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nmmlsm : sf_surface_physics = 99 noahlsm : sf_surface_physics = 2

NCEP/NCAR Noah LSM unification. nmmlsm : sf_surface_physics = 99 noahlsm : sf_surface_physics = 2. “unified” noahlsm (option 2 ) will replace nmmlsm (option 99 ). MMB meeting Thursday 17 May 2007. summer and winter cases: - 24 JUL 2006/12z - 28 NOV 2006/12z. noahlsm -vs- nmmlsm:

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nmmlsm : sf_surface_physics = 99 noahlsm : sf_surface_physics = 2

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  1. NCEP/NCAR Noah LSM unification nmmlsm: sf_surface_physics = 99 noahlsm: sf_surface_physics = 2 “unified” noahlsm (option 2) will replace nmmlsm (option 99) MMB meeting Thursday 17 May 2007

  2. summer and winter cases: - 24 JUL 2006/12z - 28 NOV 2006/12z noahlsm-vs-nmmlsm: -Latent heat flux andskin temperaturemaps -Verification stats Noah LSM unification latest NAM/WRF-NMM parallel code WRF-launcher runs (v2.2.0), AQ domain, 84-hr

  3. Noah LSM unification noahlsm-minus-nmmlsm: -Latent heat flux andskin temperature difference maps at +03hr - 24 July 2006, 12z - 28 November 2006, 12z

  4. Latent heat flux summer previous (target) latest parallel code Surface skin temperature

  5. Latent heat flux winter previous (target) latest parallel code Surface skin temperature

  6. Noah LSM unification 24 July 2006, 12z noahlsm-vs-nmmlsm: -Verification stats 2-m temp 2-m RH 10-m wind 850mb temp and RH 500mb height and 250mb wind

  7. 2-m temperature error west east JULY nmmlsm noahlsm

  8. 2-m RH error west east JULY nmmlsm noahlsm

  9. 10-m wind speed error west east JULY nmmlsm noahlsm

  10. 850mb temp and RH temp RH JULY nmmlsm noahlsm

  11. 500mb height and 250mb wind height wind JULY nmmlsm noahlsm

  12. Noah LSM unification 28 November 2006, 12z noahlsm-vs-nmmlsm: -Verification stats 2-m temp 2-m RH 10-m wind 850mb temp and RH 500mb height and 250mb wind

  13. 2-m temperature error west east NOVEMBER nmmlsm noahlsm

  14. 2-m RH error west east NOVEMBER nmmlsm noahlsm

  15. 10-m wind speed error west east NOVEMBER nmmlsm noahlsm

  16. 850mb temp and RH temp RH NOVEMBER nmmlsm noahlsm

  17. 500mb height and 250mb wind height wind NOVEMBER nmmlsm noahlsm

  18. Noah LSM unification Remaining issues: • - some output fields that don’t affect integration • - reach consensus on which NCEP vs NCAR • physics changes/parameters to keep vs. what • to ”flag” as different options • - continue NAM parallel • - commit code

  19. Noah LSM development Future: • - surface layer stable BL, thermal roughness • - unify surface layer for Noah model • - soil: van Genuchten soil hydraulics • - veg: canopy conductance via data analysis • - snow roughness =fct(snow frac, veg type) • - surface energy balance closure (iterative SEB) • - water budget closure (dewfall, frostfall?) • - mixed-phase precip (rain/snow) • - 2-layer canopy with large-eddy canopy mixing

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