Precipitation - radar/gauge 5 minute early reanalysis 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 and manual rain gauges. Time interval is 5 minutes.
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, b) a two-step methodology to construct based on rain gauge data a large-scale and localised adjustment field for correcting precipitation estimates; and c) 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
-
3
- Citation identifier
- urn:xkdc:ds:nl.knmi::nl_rdr_data_recor_5m/1.0/
- Status
- On going
- Point of contact
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Organisation name Individual name Electronic mail address Role Koninklijk Nederlands Meteorologisch Instituut (KNMI)
Point of contact
- Maintenance and update frequency
- Daily
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DG Discovery Properties Vocabulary 1.0
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Precipitation
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Rain
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Radar
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Gauge
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Accumulation
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International radar composite
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IRC
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Water board
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Early
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- Keywords
-
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Open data
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- Use limitation
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No use limitations
- Access constraints
- Other restrictions
- Other constraints
- Classification
- Unclassified
- Spatial representation type
- Grid
- Distance
- 1000 meters
- Language
- English
- Character set
- UTF8
- Topic category
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- Climatology, meteorology, atmosphere
))
- 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
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Name Version HDF5
3.5
- Distributor contact
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Organisation name Individual name Electronic mail address Role Koninklijk Nederlands Meteorologisch Instituut (KNMI)
Point of contact
- Transfer size
- 0.1
- OnLine resource
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Protocol Linkage Name landingpage
https://dataplatform.knmi.nl/catalog/datasets/index.html?x-dataset=nl_rdr_data_recor_5m&x-dataset-version=1.0 KNMI Data Platform
- Hierarchy level
- Dataset
- Statement
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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. The resulting image is corrected by unvalidated daily rainfall accumulations from a manual rain gauge network, using Barnes' Objective Analysis.
Metadata
- File identifier
- f32cf4c8-de08-4ae9-9d12-df1132a7408c XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2025-06-02T12:17:13.206Z
- Metadata standard name
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ISO 19115
- Metadata standard version
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ISO 19115:2003 NL Kernset 1.3 KNMI 1.1
- Metadata author
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Organisation name Individual name Electronic mail address Role Koninklijk Nederlands Meteorologisch Instituut (KNMI)
Point of contact
- Other language
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Language Character encoding Dutch; Flemish English UTF8
Overviews
Spatial extent
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