Status of Candidate Processes (Part 1) OptionPhaseOrderDateComments FV core00Fall 2007CAM 3.5 Dilute parcel01Fall 2007CAM 3.5 Convection02Fall 2007CAM.

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Presentation transcript:

Status of Candidate Processes (Part 1) OptionPhaseOrderDateComments FV core00Fall 2007CAM 3.5 Dilute parcel01Fall 2007CAM 3.5 Convection02Fall 2007CAM 3.5 Revised def of sfc albedo03Fall 2007CAM 3.5 Conv Mom. Trans04Fall 2007CAM 3.5 Predicted Greenhouse Gases1Safe, a little more expensive Morrison /Gettelman Microphysics 1* if we ignore AIE Interaction with UW, Indirect effect, and ice are remaining areas to be resolved, AIE depends on aerosol module choice. New Bulk Aerosols (predicted or prescribed) 1Safe, but may be replaced by modal aerosols, influences the AIE Flux Averaging1Safe, no brainer Polar Filtering1Minimal effect I hope Phase 1: Could be “finished anytime” Phase 2: absolutely critical Phase 3: should wait till phase 2 issues resolved

Status of candidate processes (part 2) OptionPhaseOrderDateComments UW Shallow+PBL2Need for explicit coupled testing Revisions to Condensation/Evaporation 2Discussed here Modal Aerosols2Discussed here Predicted/prescribed RRTM2Aerosols, Ice, Remaining software engineering nearing completion Gravity Wave Tuning3Whenever Necessary 20m Surface layer3Now possible, but we havent demonstrated climate improvement yet Modified Holtslag scheme3Minimal effect Resolution3 Revisions to Ice Microphysics3Discussed here

Uncertain, probably need to wait until after phase 3 Merging of HB and UW PBL PDF based Cloud Fraction Alternate Subgrid Column Generators Alternate Convection formulations

Towards CAM4 MG Modal +emissions Macrop Ice UW PBL GW Starting configuration RRTM +optics +interface BAM +emissions 3 or 4 candidates by July 30 Each tested coupled

Task Teams? Indirect effect –Andrew G, Hugh, Steve, Xiaohong Ice –Andrew G, Hugh, Xiaohong, David RRTM –Phil, Mike, Andrew C, Bill C. BAM –Phil, J-F, Peter, Andrew G, Andrew C Modal –Steve, Xiaohong, UW –Sungsu, Phil, Chris, Andrew G, Hugh,