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 (Révision)
- 2023-02-28
- Identificateur
- RMI-be / belgian_composite_hail
- Etat
- Mise à jour continue
- Fréquence de mise à jour
- Continue
- GEMET - INSPIRE themes, version 1.0
-
- Conditions atmosphériques
- Mots clés
-
- federal government
- hail
- observation
- Spatial scope
- Contraintes d'accès
- Autres restrictions
- Autres contraintes
- Pas de restrictions concernant l'accès public
- Contraintes d'utilisation
- Droit de propriété intellectuelle / Droit patrimonial
- Restrictions de manipulation
- Non classifié
- Type de représentation spatiale
- Raster
- Distance de résolution
- 500 http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources /uom/ML_gmxUom.xml#m
- Langue
- English
- Catégorie ISO
-
- Climatologie/Météorologie/Atmosphère
N
S
E
W
- Date de début
- 2016-04-01T00:00:00
- Code
- EPSG:4258
- Format (encodage)
-
-
HDF
(
5
)
-
HDF
(
5
)
- Ressource en ligne
-
Portail opendata de l'IRM
(
WWW:LINK-1.0-http--link
)
Portail opendata de l'IRM
- Niveau
- Jeu de données
- Autre
- dataset
Cohérence du domaine de valeurs
- Nom du test
- INSPIRE Conformity
Résultat de conformité
- Date (Publication)
- 2010-12-08
- Explication
- See the referenced specification
- Degré de conformité
- Non
- Généralités sur la provenance
- 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.
- Identifiant de la fiche
- RMI_DATASET_BELGIAN_COMPOSITE_HAIL XML
- Langue
- English
- Type de ressource
- Jeu de données
- Date des métadonnées
- 2023-02-28