From andrew at ucar.edu Wed Mar 15 09:47:48 2006 From: andrew at ucar.edu (Andrew Gettelman) Date: Wed Mar 15 09:47:50 2006 Subject: [Microphysics] CAM Microphysics Mtg: Mar 22, 8:30-10:30a Message-ID: Greetings, This is just a quick reminder that we will be having a special Microphysics Session, next wednesday, March 22nd at the NCAR Mesa Lab Main Seminar Room (Boulder, CO) from 8:45-10:30am. This session will be part of a joint meeting of the Atmospheric Model Working Group and the Chemistry-Climate Model Working Group. We highlight that we will (1) be showing some early results of a moment based microphysics scheme in CAM, (2) discussing other new work people would like to discuss and (3) revisit our workplan and next steps. There is plenty of opportunity for anyone who is interested to present any new ideas or things you are working on that you would like to make the group aware of. This can happen as part of the discussion, and we would like to encourage people to comment. If you are not sure, or have a burning desire to show some slides, please let me know. The agenda of this session will be as follows: 8:45-10:30 (Introduction 8:30-8:45) - Summary of the Nov 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 The remainder of morning (10:45-11:45) will be dedicated to a discussion of Scavenging in the model and how to parameterize it. The afternoon will be devoted to a discussion of Aerosols and aerosol indirect effects. You are more than welcome to come and stay for the whole day (If you could RSVP, that would help make sure there are enough cookies!) The complete agenda for Wednesday is attached below. On behalf of Steve, Peter, David, Phil and myself, we hope that you will take the time to joint us. Your continued interest and advice will be very useful in this process. Regards, Andrew -- PRELIMINARY AGENDA ------------------------------------------------- Wednesday, 22 March 2006 JOINT SESSION WITH THE CHEMISTRY-CLIMATE WORKING GROUP 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 Nov 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 a.m. Break 10:45 11:45 a.m. Scavenging - Lead-210 and beryllium-7 simulations with the new GFDL global atmosphere model AM2 (Hongyu Liu) - Discussion: (Possible discussion points: How do we represent scavenging in light of the microphysics/convection parameterizations? Does 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?) - Proposed aerosol treatment for CAM4 (Ghan) - SOA in CAM (preliminary title) (Heald) - An interactive aerosol-climate model based on CAM/CCSM: Current progress and challenging issues (Wang, Toon) - White paper on aerosols (Ghan) 2:30 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) -- o__ __ Dr. Andrew Gettelman andrew@ucar.edu _,>/'_ -- http://www.cgd.ucar.edu/cms/andrew/ +1.303.497.1887 (_) \(_)-- National Center For Atmospheric Research 1850 Table Mesa Dr, Boulder, CO, USA 80305 From andrew at ucar.edu Tue Mar 28 11:13:09 2006 From: andrew at ucar.edu (Andrew Gettelman) Date: Tue Mar 28 11:13:11 2006 Subject: [Microphysics] Results from AMWG Meeting on Web Message-ID: Greetings, A status report and next steps for microphysics development in CAM were presented last week at the CCSM Atmospheric Model Working Group (AMWG) meeting. We had a 2 hour session last wednesday, and a variety of issues were discussed. The agenda and presentations have been placed on the microphysics website. http://www.cgd.ucar.edu/cms/meetings/microphys/ (there is a link on the front page, or go to 'documents') This includes some preliminary results of implementing a detailed microphysical package. Our near term goal is to resolve some conceptual issues and get the version of the microphysics stable in the current formulation of CAM. We expect to discuss progress again at the CCSM meeting in mid June in breckenridge colorado. We also expect that we will start to work further on diagnostics and testing once we have a scheme running. If you have any questions on progress or plans, please feel free to contact us. Regards, Andrew (for Steve, David and Peter). -- o__ __ Dr. Andrew Gettelman andrew@ucar.edu _,>/'_ -- http://www.cgd.ucar.edu/cms/andrew/ +1.303.497.1887 (_) \(_)-- National Center For Atmospheric Research 1850 Table Mesa Dr, Boulder, CO, USA 80305