Forecast runs: EPIC 2001 stratocumulus study

EPIC observations- Oct 16-21, 2001- WHO buoy: 20S-85W

Forecast runs- CAM 26L- CAM 60L- CAM-UW 30L- CAM-UW 60L

- Resolution: T42- Timestep:20 min (26/30L)

10 min (60L)

WHO Buoy

Vertical resolution: 26, 30, 60 levels

Standard CAM UW-CAM 60 levels

Column state: observations versus ERA40

ERA40: PBL too shallow, too cold and too wet

Other candidates to initialize the column state

NCEP operational analysis ?

Observations

ERA40

NCEP

Interpolation to CAM3 grid

• Advantages: Observations

Native grid

60 levels

26 levels

5-day evolution of THETA

5-day evolution of Q

5-day evolution of PBLH

5-day evolution of LHFLX

5-day evolution of SHFLX

5-day evolution of CLOUD

5-day LWP

5-day PRECT