The CCSM3 Deep Time Climate and Dust Cycle Simulations Isabel2_highmtncami2_4xco2_circ_res and Derivatives

Published: 27-08-2019| Version 2 | DOI: 10.17632/f65d73vw77.2
Nicholas Heavens


I. Top Level Description This dataset archives simulations with Community Climate System Model version 3 (CCSM3), including a climate model simulation of an interglacial interval during the Late Paleozoic Ice Age in which the altitude of the Central Pangaean Mountains has been raised to ~5000 m altitude to enable widespread tropical glaciation, cold, and aridity. But pCO2 was raised from 140 ppmv to 560 ppmv and the orbit was adjusted to a circular orbit to allow deglaciation at high latitudes. Dust source apportionment experiments based on this simulation also are archived. The baseline climate simulation Isabel2_highmtncami2_4xco2_circ_res was run on the cheyenne machine operated by the Computational Information Systems Laboratory (CISL) of the National Center for Atmospheric Research (NCAR) between 20 August 2018 and 8 September 2018. The dust apportionment experiments were run on cheyenne on 30 July 2019. The baseline climate simulation is a hybrid of Isabel1 archived as DOI: 10.17632/fv54b3gp2w.1. More complete documentation is included in the top-level README.TXT References: Rosenbloom, N., C. Shields, E. Brady, S. Levis, and S. Yeager, 2011, Using CCSM3 for Paleoclimate Applications, National Center for Atmospheric Research (Boulder, CO) Technical Note, NCAR/TN-483+STR. Acknowledgments: These simulations made use of CISL-NCAR resources. Their execution and archiving were supported by the National Science Foundation under EAR-1337363.


Steps to reproduce

The simulations were set up by using the commands below in the codebase on the CISL-NCAR machines of the time at: /glade/p/cesm/releases/ccsm3_0_1_beta33 ./create_newcase -case /glade/u/home/heavens/Isabel2_highmtncami2_4xco2_circ_res -mach yellowstone -res T31_gx3v5 -compset B ./create_newcase -case /glade/u/home/heavens/Isabel2_highmtncami2_4xco2_circ_res -mach yellowstone -res T31_gx3v5 -compset B etc.