Atmospheric Model Development Activities from Decadal Prediction LDRD
and Early High-Resolution CCSM4 development work
Oak Ridge National Laboratory, with many other collaborators
Project Members working on the plots below: Kave Evans, Jim Hack, John Truesdale, Trey White, John Drake, Julie Caron
Preparatory T85 runs for tuning and model development in CCSM4
4 year T85 preindustrial run to tune with subcycling and new spun up land file year 32 For this run: rhminh=0.68, rhminl=0.90 and icrit=2e-4 to match FV
3 year T85 preindustrial run to tune with subcycling and new spun up land file year 29 For this run: rhminh=0.60, rhminl=0.915
5 year T85 preindustrial run to tune with subcycling and new spun up land file year 22 For this run: rhminh=0.68, rhminl=0.905.
14 year T85 preindustrial run versus obs, same tuning as below
9 year T85 preindustrial run versus FV 1 degree tunings as below
4 year T85 preindustrial run versus corresponding 5 FV 1 degree run. T85 settings: rhminl=0.915, rhminh=0.68, Both: 1 degree aerosol dataset
5 year T85 preindustrial run versus corresponding 5 FV 1 degree run. T85 settings: rhminl=0.915, rhminh=0.72, Both: 1 degree aerosol dataset
3 year T85 preindustrial run versus corresponding 8 FV 1 degree run. T85 settings: rhminl=0.92, rhminh=0.68, Both: 1 degree aerosol dataset
8 year T85 preindustrial run versus corresponding FV 1 degree run. T85: rhminl=0.92, rhminh=0.68, using 'clim' ocean data, Both: 1 degree aerosol dataset
Experiments using track 1 CAM configuration version 3.6.55 with several backported CAM 4 bug fixes
and performance enhancements
CAM3.9 T341 with 1 degree aerosol datasets (no vert emissions)
T341 Preindustrial 1 year test run versus obs This run was spun up two full years, but still is approaching E balance. Also, took out readgau mods. Uses 2 degree temporally varying aerosol datasets.
T341 Preindustrial 1 year test run. This initial run was performed to compare original FV 2 degree aerosol datasets with newly created FV 1 degree datasets using new emissions information and model runs below. These have some energy balance issues to iron out.
Experiments using track 1 CAM configuration version 3.6.55 as above
CAM T341 Tuning Runs
T341 preindustrial tuning run versus obs
T341 preindustrial tuning run track1 versus cam3.5
Experiments with different prescribed aerosol dataets
Tuning a 37~km CAM 3_5_55 simulations for use with eventual high resolution aerosol datasets
T341 preindustrial (1 year with 1 yr spin up)
T341, 1991 without Pinatubo (strat aerosols) (1 yr)
T341, 1991 with-without Pinatubo (strat aerosols) (1 yr)
Recent analysis of 'ringing' features in recent T341 testing runs indicate that the convection is driving omega.
Previous experiments to generate aerosol files at 1 degree resolutions, for use in the T341 runs
1851-2 (Preind) versus 1961-2, with 1 yr spin up of each with AEROD_v, using older aerosol datasets w/o OC/BC split
1852-1860 (Preind) versus 1962-1970, with 2 yr spin up of each, using older aerosol dataset w/o OC/BC split
FV 0.9x1.25 1 yr comparison during (1991) and after Pinatubo (1993) This is a comparison of two years of prognostic aerosol dataset generation runs to assess the affect of trop aerosols in the presence of stratospheric aerosols (Pinatubo). 1 year spin up.
FV 0.9x1.25 8 yr comparison 2001-2009 This is a comparison of preindustrial and cyclical present day simulations with new updated aerosol emissions, and has been designed to evaluate the quality of the aerosol emissions datsets recently created. 1 year spin up.
FV 0.9x1.25 preindustrial 9 yr 1851-1860 (with 1 year 1850 spin up) This is compared to obs and with new dust file as of 10/5/09
FV 0.9x1.25 preindustrial 1851 (with 1 year (1850) spin up)
For Additional Information:
1 Bethel Valley Road
P.O. Box 2008, MS 6016
Bldg. 5600, C315
Oak Ridge, Tennessee 37831-6015
Phone: (865) 576-6517
Fax: (865) 576-5491
Email: evanskj at ornl dot gov