Abstract

Gridded files of radar reflectivities at 1500 m over the Netherlands and surrounding area measured by two radars in Herwijnen and Den Helder. Time interval is 5 minutes. See data set radar_tar_refl_composites/1.0 for an archive that goes back to 2008.


Metadata

Dataset name radar_reflectivity_composites
Dataset version 2.0
Status onGoing
Last metadata update December 5, 2023, 14:44 (UTC)
Update frequency continual
License https://creativecommons.org/licenses/by/4.0/
North bound latitude 55.97
East bound longitude 10.86
South bound latitude 48.9
West bound longitude 0.0
Dataset edition 4
Dataset manager Hidde Leijnse
Maintainer KNMI Data Services
Publication timestamp 2015-07-14T11:10:12Z
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
Dataset start time 2008-01-01
Dataset end time Unlimited
Identifier urn:xkdc:ds:nl.knmi::radar_reflectivity_composites/2.0/
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. The time stamp in the file name corresponds to the start time of the lowest radar scan.
Use limitation No use limitations
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