Prediction of the Earth System after Major Volcanic Eruptions

Oak Ridge National Laboratory LDRD project, Climate Change Initiative

Project Description


Project Members: Kave Evans, Jim Rosinski, Pat Worley, John Drake, Lianhong Gu

Additional Collaborators: Jim Hack, John Truesdale, Julie Caron, J.-F. Lamarque









Animation of preindustrial run T341 CAM3.5. Precipitable water every 3 hours for December-January (clicking the picture will download the 16MB movie):




CAM3.9 T341 with new aerosol datasets

Experiments using track 1 CAM configuration version 3.6.55 with several backported CAM 4 bug fixes and performance enhancements

NEW 1/26/09 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.


CAM T341 Tuning Runs

Experiments using track 1 CAM configuration version 3.6.55 as above

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.


CAM FV Prognostic Aerosol File Runs

Experiments to generate aerosol files at 1 degree resolutions, for use in the T341 runs

NEW 1/28/10 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:

Kate Evans, PI
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

"Climate change involves complicated science."

- President George W. Bush, April 16, 2008