1 / 11

Preliminary Core Test Results for WRF-NMM and ARW: Developmental Testbed Insights

This report outlines the preliminary core test results conducted at the Developmental Testbed Center, focusing on WRF-NMM and ARW models over a period from December 2005 to June 2006. The evaluation included comprehensive retrospective runs with identical domains and specifications, ensuring high resolution (13km) and consistent verification protocols. Key physics options applied include NMM physics and RUC-like configurations. Results indicate significant insights into model behavior, computational efficiency, and parameter performance during forecast simulations.

taryn
Télécharger la présentation

Preliminary Core Test Results for WRF-NMM and ARW: Developmental Testbed Insights

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. 5. Developmental Testbed Center Preliminary Core Test Results Bob Gall 18 April 2006

  2. Core Test • Cases: Complete two retrospective runs per day, two months per season, all four seasons for both WRF-NMM and ARW (960 runs) • Domains: nearly (99%) identical (dissimilar map projections) • Verification: exclude 5-grid point “halo” region outside common domain • Resolution: 13km for both cores (RUC resolution) • Vertical resolution: 50 levels for both cores, similar distribution • Initial conditions: RUC-13 for both cores (imposes domain limit) • Soil initial conditions: Noah LSM “option 99” (RUC LSM in Phase 2) • Boundary conditions: 6-h NAM for both cores (as with RUC) • Phase 1 (Dec05-Mar06): Use NMM physics for both dynamic cores • More tractable task to port NMM physics to ARW core than v.v. • “NMM physics”: Ferrier microphysics, MYJ PBL, BMJ convective scheme • Phase 2(Mar06-Jun06): Use “RUC-like” WRF-RR physics for both dynamic cores (requires porting of NCAR/RUC physics to NMM)

  3. 250 mb Temperature

  4. 500 mb Temperature

  5. Temperature all levels

  6. Relative Humidity all levels

  7. 250 mb Wind Vector

  8. Wind Vector All Levels

  9. Precipitation

  10. Time step 36 sec NMM 50 sec ARW Ratio ARW/NMM 1.40 Time step 30 sec NMM 72 sec ARW Ratio ARW/NMM 1.08 Preliminary Timing ResultsCore test domain and resolutionforecast duration 24 hoursPhysics calls:Radiation every 30 min both modelsOther physicsEvery other time step NMMEvery time step ARW

  11. End

More Related