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.
Standaard
- Datum (revisie)
- 2023-02-28
- Identifier
- RMI-be / belgian_composite_hail
- Status
- continu geactualiseerd
- Herzieningsfrequentie
- continu
- GEMET - INSPIRE themes, version 1.0
-
- Atmosferische omstandigheden
- Trefwoorden
-
- federal government
- hail
- observation
- Spatial scope
- (Juridische) toegangsrestrictie
- anders
- Overige beperkingen
- Geen beperkingen op openbare toegang
- (Juridische) gebruiksbeperking
- intellectueel eigendom
- Veiligheidsrestricties
- vrij toegankelijk
- Ruimtelijk schema
- grid
- Afstand
- 500 http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources /uom/ML_gmxUom.xml#m
- Taal
- English
- Onderwerp
-
- klimatologie, meteorologie atmosfeer
N
S
E
W
- Begindatum
- 2016-04-01T00:00:00
- Code
- EPSG:4258
- Distributie formaat
-
-
HDF
(
5
)
-
HDF
(
5
)
- OnLine bronnen
-
RMI opendata portal
(
WWW:LINK-1.0-http--link
)
RMI opendata portal
- Niveau kwaliteitsbeschrijving
- dataset
- Anders
- dataset
Domain consistentie
- Name of measure
- INSPIRE Conformity
Resultaat conformiteit met de specificatie
- Datum (publicatie)
- 2010-12-08
- Uitleg
- See the referenced specification
- Indicatie van conformiteit met de specificatie
- Nee
- Algemene beschrijving herkomst
- 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.
- Metadata ID
- RMI_DATASET_BELGIAN_COMPOSITE_HAIL XML
- Taal
- English
- Hierarchisch niveau
- dataset
- Metadata datum
- 2023-02-28