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Published byAbigayle Bradford Modified over 9 years ago
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LAPS / STMAS Verification Activities Steve Albers, Isidora Jankov ESRL / GSD Verification Summit September 2011 Updated Sep 7, 2011
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LAPS Motivation High Resolution (500m – 20km), rapid update (10-60min) Highly portable system – about 150 users world wide Federal Gov’t – NWS, RSA, PADS, FAA, DHS State Gov’t – California Dept of Water Resoures International – Finnish Met. Inst., China Heavy Rain Inst. Global analysis – used by SOS Wide variety of data sources: OAR/ESRL/GSD/Forecast Applications Branch2
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Data Ingest Intermediate data files ClassicGSI Data STMAS-3D Trans Model prep WRF-ARWMM5WRF-NMM Ensemble Forecast Probabilistic Post Processing Error Covariance LAPS / STMAS DA-Ensemble System 3 http://esrl.noaa.gov/gsd/fab OAR/ESRL/GSD/Forecast Applications Branch Analysis Scheme Verification Built-in Verification Ports with system
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Global Solar Radiation Analysis + Observations OK Mesonet ARL / FRD
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Global Solar Radiation Analysis + Observations 3-Frames at 15-minute interval
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Solar Radiation Analysis Verification Oklahoma Region (past 48 hours) 15 minute verification ~100 Oklahoma mesonet stations. 3 km grid spacing1 km grid spacing
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Solar Radiation Web Page Verified at station locations measuring global solar radiation on time scales <= 15min Mean Analyzed / Forecast Mean Observed RMS differences
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Solar Radiation Analysis Verification HWT Domain Analysis (72 hour time series) ~100 Oklahoma mesonet stations. Clearer Days
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Solar Radiation Analysis Verification HWT Domain Analysis (72 hour time series) ~100 Oklahoma mesonet stations. Partly Cloudy Days
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Downward Solar Radiation Forecast vs. Observations
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Cloud Cover Analysis Matching 1-3 hour Solar Radiation Forecast
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Solar Radiation Ensemble Forecast Verification HMT Forecast (00-09 hours) ~6 Idaho ARL solar radiation stations.
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Solar Radiation Forecast Verification HWT Forecast (00-06 hours) LAPS / STMAS / HRRR + Oklahoma solar radiation stations. LAPS STMAS HRRR LAPS STMAS HRRR
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Radar Reflectivity Verification Web Page Verified over various domains of integration for deterministic as well as ensemble forecasts. 3D radar volume data at several reflectivity thresholds. BIAS ETS
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CloudSat Verification of LAPS Cloud Analysis LAPS CloudSat
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16 June 2002 3-hr Forecast, Lin μPhysAnalysis Well-Developed Squall Line at Initial time
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Bias & ETS June 16 2002 Low Sensitivity in Bias to Variations in Microphysics (developed squall line case) ETS values are highest at early times due to hot-start
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Ensemble ETS (North-East Corridor) STMAS BIAS (North-East Corridor) CONUS LAPS/WRF and HRRR
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Forecast at 2011-09-04 00Z ETSBias NE Corridor Domain
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That’s the latest – Questions?
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2hr HOT FcstAnalysis2hr NO-HOT Fcst 850 mb Analyzed and Simulated Reflectivity 16 June 2002
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Why most of the metadata are N/A?
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