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Comprehensive Overview of Gridded Models at NOAA's ESRL: Data Distribution and Characteristics

This document provides a detailed overview of the gridded models utilized by NOAA's Earth System Research Laboratory (ESRL), focusing on data distribution policies for GSD-specific models such as FIM, RUC, RAP, and HRRR. It outlines how the NCEP GFS model initializes these models using various observational data sources including surface observations, radiosondes, and satellite data. The document details the models' resolutions, running intervals, and forecast capabilities, emphasizing the specific archive practices for each model.

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Comprehensive Overview of Gridded Models at NOAA's ESRL: Data Distribution and Characteristics

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  1. General Information on Gridded Models at ESRL Brian Jamison NOAA/ESRL/GSD

  2. Data Distribution Policy • GSD distributes only GSD-specific data • FIM, RUC, RAP, HRRR • Data from other sources are not distributed except in special cases approved by GSD senior staff

  3. NCEP GFS Model • Used to initialize FIM and RAP (and RUC?) • HRRR initialized from RAP • GFS assimilates data from • Surface & Buoy Observations • Radiosonde Observations (RAOBs) • Wind Profilers • Aircraft Observations • Radar & Satellite

  4. Data Used for Analysis • Aircraft (T,W,H,RH) • Rawinsonde, Dropsonde (T,P,DP,W,H) • Surface stations & Buoys (T,P,W,RH,Ceil,Vis) • Radar (VAD winds, Reflectivity) • Profiler & RASS (T,W) • Satellite (TPW, Cloud Top T, Vis & IR CDW) • Lightning • Other – Sodar, Tower (W)

  5. FIM (Flow-following finite-volume Icosahedral Model) • Global - Native resolution 30km, interpolated to 0.5 degree grid • Native vertical resolution 64 hybrid levels, interpolated to 42 isobaric levels. • Runs every 12 hours, forecasts to 180 hours

  6. RAP (Rapid Refresh) Model • North America and CONUS domain • 13km resolution • 49 native vertical levels • 39 isobaric levels • Runs hourly, forecasts to 18 hours

  7. HRRR Model • Initialized from RAP • Smaller CONUS domain • 3km resolution • Same vertical resolution as RAP • Runs hourly, forecasts to 15 hours

  8. What GSD Archives FIM 0.5 degree lat-lon grids from 30km and 15km RAP 13km CONUS and N. America grids RUC 13km CONUS grids, hourly 00-06,3-hourly 09-24 HRRR 3km CONUS grids, hourly

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