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Identification of hail cases in the HBT area using Vaisala's HydroClass ™ -product

Identification of hail cases in the HBT area using Vaisala's HydroClass ™ -product. Reino Keränen Jari Tuovinen Tuomo Bergman Janne Ylläsjärvi. Motivation. Test HydroClass™-product in two different hail/graupel-cases. Learn to use HTB-data. Research methods.

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Identification of hail cases in the HBT area using Vaisala's HydroClass ™ -product

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  1. Identification of hail cases in the HBT area using Vaisala's HydroClass ™ -product Reino Keränen Jari Tuovinen Tuomo Bergman Janne Ylläsjärvi

  2. Motivation • Test HydroClass™-product in two different hail/graupel-cases. • Learn to use HTB-data

  3. Research methods • Case selection from eye-witness reports. • Comparision of HydroClass™ data with other Vaisala/HY dual-pol. radar data. • Resolving Synoptic situation (NCEP-reanalysis, SYNOP/testbed-surface mesourements). • Effort to find hail observations on WXT510-station data.

  4. Sample data 15.05.2006 5 cm layer of graupel in Paippinen Reflectivity HydroClass

  5. Sample data

  6. What we hope to learn? • HydroClass ™ capabilities to detect hail/graupel in varying conditions. • WXT510-station possibilities to detect hail/graupel.

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