1. GFDL-NCAR/CCSM collaborations
ongoing:
Oceanic: 2 Climate Process Teams
Atmospheric: Joint discussion group to be
re-established – meeting in May at GFDL
Both models contributing ~1/2 degree
time-slice simulations to NARCCAP

2. 200 km
50 km
Annual mean precipitation: N. America and Europe

3. Other possible collaborations:
Finite volume dynamical core:
Cubed sphere version with non-hydrostatic option now in final stages of development, scalability studies underway –
-- 200,100, and 50 km versions for coupling
-- 20 km focused on tropical cyclone
climatology, variability, sensitivity,

4. Are bilateral discussions/intercomparison
useful in other areas?
Aerosol modeling?
Land surface vegetation feedbacks?
Other Earth System Model components?

5. model observations Hurricane count year Downscaling model
18km horizontal resolution over domain shown; no convective parameterization
Knutson, Garner,
Sirutis, Held, Tuleya
submitted to
Bulletin of the American Meteorological Society
model
observations
Hurricane count
year

6. 10 m wind speed
OLR