Precipitation - radar/gauge 5 minute real-time accumulations over the Netherlands

Gridded files of radar-derived 5 minute precipitation accumulations, corrected by rain gauge data. Radar data over the Netherlands and surrounding area measured by Dutch, Belgian, and German radars are corrected by available data from automatic rain gauges. Time interval is 5 minutes. See data set nl_rdr_data_rtcor_5m_tar/1.0 for an archive that goes back to 2018.

Starting with data from 31 January 2023 - 10.45 UTC onwards, this dataset is created using improved algorithms. This includes correction for signal attenuation, correction for vertical variation of precipitation, correction for fast-moving showers and use of uncertainty information in merging data from multiple radars.

Starting with data from 18 November 2024 - 14.40 UTC onwards, this dataset is created using improved methodologies. This includes a) the usage of additional rain gauge data from water authorities and water companies, and b) reducing the quality indication of data of the Herwijnen radar of the lowest two elevations and for a small set of azimuth angles, to mitigate beam blockage due to trees and wind turbines.

Simple

Date (Publication)
2018-12-06
Edition

4
Citation identifier
urn:xkdc:ds:nl.knmi::nl_rdr_data_rtcor_5m/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

  • Gauge

  • Accumulation

  • International radar composite

  • IRC

  • Water board

  • Realtime
Keywords

  • 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
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Begin date
2018-12-07
End date
9999-12-31
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=nl_rdr_data_rtcor_5m&x-dataset-version=1.0

KNMI Data Platform
Hierarchy level
Dataset
Statement

Radar reflectivities are measured by radars in the Netherlands, Belgium, and Germany. Single images per radar at 1500 m height are generated by linearly interpolating radar reflectivities in altitude. Radar reflectivities are then converted to rainfall intensities by using the Z=200R^1.6 formula. A mean bias correction factor is derived based on the most recent 1 hour rainfall accumulations from automatic rain gauges. The resulting radar rainfall estimates from all radars are then combined to a single product by taking a weighted average. The weigths are a function of the distance of a given point to the radar.

Metadata

File identifier
4804f9c2-46da-4007-9408-dc22788592eb XML
Metadata language
English
Character set
UTF8
Hierarchy level
Dataset
Date stamp
2025-05-02T09:31:24.735Z
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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Keywords



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