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Belgian risk of hail composite

Hail products are derived from the observed vertical profiles of radar reflectivity and the NWP vertical profiles of temperature. Three types of products are generated. poh : probability of hail of any size (larger than 0.5 cm diameter)expressed in %. posh : probability of severe hail(larger than 2cm)expressed in %. mesh : maximum expected size of hailexpressed in mm of hailstone diameter. All products are generated every 5 minutes. This product is not publically available yet.

Simple

Date (Revision)
2024-10-01
Identifier
RMI-be / belgian_composite_hail
Status
On going
Point of contact
  Royal Meteorological Institute of Belgium
Owner
  Royal Meteorological Institute of Belgium
Maintenance and update frequency
Continual
GEMET - INSPIRE themes, version 1.0
  • Atmospheric conditions
Keywords
  • federal government
  • hail
  • observation
Spatial scope
  • National
Access constraints
Other restrictions
Other constraints
No limitations on public access
Use constraints
Intellectual property rights
Classification
Unclassified
Spatial representation type
Grid
Distance
500  http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources /uom/ML_gmxUom.xml#m
Metadata language
English
Topic category
  • Climatology, meteorology, atmosphere
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Begin date
2016-04-01T00:00:00
Unique resource identifier
EPSG:4258
Distribution format
  • HDF ( 5 )

OnLine resource
RMI opendata portal ( WWW:LINK-1.0-http--link )

RMI opendata portal

Hierarchy level
Dataset
Other
dataset

Domain consistency

Name of measure
INSPIRE Conformity

Conformance result

Date (Publication)
2010-12-08
Explanation
See the referenced specification
Pass
No
Statement
Hail detection module is an implementation of two hail detection algorithms: of Witt and of Waldvogel (Waldvogelet al., 1979). The module takes radar observations and temperature information and estimates probability of hail (POH, %), probability of severe hail (POSH, %) and maximum expected size of hail (MESH, mm). The implementation of the Waldvogel algorithm is based on the Holleman s equation (I. Holleman, 2001), which was verified for Belgium by Delobbe et al. (2003). The POH is derived in the algorithm from the presence of a substantial updraft detected above the freezing level (0º-isoterm). The implementation of the Witt algorithm is based on the weighted integration of the reflectivity values between the heights of 0º-isoterm and -20º-isotherm (Witt et al., 1998). This algorithm provides POSH and MESH estimates.
File identifier
RMI_DATASET_BELGIAN_COMPOSITE_HAIL XML
Metadata language
English
Hierarchy level
Dataset
Date stamp
2024-10-01
Point of contact
  Royal Meteorological Institute of Belgium
http://www.meteo.be
 
 

Overviews

Spatial extent

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Keywords


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