Abstract

Archive of 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. Data have been archived in one .tar file per day.


Metadata

Dataset name radar_tar_refl_composites
Status onGoing
Last metadata update April 6, 2022, 13:04 (UTC)
Update frequency daily
License https://creativecommons.org/publicdomain/zero/1.0/
North bound latitude 55.97
East bound longitude 10.86
South bound latitude 48.9
West bound longitude 0.0
Dataset version 1.0
Dataset edition 2
Dataset manager Hidde Leijnse
Maintainer KNMI Data Services
Publication timestamp 2014-10-01T11:37:22Z
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_tar_refl_composites/1.0/
Lineage statement Radar reflectivities are measured by both radars (De Bilt at 52.1017 N, 5.1783 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
Show more Show less

Resources