Thursday, 20 March 2003
8:00 8:30 Continental Breakfast
8:30 8:50 WELCOME, MEETING PURPOSE, AND FINALIZE AGENDA (Rick Smith and Bill Large)
Overview: The scope of the meeting was severely curtailed by the Denver airport closure and the absence of most participants from outside of Boulder. Nonetheless, Steve Jayne, Frank Bryan, and Nori Nakishiki did arrive, and with the local participants some presentations and discussions did take place. Links to the presentations we did receive are given below, along with a brief synopsis. Some other agenda items have been postponed to the Breckenridge meeting in June.
- The Ocean Model Working Group and CCSM (Nancy Norton, 10 min) Presentation: HTML
The resources of the ocean working group include 1 FTE and per month allocations of 1900 GAUs production, and 6800 GAUs development. Plans are to increase the production to the point where the Ocean Working Group (OWG) could have a fully coupled experiment running nearly continuously. Which experiment would depend on OWG prioritization and an identified member willing to lead the analysis? For reference 1 year of standard CCSM2 integration takes ~60 GAUs on bluesky, and about 10 years can be done per day, implying that we could use an order of magnitude more production time. A strong case will need to be made.
8:50 10:10 CCSM OCEAN MODEL CHANGES FOR IPCC RELEASE (Bill Large)
The OWG constituted a Change Review Board for ocean model changes proposed for the IPCC model version. All changes passed this stage of the adoption process and will undergo the next stages of testing, taking into account suggestions from the OWG.
- KPP Vertical Mixing (Gokhan Danabasoglu, 20 min) Presentation: PowerPoint; HTML; PDF
- Double Diffusion (Steve Yeager, 15 min) Presentation: PowerPoint; HTML; PDF
- Solar Absorption (Bruce Briegleb, 15 min) Presentation: PowerPoint; HTML; PDF
- Ideal Age and Passive Tracer Infrastructure (Keith Lindsay, 15 min)
- The infrastructure will be in place to turn ideal age on and off anytime throughout coupled or ocean alone integrations.
- Coupling (Bill Large, 15 min) Presentation: PowerPoint; HTML; PDF
10:10 10:30 Break with Paleoclimate Model Working Group (Room 1001)
10:30 12:30 JOINT SESSION WITH PALEOCLIMATE WORKING GROUP (Bette Otto-Bliesner)
- Grid Generation (Steve Yeager, 30 min) Presentation: Power Point; HTML; PDF
- The process of generating new grids, either for the present day or paleoclimate applications, has been streamlined or documented.
- Alternative Initial Conditions Presentation: PowerPoint; HTML; PDF
- Cretaceous (tabled)
- Present Day (Gokhan Danabasoglu, 15 min)
- Discussion of Alternative Models
- 2 Degree Resolution (Esther Brady and Steve Jayne, 20 min)
It was agreed to peruse improving the performance of the coupled x3 before committing to another model configuration. The criteria are to be meridional overturning circulation in the North Atlantic, ACC strength, and interannual variability of sea level height in the tropical Pacific.
12:30 1:30 Lunch
1:30 - 3:00 DATA ASSIMILATION
3:00 - 3:20 BREAK
3:20 - 5:30 HIGH RESOLUTION OCEAN MODELING
Questions for the OMWG to consider
Friday, 21 March 2003
8:00 8:30 Continental Breakfast
8:30 8:50 COUPLED EXPERIMENTS ADDRESSING OCEAN SCIENCE QUESTIONS (Bill Large)
- Is the total amount of water mass formation in the ocean fixed by some global constraint? (tabled)
- Is the present day THC close to an instability threshold? (tabled)
- Why do Pacific water masses differ from the Atlantic? (Bill Large, 15 min) Presentation: PowerPoint; HTML; PDF
- Open discussion, including additional proposals and prioritization (tabled)
10:10 - 10:30 Break
10:30 - 12:00 FUTURE MODEL DEVELOPMENTS
- Transition to POP2.0 (tabled)
- Equatorial Mixing (tabled)
- Open discussion, including additional developments and prioritization (tabled)
12:00 - 1:00 Lunch
1:00 - 2:00 REVISIT TABLED ITEMS FROM
(Rick Smith and Bill Large)
2:00 - 3:00 ROUNDTABLE DISCUSSION OF JOINT COLLABORATIONS (Tabled)