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COAMPS Coupled Ocean Atmosphere Prediction System Developed by FNMOC and NRL (1996) Operational - MEL/FNMOC Experimental - NRL-MRY 27 km Spatial.

Published byAlessia Bianco Modified over 5 years ago

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Presentation on theme: "COAMPS Coupled Ocean Atmosphere Prediction System Developed by FNMOC and NRL (1996) Operational - MEL/FNMOC Experimental - NRL-MRY 27 km Spatial."— Presentation transcript:

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3 COAMPS Coupled Ocean Atmosphere Prediction System Developed by FNMOC and NRL (1996)
Operational - MEL/FNMOC Experimental - NRL-MRY 27 km Spatial Resolution 6 hr Temporal Resolution 48 hr forecast issued twice daily Year Round 6 km Spatial Resolution 30 min Temporal Resolution 72 hr forecast issued twice weekly Summer 2001

4 COAMPS Technical Information
Operational (OP) Experimental (EXP)

5 Experimental COAMPS: Grids
Regional Model Horizontal Resolution: Triple-nested: km x 18 km x 6 km Vertical resolution: approximately 30 Sigma levels 54 KM Wind time-series at LEO from 6 km Experimental COAMPS Forecast 18 KM 6 KM

6 COAMPS at LEO Pressure and Wind Fields: July 27, 2001 00Z
Operational Experimental Data provided via FTP from MEL (Master Environmental Laboratory) 27 km spatial resolution 6 hour temporal resolution Regional Synoptic/Mesoscale Model Data provided via FTP from NRL-MRY 6 km spatial resolution 30 min temporal resolution Regional Mesoscale Model

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8 Ensemble Forecast: Cycle 3
Operational COAMPS Operational NOGAPS Experimental COAMPS

9 Case Studies Cycle 2- Sea Breeze - July 17-18, 2001 00Z
Cycle 6 - Nor’easter - July 31, Z

10 The New Jersey Sea Breeze
Develops late afternoon during weak synoptic flow Sea Breeze front moves inland till just after sunset Front observed by NWS Doppler Radar Offshore Winds Sea Breeze Front Onshore Winds

11 Sea Breeze Mesoscale Event Cycle 2 - July 18th 00Z, 48 hour forecast
Seabreeze frontal passage at 1800Z Light NNW wind increased to SE knots Front moved inland approximately 25-30 km Seabreeze Front NWS Radar 07/17 22Z Seabreeze Front NO Seabreeze OP 48 hr forecast 07/18 00Z EXP 48 hr forecast 07/18 00Z

12 Nor’easter Synoptic-Scale Event
Cycle 6 - July 31st 00Z, 48 hour forecast Biggest Storm of the Experiment 30 knot ENE Winds 10-12 ft Seas Heavy Rains OP Analysis 07/31 00Z OP 48 hr forecast 07/31 00Z EXP 48 hr forecast 07/31 00Z

13 Atmospheric Model Validation
Time Series Comparisons - Observations - Experimental COAMPS (EXP) - Operational COAMPS (OP) - Operational NOGAPS (NGP) - RUC Analyses Variables - Wind Speed and Direction - Barometric Pressure - Relative Humidity - Temperature Locations Over water -NOAA Buoys Over Land - NWS ASOS At the coast - Tuckerton Products - Plots - RMS Difference - Average Error CYCLE 3: July 18 - July 21, 2001 Wind Vectors : Tuckerton | | BLM | ACY | WWD Temperature: Tuckerton | BLM | ACY | PHL | EWR

14 LEO 2001 Weather Summary

15 Tuckerton Wind Direction Average Error (deg)

16 FAIR Seabreeze Nor’easter Seabreeze FAIR Nor’easter Heat Wave Heat Wave

17 Tuckerton Wind Direction RMS Error (deg)

18 FAIR Seabreeze Nor’easter Seabreeze FAIR Nor’easter Heat Wave Heat Wave

19 Tuckerton Wind Speed Average Error (m/s)

20 FAIR Seabreeze Nor’easter Seabreeze FAIR Nor’easter Heat Wave Heat Wave

21 Tuckerton Wind Speed RMS Error (m/s)

22 FAIR Seabreeze Nor’easter Seabreeze FAIR Nor’easter Heat Wave Heat Wave

23 Tuckerton, NJ All Forecast Cycles (1-8) RMS Errors

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