1 / 5

WRF Progress at NCEP in 2002

WRF Progress at NCEP in 2002. Steve Lord led effort to establish WRF MOA. Implemented the Janjic Nonhydrostatic Meso Model (NMM) in 8 km HiResWindow and in 4km On-Call Emergency Response (OCER) system - establishing NCEP’s baseline for WRF.

silas-miranda
Download Presentation

WRF Progress at NCEP in 2002

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. WRF Progress at NCEP in 2002 • Steve Lord led effort to establish WRF MOA. • Implemented the Janjic Nonhydrostatic Meso Model (NMM) in 8 km HiResWindow and in 4km On-Call Emergency Response (OCER) system - establishing NCEP’s baseline for WRF. • Made available 30-day retrospective data sets (BUFR & GRIB) suitable for WRF testing. • Adapted (with NSSL) NCEP operational NMM postprocessor to WRF standards, issued code and users’ guide.

  2. WRF Progress at NCEP in 2002 • Converted Eta & NMM dynamics and all physics modules to WRF coding standards. • Ensured all converted code reproduced NCEP control version results (VERY IMPORTANT). • Final step to wrap NMM under WRF modeling infrastructure underway - implementation scheduled for 4Q FY2003. • Made EMC’s grid-to-obs verification codes available with users’ guide. • Unification (with AFWA) of Land-Surface Model in WRF framework nearing completion.

  3. WRF Progress at NCEP in 2002 • NCEP led WG#4 developed beta version of WRF 3DVAR for testing (nearly ready for release) • NCEP led WG#9 is proactive in setting needs for testing and infrastructure efficiencies. • NCEP led WG#12 establishes NCEP’s prepared BUFR observation set for use in WRF 3DVAR and in WRF verification using NCEP’s code. • Duane Stevens (University of Hawaii) at NCEP working with WRF teams (application of Semi-Lagrangian to hurricanes and evaluation of NCAR Eulerian vs NMM over Hawaii)

  4. WRF Progress at NCEP in 2002 • Established Parallel system to run NCAR Eulerian mass model with NCEP physics in identical 8 km HiResWindow configuration • 4 large domain nests (Western,Central&Eastern CONUS + Alaska) • 2 small domain nests (Hawaii and Puerto Rico) • Semi-Lagrangian semi-implicit dynamic core: • Generalized vertical coordinate embodies pure sigma and pure isentropic and ALL hybrids in between • Cascade interpolation allowing forward trajectories • High-order accuracy compact difference schemes • Non-reflective top boundary condition • All development within WRF infrastructure

  5. WRF Development at NCEP/EMC • FY03 Funding • $1.5 M • $700 K NWS base • $800 K External • Effort for FY03 • Total 14.3 PY (Model and Data Assim) • 7.3 PY for development (Semi-Lagrangian, DA) • 7.0 PY for Mesoscale Branch Infrastructure • Setting up and making test runs • NMM benchmark codes and runs • WRF System Test Plan (N. Seaman – PSU)

More Related