daniël van dijke msc. the use of a high resolution model in a private environment daniël van dijke...
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Daniël van Dijke MSc.
The use of a high resolution model in a private environment
Daniël van Dijke (MeteoGroup)
Wim van den Berg, Gerald van de Grijn, Marlous Jonker, Dirk Malda
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• Introduction
• MeteoGroup enhancements
• Example case
• Use within MeteoGroup
Outline
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IntroductionWeather Research and Forecasting Model (WRF®1)• National Center for Atmospheric Research (NCAR)• National Oceanic and Atmospheric Administration (NOAA)• National Centers for Environmental Prediction (NCEP)• Forecast Systems Laboratory (FSL)• Air Force Weather Agency (AFWA)• Naval Research Laboratory• Oklahoma University • Federal Aviation Administration (FAA)• Many users….
1 WRF® is a registered trademark of the University Corporation for Atmospheric Research (UCAR)
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MG enhancements
•ECMWF model level data instead of pressure level data•High resolution land use and roughness data•3DVAR observation nudging
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MG enhancements
Skin surface temperature near coast
ECMWF landmask
ECMWF skin surface temperature at 0 UTC
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Case: 21-07-2009
21-07-2009 12 UTC 22-07-2009 12 UTC
Maximum 2m temperature 21-07-2009
VIS 16 UTC 21-07-2009
Observations
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13:00 – 23:55 UTC 21-07-2009
Case: 21-07-2009
Observations
Maximum wind gustspast 24h (knots)0 UTC 22-07-2009
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Case: 21-07-2009
WRF – setup
WRF v3.1.1
9km main domain (269x242x43)
3km nest(598x598x43)
ECMWF model level input
Initialisation time: 00:00 UTC 21-07-2009
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Case: 21-07-2009
WRF – radar reflectivity
15 UTC
comparison
17 UTC
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Case: 21-07-2009
WRF – wind speed / direction
Maximum wind gust WRF (knots) 21-07-2009
Maximum wind gust observed (knots) 21-07-2009
gusts
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Case: 21-07-2009
ECMWF
MSLP and Precipitation past 3 hours 12 UTC 21-07-2009 MSLP and Precipitation past 3 hours 15 UTC 21-07-2009 MSLP and Precipitation past 3 hours 18 UTC 21-07-2009 MSLP and Precipitation past 3 hours 21 UTC 21-07-2009
mm
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Use within MeteoGroup
Use within MeteoGroup Daniël van Dijke MSc.
•Wind forecasting at hub height in complex terrain•Detection of and warning for severe weather•High resolution downscaling•Regional climate modelling•Tailor made parameters•Air quality applications•Hindcast studies