CLIVAR Working Group on Ocean Model Development
CORE IAF.v2 Air Sea Flux Data Set
Version 2 of the Coordinated Ocean-ice Reference Experiments (CORE) datasets used for forcing global ocean-ice models has been released. The interannually varying forcing (CORE IAF.v2) now extends from 1948-2007. Note that the CORE V2 release notes also give some new recommendations for the experimental protocol for the interannual forced CORE-II simulations. The data is available for download from the GDFL server, and is documented in:
Large, W.G. and S.G. Yeager, 2008: The Global Climatology of an Interannually Varying Air Sea Flux Data Set, Climate Dynamics, DOI 10.1007/s00382-008-0441-3, 24pp.
Access CORE II simulations
Two sets of experiments have been archived by NCAR on the Earth System Grid (ESG) for anyone interested to look at and analyze. These experiments have been conducted using the nominal 1 degree horizontal resolution version of the CCSM4 ocean model. Both are forced with the CORE v2 IAF data sets (Large and Yeager, 2008). One is with an active sea-ice model and the other has a data ice model. Currently, the data is from the fourth (last) forcing cycle, but if there is any interest, the other cycles can be provided as well.
Contact Steve Yeager for further information.
CCSM POP run c.b27.01:
1948-2007 CORE2 ocean-only hindcast with nominal 1 degree resolution. Initialized from a state of rest and Levitus T/S. Model years 181-240
correspond to the fourth cycle of 60-year (1948-2007) forcing. Atmospheric state variables are based on the CORE-II protocol. Daily sea ice fraction is prescribed from NSIDC bootstrapv2 satellite data. Monthly climatological river runoff is based on Dai and Trenberth (2002) discharge estimates. A weak salinity restoring (50m/4year) flux is applied globally after subtraction of global mean.
CCSM POP run g.b29.01:
1948-2007 CORE2 ocean-ice hindcast with nominal 1 degree resolution. Initialized from a state of rest and Levitus T/S. Model years 181-240
correspond to the fourth cycle of 60-year (1948-2007) forcing. Atmospheric state variables are based on the CORE-II protocol. A freely-evolving dynamic/thermodynamic sea ice model is used (CICE). Monthly climatological river runoff is based on Dai and Trenberth (2002) discharge estimates. A weak salinity restoring (50m/4year) flux is applied globally after subtraction of global mean.
To access the data from the Earth System Grid archive:
Access requires membership (after registration to the ESG generally) of the group "CCSM4POP". Please follow the ESG-directed instructions.
Initial Results
Some ocean-only simulations have been carried out at NCAR using the CORE IAF.v1 surface forcing. Initial results are presented here (Powerpoint presentation by G. Danabasoglu).
References
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last updated Tue, Aug 10, 2010 by Anna Pirani
