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
- Datum (Überarbeitung)
- 2023-02-28
- Identifikator
- RMI-be / belgian_composite_hail
- Bearbeitungsstatus
- Kontinuierliche Aktualisierung
- Überarbeitungsintervall
- Kontinuierlich
- GEMET - INSPIRE themes, version 1.0
-
- Atmosphärische Bedingungen
- Keywords Schlüsselwörter
-
- federal government
- hail
- observation
- Spatial scope
- Zugriffseinschränkungen
- Benutzerdeifinierte Einschränkungen
- Andere Einschränkungen
- Öffentliche Zugang nicht beschränkt
- Nutzungseinschränkungen
- Geistiges Eigentum
- Sicherheitseinstufung
- Unbeschränkt
- Räumliche Darstellungsart
- Raster, Gitter
- Distanz
- 500 http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources /uom/ML_gmxUom.xml#m
- Sprache
- English
- Thematik
-
- Atmosphäre
N
S
E
W
- Anfangszeitpunkt
- 2016-04-01T00:00:00
- Code
- EPSG:4258
- Abgabeformat
-
-
HDF
(
5
)
-
HDF
(
5
)
- Online
-
RMI opendata portal
(
WWW:LINK-1.0-http--link
)
RMI opendata portal
- Bezugsebene
- Datenbestand
- Andere
- dataset
Konsistenz des Wertebereichs
- Testverfahren
- INSPIRE Conformity
Konformitätsergebnis
- Datum (Publikation)
- 2010-12-08
- Erklärung
- See the referenced specification
- Bestanden
- Nein
- Erläuterung
- 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.
- Metadatensatzidentifikator
- RMI_DATASET_BELGIAN_COMPOSITE_HAIL XML
- Sprache
- English
- Hierarchieebene
- Datenbestand
- Datum
- 2023-02-28