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The TIGGE Model Validation Portal: An Improvement in Data Interoperability
Thomas CramDoug SchusterHannah WilcoxSteven Worley
National Center for Atmospheric ResearchBoulder, CO
AMS Annual Meeting, New Orleans, 25 Jan 2012
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THORPEX Interactive Grand Global Ensemble (TIGGE)
Mission: Foster and accerlerate 1-day to 2-week high-impact weather forecasts.
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TIGGE Data Portal user interface
tigge.ucar.edu
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TIGGE Model Validation Portal at NCAR
Ensemble Forecast
Observations
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TIGGE Model Validation Portal at NCAR
Ensemble Forecast
Observations
• Add value to ensemble forecast research• Streamline access to observational data to support model validation
• Match observations with ensemble forecasts
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User-side resources
Data Access - Common Approach
DataUser
• Data Storage• Format Conversion• Re-gridding• Subset Extraction• Post Processing
Forecast Validation
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TIGGE MVP Data Flow
NCAR RDA system processing
• Data Storage• Format Conversion• Re-gridding• Subset Extraction Validation
DataUser
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How It Works
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How It Works
• Submit a request through TIGGE portal• Click on checkbox – get matching obs data• E-mail notification when data are ready
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Data Description
Geopotential Rel. Humidity
Temperature Specific Humidity
Wind vectors & speed Dew Point
Mean SLP Vapor Mixing Ratio
NCEP PREPBUFR Observations (1997 – present)
• Surface and upper air reports – used for NCEP GDAS
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Data (cont.)CMORPH Precipitation (coming soon)
• Precipitation derived from multiple satellites• Dec. 2002 – present• 0.25 x 0.25 grid• 3-hourly
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Output Format – NetCDF
PREPBUFR obs• Model Evaluation Tools software NetCDF format
o www.dtcenter.org/met/users• MET software ingests:
o forecasto observations
CMORPH• CF-1.5 compliant
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Access to full archives of dataTIGGE forecasts: dss.ucar.edu/datasets/ds330.0 PREPBUFR: dss.ucar.edu/datasets/ds337.0 CMORPH: dss.ucar.edu/datasets/ds502.0
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Summary• Integrated access for ensemble forecasts and observations that can be used for validation
• Compatible with MET software• Service brings together diverse datasets (burden taken off researcher)
• Modular approach – Integrated & stand-alone access
More info: [email protected]
