RUC / WRFRUC High-Resolution Temperature Program Homepage

NOAA/FSL is running special versions of the RUC assimilation and forecast system and the WRF (Weather Research and Forecast) model using RUC initial conditions for the 2003 NOAA New England High-Resolution Temperature Program (NEHRTP) .

The special RUC and WRFRUC runs for the 2003 New England program include:
• A special hourly assimilation cycle using the CONUS 20km RUC assimilating additional observations not yet available to the NCEP RUC (boundary-layer profiler, GPS precipitable water, radar reflectivity/lightning, mesonet).
• 20-km RUC model forecasts from this assimilation cycle out to 48 h every 6 h.
• 10-km RUC forecasts in a nested domain over the northeastern United States and southeastern Canada, also out to 48 h every 6 h, initialized from the special CONUS RUC20 1-h cycle described above.
• 10-km WRF forecasts in the same nested domain over the northeastern United States and southeastern Canada, also out to 48 h every 12 h, also initialized from the special CONUS RUC20 1-h cycle described above.
• 20-km WRF forecasts over the CONUS 20-km RUC domain, also initialized from the special CONUS RUC20 1-h cycle described above.

MODEL CONFIGURATIONS
20km RUC MODEL CONFIGURATION
20-km CONUS grid 50 vertical isentropic-sigma levels 1-h assimilation cycle initializing all New England RUC and WRFRUC runs, assimilating radar reflectivity/lightning, GPS precipitable water, boundary-layer profiler, mesonet 48-h forecast every 6 h, 24-h forecast every 3 h Change log
10km RUC MODEL CONFIGURATION
10-km nested grid, 249 x 241 grid points 50 vertical isentropic-sigma levels 48-h forecast every 6 h Initial conditions - FSL RUC20 cycle assimilating radar reflectivity/lightning, GPS precipitable water, boundary-layer profiler, mesonet Change log Lateral boundary conditions from RUC20 48h forecast Map projection variables: PARAMETER ( DX_P = 10158.815 ) PARAMETER ( DY_P = 10158.815 ) PARAMETER ( I_POLE_P = 156.9014 ) PARAMETER ( J_POLE_P = 701.942 ) PARAMETER ( LAT_LL_P = 34.8194 ) PARAMETER ( LON_LL_P = -94.5619 ) PARAMETER ( LAT_UR_P = 52.8146 ) PARAMETER ( LON_UR_P = -61.1127 ) PARAMETER ( LAT_TAN_P = 25.0 ) PARAMETER ( LAT_TRUE_P = 35.0 ) PARAMETER ( LON_XX_P = -95.0 ) PARAMETER ( PROJ_P = LAMBERT_P ) PARAMETER ( ROTCON_P = 0.422618 )
10km WRF MODEL CONFIGURATION
10-km nested grid NCAR mass-coordinate dynamic core - v.1.2.1 35 vertical sigma-p levels Kain-Fritsch cumulus parameterization Smirnova-RUC land-surface parameterization NCEP 3-class simple ice scheme microphysics Eta boundary-layer/surface-layer physics 48-h forecast every 12 h Initial conditions - native coordinate data including 3-d hydrometeor data from FSL RUC20 cycle assimilating radar reflectivity, GPS precipitable water, boundary-layer profiler, mesonet Lateral boundary conditions from RUC20 48h forecast RUC post-processing adapted to WRF output to produce RUC look-alike GRIB output

SPECIAL OBS USED
Boundary-layer profilers (winds) GPS precipitable water Radar reflectivity Lightning Mesonet
STANDARD OBS USED
rawinsonde METAR, buoy profiler ACARS commercial aircraft VAD (velocity-azimuth display) vertical wind profiles- from NWS WSR-88D radars GOES satellite cloud-drift wind, precipitable water

10km RUC/WRFRUC model terrain elevation (m) for NEHRTP

0-48h forecast products

RUC 10km NEHRTP forecast products - Full regional domain / Zoom Northeast US domain
WRFRUC 10km NEHRTP forecast products - Full regional domain / ~Zoom Northeast US domain
RUC 20km CONUS (development version) forecast products - cycle with extra data assimilated CONUS domain / Northeast US domain
WRFRUC 20km CONUS forecast products CONUS domain / Northeast domain