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ARSC & IARC Report Juanxiong He1,2 Greg Newby1

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1 ARSC & IARC Report Juanxiong He1,2 Greg Newby1
1. Arctic Region Supercomputing Center, 2. International Arctic Research Center ARSC & IARC Report DOD/RACM Workshop, Jun

2 Summary of the works since last December
Next step Outline

3 Summary of the works since last December
Merge ESMF of WRF and ESMF of CCSM4 Global WRF active coupling with POP2, CICE, CLM Regional WRF coupling with data model Regional WRF coupling with POP2, CICE and sland model Code for hybrid coupling Summary of the works since last December ccsm4_0_racm02

4 Merge ESMF of WRF and ESMF of CCSM4
Previous method: Rename each module/subroutine of ESMF of WRF and ESMF subroutines called by seq_ccsm_drv.F90 Resolve the differences of both EMSF. Add some subroutines and structures into the ESMF of CCSM4 to simulate the functions of the ESMF of WRF. Merge ESMF of WRF and ESMF of CCSM4

5 Global WRF full active coupling with POP2, CICE, CLM
Setting Global WRF 120x60, POP and CICE 100x116 CLM 46x72 start at _00:00:00 Status Run as long as three months and crashes at the fourth month Global WRF full active coupling with POP2, CICE, CLM

6 Sea level Pressure (January)
Observation Coupling WRF alone

7 Sea level Pressure (February)
Observation Coupling WRF alone

8 Sea level Pressure (March)
Observation Coupling WRF alone

9 Result Coupling WRF works fine.
The performance of WRF in the full coupling relates to the single WRF strongly. In this simulation, the coupling and the single run aren’t very good in Northern high latitude. Result

10 Regional WRF coupling with data model
Setting: wr50a_wr50a (276x206, time step =2min) WRF, DLND, DOCN, DICE start at _00:00:00 Status: 6 days at least, fine, maybe as long as we wish Regional WRF coupling with data model

11 Regional WRF coupling with data model
Atmosphere domain

12 Regional WRF coupling with data model
Surface temperature at _00:00:00 Sea level pressure at _00:00:00

13 Regional WRF coupling with POP2, CICE and sland model
Setting: wr50a_ar9v2 (276x206_1380x1080) WRF, SLND, POP2, CICE start at _00:00:00 Status: crash after 6 hours integration Regional WRF coupling with POP2, CICE and sland model

14 Regional WRF coupling with POP2, CICE and sland model
Ocean domain

15 Regional WRF coupling with POP2, CICE and sland model
ar9v2 ar9v1 Sea surface temperature at _06:00:00

16 Regional WRF coupling with POP2, CICE and sland model
Air temperature at the bottom level at _06:00:00 Sea level pressure at _06:00:00

17 Regional WRF coupling with POP2, CICE and sland model
Tony has regenerated the remapping file WRF domain need be verified further surface temperature from coupler at _06:00:00

18 Benchmark and resource
Benchmark(wr50a_ar9v2) CPL=64, WRF=25,SLND=25,CICE=64 POP2=64,SGLC=1 wall time: 3min / simulation time: 1hr Resource 32 CPU may be the minimum to run wr50a_ar9v2. Tony suggested 64 CPU and more are better to run wr50a_ar9v2 . Benchmark and resource

19 Code for hybrid coupling
Real coupling region WRF surface scheme or data model

20 Code for hybrid coupling
New option Config_flags%hybrid_coupling New code module_phy_init.F, module_first_rk_step_part1.F start_em.F Revise Code Module_hybrid_driver.F, Module_hybrid_sfclay.F Module_hybrid_sfcdiags.F, Module_hybrid_noahdrv.F Module_hybrid_slab.F Code for hybrid coupling

21 Next Step WRF, VIC, POP2 and CICE full coupling
Improve the simulation and performance Next Step

22 Thank you!

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