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.

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Data and Resources

Additional Info

Field Value
Dataset name radar_forecast
Dataset version 1.0
Dataset edition 2
Dataset manager Hidde Leijnse
Maintainer KNMI Data Services
Publication timestamp 2014-12-01T16:01:32Z
Reference system identifier PROJ.4+proj=stere +lat_0=90 +lon_0=0 +lat_ts=60 +a=6378.14 +b=6356.75 +x_0=0 y_0=0
North bound latitude 55.97
East bound longitude 10.86
South bound latitude 48.9
West bound longitude 0.0
Dataset start time 2008-01-01
Dataset end time Unlimited
Update frequency continual
Status onGoing
Identifier urn:xkdc:ds:nl.knmi::radar_forecast/1.0/
License https://creativecommons.org/publicdomain/zero/1.0/
Lineage 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.
Use limitation No use limitations
Last metadata update May 16, 2022, 10:12 (UTC)