CCSM Chemistry-Climate Model Working Group Meeting
22-24 March 2006
NCAR, Boulder, Colorado


Wednesday, 22 March 2006 (Main Seminar Room)


8:00 a.m.  Continental Breakfast


8:30 a.m.  Short introductions for people joining from Chemistry-Climate Working Group


8:45-10:30 a.m. Microphysics Session

 - Summary of the November 2005 Microphysics Workshop (Gettelman)

 - Progress in implementing detailed microphysics in CAM3:  Scheme description and single column model tests (Morrison)

 - First global tests and timing (Neale/Gettelman)

 - Next Steps and plans for coupling with other model components: Radiation, convection, aerosols

 - Discussion


10:30-10:45 a.m. Break


10:45-11:45 a.m. Scavenging

 - Lead-210 and beryllium-7 simulations with the new GFDL global atmosphere model AM2 (H. Liu)

 - Discussion: (Possible discussion points:  How do we represent scavenging in light of the microphysics/convection parameterizations? Do the microphysics and convective parameterizations include the necessary complexity to formulate the scavenging?  Should convective scavenging be handled within the convective parameterization?)


11:45-1:00 p.m. Lunch 


1:00-2:30 pm  Aerosols

   - Current status of aerosol scheme (Rasch)
- Updates to Aerosol Package in MOZART (Lamarque)

   - Proposed aerosol treatment for CAM4 (Ghan)

   - SOA in CAM (Heald)

   - An interactive aerosol-climate model based on CAM/CCSM:  Current progress and challenging issues (Wang)

   - Adopting CARMA to CAM (Toon)

   - White paper on aerosols (Ghan)


2:30-2:45 pm  Break


2:45-4:00 p.m. Aerosol Discussion (Possible discussion points: Discussion of White Paper, indirect effect in light of the microphysics schemes, simple vs. complex aerosol schemes; how to treat chemistry and oxidants; representation of SOAs and Ammonia nitrate aerosols with simple chemistry; internally versus externally mixed aerosols; proposed experiments and future development.)


4:00-5:00 pm.   Discussion: Other issues in common to the Atmosphere and Chemistry-Climate Working Groups (Possible discussion points: chemistry as a diagnostic for CAM, boundary layer venting, convection, cooperative projects between the working groups.)

Thursday, 23 March 2006 (Damon Room)

8:00 a.m.                     Continental Breakfast


8:30-10:30 a.m.           Introduction and focus of working group  (Collins)

8:30-10:30 a.m.           Meeting Goals (Hess)

Current status of the development versions of chemistry within CAM, presentation of the deadlines and schedules required to produce the next generation model, responsibilities and focus of the working group.  



10:30-10:50 a.m.         Break


10:50-12:00 p.m.         Simplified chemical mechanisms

                        - Presentation (Lamarque)

                        - SciDAC Fast Chemical Mechanism (Cameron-Smith)

                        - Discussion (Possible discussion points: Do we need simplified chemistry for the stratosphere? Do we need to consider further refinement in these schemes? To what extent should the working group promote these simplified schemes?)


12:00-1:30 p.m.           Lunch


1:30-2:30 p.m.             Interactions with the biosphere – presentations

                        - Newest plans for biogenic emissions (Guenther)

                        - Ozone and Vegetation (Hess)

                        - Interaction of ozone/nitrogen on the biosphere and speciated N emissions (Thornton)  

                        - Interactions with biogeochemistry (Mahowald)  
                        - Dust in CAM (Yoshioka)

                        - Fires in the CCSM (Mahowald)


2:30-2:50 p.m.             Break


2:50-4:00 p.m.             Interactions with the biosphere - discussion

                        - Discussion (Possible discussion points: Can biogeochemical feedbacks be treated with simple chemistry? Does it make sense to include nitrogen fertilization without including ozone-plant interactions? The impact of fire)


4:00-5:00 p.m.             Air Quality

                        - Presentation of White Paper (Hess)

                        - Effect of Global Change on U.S. Air Quality (Murazaki & Hess)

                        - Discussion (Possible discussion points: How do we make progress in simulating air-quality?)


Friday, 24 March 2006 (Damon Room)


8:00 p.m.         Continental Breakfast


8:30-10:30 p.m.           The stratosphere 

                        - Atmosphere response to NOy source due to energetic electron precipitation (Andronova)

                        - Climate-chemistry model simulations of secular trends in the middle atmosphere: Past and future (Kinnison)

                        - The importance of having a stratosphere (Collins)

                        - Discussion (Possible discussion points: Is an inclusion of an interactive stratosphere important for tropospheric climate and chemistry?)


10:30-10:50 a.m.         Break


10:50-1:00 p.m.           General Discussion and wrap-up

                        - Discussion (Possible discussion points:  Allocation of CSL resources, how to make progress collaboratively, where do we need to be in 1 year, 5 years, timeline of activities?)


1:00 p.m.    Adjourn