1. The Community Climate System Model Peter Gent Chairman CCSM Scientific Steering Committee Maurice Blackmon Symposium October 29, 2007

2. Two (slightly out of focus) CGD Directors

3. SST from the CSM 1 run made in fall 1996 from Boville and Gent, J Climate, 1998

4. CSM 1 was the first climate model to produce a non-drifting control run without “flux corrections”

5. Sea Ice area was also stable, with a good simulation, especially around Antarctica

6. The ocean transported the correct amount of heat because the “flux corrections” didn’t transport any

7. Evolution of CCSM J. Climate, 1998 (Boville and Gent, 1998) CSM 1.0 June 1996 Kiehl and Gent, 2004 CCSM 2.0 May 2002 New ocean, land, sea-ice models New physics in atmospheric model J. Climate, 2006 (Collins et al., 2006) IJHPCA, 2005 CCSM 3.0 June 2004 New physics in all components

8. J. Climate Special Issue J. Climate Special Issue devoted to CCSM3: Vol 19, No 11, June 1, 2006 26 papers  SSC (1)  Atmosphere Model (6)  Ocean Model (4)  Land Model (2)  Climate Change (2)  Climate Variability (4)  Polar Climate(4)  Paleoclimate (3) 510 pages Authorship  51 NCAR  48 External

9. The International Journal of High Performance Computing Applications Objectives  Describe Software Engineering for climate models  Document performance and portability 13 papers published in Fall 2005, Volume 19, Number 3 Authorship  32 External  9 NCAR

10. Contributions to IPCC Fourth Assessment Three phases: –Pre-industrial (1870) –20th Century (1870-2000) –Emissions Scenarios SRES Scenarios: –Commitment (20 th C. CO 2 ) 2000-2100 (8 runs) 2100-2200 (4 runs) –A1B and B1 Scenarios 2000-2100 (8 runs) 2100-2200 Const (5 runs) 2200-2300 Const (1 run) –A2 Scenario 2000-2100 (8 runs) A1B B1 Commitment

11. US University developers of the CCSM Twenty-two institutions currently: Carnegie Institution Center for Ocean-Land-Atmosphere Studies Colorado State University Georgia Institute of Technology Lamont Doherty Earth Observatory/Columbia Massachusetts Institute of Technology Princeton University Scripps Institution of Oceanography State University of New York / Stony Brook University of Arizona University of California, Berkeley University of California, Irvine University of California, Los Angeles University of California, Santa Cruz University of Colorado University of Illinois University of Kansas University of Miami University of Texas University of Washington University of Wisconsin Woods Hole Oceanographic Institute NCAR

12. INEZ FUNG 2007 CCSM Distinguished Achievement Award

13. Control Neale+Richter HadiSST Obs

14. CCSM Advisory Board Meeting at NSF in November 2003

15. THANKS MAURICE HAPPY FISHING