Clouds CPT All-Hands Meeting II

Talaris Conference Center, Seattle, 21-22 October 2004

Cedar Room

I = invited speaker

Thursday 21 October:

0730-0830 Continental Breakfast, Cedar Foyer

0830-0855 Chris Bretherton (U. Washington):

• Meeting goals and introductory remarks

0855-0920 Minghua Zhang (SUNY):

• On the thermodynamic and dynamic sensitivities of clouds and their link to the cloud feedback problem

0920-0945 (I) Qiang Fu (U Washington):

• Test of GCM cloud and ice microphysical parameterizations using CCCMa SCM with SHEBA data

0945-1010 Matt Wyant and Chris Bretherton (U Washington):

• Bony analysis of the NCAR, GFDL, and GMAO models

1010-1035 Coffee break, Cedar Foyer

1035-1100 (I) Phil Austin (UBC) and Knut von Salzen (CCC):

• Modeling clouds and climate in Canada

1100-1125 Ming Zhao (GFDL CPT Liaison Scientist):

• Diagnostics for GCM single-column outputs

1125-1145 Cecile Hannay (NCAR CPT Liaison Scientist):

• Cloud Diagnostics of Low-Level Clouds in CAM, AM and Observations

1145-1200 Ben Johnson, ASP/NCAR:

• PDF-based cloud parameterization

1200-1300 Buffet Lunch - Pacific Dining Rm. (also at Talaris)

1300-1325 (I) Dennis Hartmann (U Washington):

• Will greenhouse warming affect cloud radiative forcing of tropical convection?

1325-1350 Julio Bacmeister (NASA/GMAO):

• Status and preliminary analysis of the GMAO GEOS-5 AGCM

1350-1415 Kuan-man Xu and Takmeng Wong (NASA/GSFC):

• CERES gridded and cloud object data sets for CPT

1415-1440 Bjorn Stevens (UCLA):

• Interpreting GCM climatologies with mixed layer models

1440-1505 Joel Norris (SIO):

• Observed surface/satellite cloud/radiation trends...where do we believe them?

1505-1530 Coffee break, Cedar Foyer

1530-1555 Robert Pincus (NOAA/CDC):

• Linking diagnostic subgrid-scale variability in clouds and water vapor to convection and radiation

1555-1620 Brian Mapes (U Miami):

• Organized convection parameterization in the framework of generalized subgrid variability

1620-1630 Joao Teixeira (NRL):

• The GCSS Pacific Cross-Section Intercomparison

1620-1730 Discussion

• Should the CPT (possibly in collaboration with GCSS) attempt to develop a group parameterization module for turbulence, moist convection, and clouds (subgrid statistics and microphysics) and implement it in the SCAM?
• Should the CPT develop (perhaps with GCSS) a short summary set of quantitative 'community cloud metrics' (e.g. in the form of a 'Taylor diagram' plotting correlation coefficient and RMS error over the seasonal cycle) which could be used to compare the quality of different GCM simulations of clouds, radiation, and the hydrological cycle?

1800 Group Dinner: Marlai Thai Restaurant

Friday 22 October:

0730-0830 Continental Breakfast, Cedar Foyer

0830-0845 Cara-lyn Lappen (CSU):

• Development of the ADHOC turbulence/shallow convection parameterization

0845-0855 Maike Ahlgrimm (CSU):

• Comparison of GLAS data for clouds and PBL depth with ECMWF forecast model.

0855-0920 Peter Blossey and Chris Bretherton:

• Walker circulation radiative-convective intercomparison - preliminary CRM results.

0920-0945 Isaac Held (GFDL):

• Walker circulation/Radiative-convective equilibrium simulations with the GFDL GCM/SCM.

0945-1010 Marat Khairoutdinov:

• CAM physics as a (under)parameterization of clouds in a cloud-resolving model

1010-1035 Coffee break, Cedar Foyer

1035-1200 Discussion:

• CPT strategy and specific tasks to be accomplished.
• Advisory panel comments.
• Publications.
• How to put ourselves 'on the map' in the next year.
• Scheduling next meeting(s)