ka] with only transient greenhouse gas forcing, all other forcings and boundary conditions remain at the full TraCE state of 17ka.

Acknowledgement:

TraCE-21ka was made possible by the DOE INCITE computing program, and supported by NCAR, the NSF P2C2 program, and the DOE Abrupt Change and EaSM programs.

Variables:
Rain
Data Types:
Grid
Data Contributors:
UCAR/NCAR/CGD
Climate and Global Dynamics Division, National Center for Atmospheric Research, University Corporation for Atmospheric Research
Total Volume:
6.4 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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