1. 15 June 2005RSA TIM – Boulder, CO Hot-Start with RSA Applications by Steve Albers

2. 15 June 2005RSA TIM – Boulder, CO Recent LAPS Analysis Improvements – Added new data ingest routines Radiometers MADIS (mesonet, aircraft) – Improved Determination of multi-Doppler winds Independent of radar order (CWB collaboration) – Increased ROC domain wideband (Lvl-II) radars to 13 – Improved derivation of cloud vertical velocities (CWB collaboration)

3. 15 June 2005RSA TIM – Boulder, CO Cloud vertical motion Important for 0- to 12-hour forecast using Hot Start Cloud vertical motion tuning –Fall velocity dependence –Improved cloud-type dependence –Randomly specified updrafts

4. 15 June 2005RSA TIM – Boulder, CO Result: Laps analysis 20-14-4: Same as 20-14-3 but did not site downward motion in stratiform region 20-14-3: Same as 20-14-2 but redefined convective and stratiform region

5. 15 June 2005RSA TIM – Boulder, CO Recent LAPS Analysis Improvements (cont) – Corrected vertical temperature bias in balance package – Began testing improved balance scheme, incorporating thermodynamic terms – New Fire Wx Grids (Haines Index) – Numerous other miscellaneous improvements

6. 15 June 2005RSA TIM – Boulder, CO Recent MM5 Forecast Improvements – SST input from GFS Provides better forecasts than climo or “pseudo-SST” Provides a first guess for LAPS SST analysis – Added TKE diagnosis to post-processor Allows use of better MRF PBL while still meeting need for TKE field for HYPACT integration – Switched PBL scheme to MRF Reduced surface T RMSE and bias by 1-2K – Implemented new Schultz II microphysics – Deactivated K-F cumulus parameterization

7. 15 June 2005RSA TIM – Boulder, CO System Design Review Basic requirements – New 24-h forecast every 6 hours – High spatial resolution (1 km objective) – Support launch weather operations and range safety requirements for dispersion modeling – Integrate with display system (AWIPS) Trades considered – Size of domain and nesting options – Forecast length vs. scale predictability – Computational resources vs. cost-benefit – Future upgrade path

8. 15 June 2005RSA TIM – Boulder, CO Basic Solution LAPS coupled with MM5 NWP model Use diabatic initialization (“hot start”) Utilize parallel code on Linux cluster Integrate with AWIPS in a modular fashion

9. 15 June 2005RSA TIM – Boulder, CO AWIPS Integration AWIPS Data Server AWIPS Workstation Modeling Server NOAAPORTLDAD LAPS Anal/Fcst Grids Obs/Radar/Sat/NCEP

10. 15 June 2005RSA TIM – Boulder, CO Hardware Configuration Linux Cluster Modeling Server – 1 master/8 compute nodes (18 processors) – Xeon Processor 3.2 GHz on each node – 60GB RAID array on front-end – Myrinet inter-connect Interacts with AWIPS DS via NFS LAPS analyses and 2-h MM5 update forecast run on master node 6-hourly MM5 and post-processing use compute nodes

11. 15 June 2005RSA TIM – Boulder, CO LAPS Domain Configuration Triple Nest Domain – 97x97 – 10.0/3.3/1.1 km  x – 10km for Model Init – 3.3/1.1 for NowCasting LAPS Runs – Hourly analyses – 41 Pressure levels – Runs at H+20 min – Available at H+30 min

12. 15 June 2005RSA TIM – Boulder, CO RSA LAPS Data Sources National Data (NOAAPORT SBN Feed) – Eta (Grids 211, 212, and 215) – Regional narrowband WSR-88D reflectivity – GOES imagery (Vis, SWIR, 2 LWIR) – MDCARS – RAOBs – METARs/Ship Reports/Buoys – National Profiler Network

13. 15 June 2005RSA TIM – Boulder, CO RSA LAPS Data Sources Sea Surface Temperature Data – NCEP internet FTP feed – GFS model

14. 15 June 2005RSA TIM – Boulder, CO RSA LAPS Data Sources Local Data (via LDAD) – Local wideband WSR-88D (Z and Vr) – Local ASOS Observations – 50/915 MHz Wind Profilers – MiniSODAR Wind Profiles – RASS – Tower observations – AMPS Soundings – Local MM5 forecast grids

15. 15 June 2005RSA TIM – Boulder, CO MM5 Forecast Model Two configurations for RSA – “Update” run to provide first guess for LAPS Used for “downscaling” national model Runs every hour out to 2 h on master node (serial) Initialized with national first guess (Eta forecast) and NCEP SST Domain 1 (10km) only Not displayed on AWIPS – Forecast run used for operational forecasts Diabatically intialized with LAPS Runs every 6 hours Triple nest (10/3/1.1) with forecasts out to 24/12/9

16. 15 June 2005RSA TIM – Boulder, CO MM5 Forecast Model MM5 used for RSA application – FSL modifications for diabatic initialization – FSL-developed runs scripts suitable for operations Concurrent post-processing – Supports multiple output formats – Allows viewing on workstation as model runs – Hourly temporal output

17. 15 June 2005RSA TIM – Boulder, CO MM5 Run Configuration (Development System Config) 30-second timestep MRF PBL Scheme Explicit Schultz II microphysics on all domains 2-way feedback between nests Domain 1 initialized with LAPS (diabatic) Domains 2 and 3 interpolated from parent Lateral boundaries provided by NCEP Eta

18. 15 June 2005RSA TIM – Boulder, CO Vertical Level Configuration 41  Levels

19. 15 June 2005RSA TIM – Boulder, CO LAPS-MM5 Production Cycle National Model Forecast (Eta via SBN) MM5 Update Cycle (10km) 1-h Forecast for First Guess 2-9 h Forecast for IC/LBC 10-km LAPS Analysis 3.3-km LAPS Analysis 1.1-km LAPS Analysis Hourly Cycle MM5 Forecast (Every 6 h) - 10km to 24h - 3.3 to 12h - 1.1 to 9h Observations via SBN and LDAD Diabatic Init. Cond. Lateral Boundary Conditions

20. Cape Canaveral 6-hour QPF on 1-km Grid and Radar Verification 9 Feb 04