Precipitation - radar 5 minute forecasted radar reflectivity composites over the Netherlands up to 2 hours ahead

Forecasts of radar reflectivities at 1500 m over the Netherlands and surrounding area measured by two radars in Herwijnen and Den Helder. Forecast interval is 5 minutes, with lead times up to 2 hours.

Date (Publication): 2014-12-01

Edition: 2

Citation identifier: urn:xkdc:ds:nl.knmi::radar_forecast/1.0/

Status: On going

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Koninklijk Nederlands Meteorologisch Instituut (KNMI)		opendata@knmi.nl	Point of contact

Maintenance and update frequency: Continual

DG Discovery Properties Vocabulary 1.0

Precipitation
Rain
Radar
Forecast
Nowcast
Meteorological

Keywords

HVD
Dynamic
Open data
Popular

Use limitation: No use limitations

Access constraints: Other restrictions

Other constraints: https://creativecommons.org/licenses/by/4.0/deed.nl

Classification: Unclassified

Spatial representation type: Grid

Distance: 1000 meters

Language: English

Character set: UTF8

Topic category

Climatology, meteorology, atmosphere

Begin date: 2008-01-01

End date: 9999-12-31

Vertical extent

Minimum value: 1500.0

Maximum value: 1500.0

Reference system identifier: http://www.opengis.net/def/crs/PROJ.4/0/+proj=stere +lat_0=90 +lon_0=0 +lat_ts=60 +a=6378.14 +b=6356.75 +x_0=0 y_0=0

Distribution format

Name	Version
HDF5	3.5

Distributor contact

Organisation name	Individual name	Electronic mail address	Role
Koninklijk Nederlands Meteorologisch Instituut (KNMI)		opendata@knmi.nl	Point of contact

Transfer size: 0.1

OnLine resource

Protocol	Linkage	Name
landingpage	https://dataplatform.knmi.nl/catalog/datasets/index.html?x-dataset=radar_forecast&x-dataset-version=1.0	KNMI Data Platform

Hierarchy level: Dataset

Statement: Radar reflectivities are measured by both radars (Herwijnen at 51,8369 N, 5,1381 E and Den Helder at 52.9533 N, 4.7900 E) in scans with elevation angles of 0.3, 1.1, 2.0, and 3.0 degrees. These scans are used to generate a single image per radar at 1500 m by linearly interpolating radar reflectivities in altitude. These two radar images are then combined to a single image by taking a weighted average of the radar reflectivities. The weigths are a function of the distance of a given point to the radar. Radar reflectivity fields are forecast by extrapolating the current radar field using advection velocitite derived from previous radar reflectivity fields.

Metadata

File identifier: 0bf067dd-9928-4d02-929e-3632b3f93363 XML

Metadata language: English

Character set: UTF8

Hierarchy level: Dataset

Date stamp: 2025-03-03T13:56:57.534Z

Metadata standard name: ISO 19115

Metadata standard version: ISO 19115:2003 NL Kernset 1.3 KNMI 1.1

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Koninklijk Nederlands Meteorologisch Instituut (KNMI)		opendata@knmi.nl	Point of contact

Other language

Language	Character encoding
Dutch; Flemish
English	UTF8

Overviews

Spatial extent

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