Soilmoisture - daily values taken with a TDR array at midnight local time at Cabauw

Volumetric soil moisture contents have been measured daily between 6 november 2003 and 19 August 2010 with a TDR set-up developed by Heimovaara and Bouten consisting of six arrays of six sensors between 5 and 73 cm below the soil surface. The six arrays were positioned on the perimeter of a circle with a diameter of 9 m with equal distances. The TDR was calibrated by taking 6 undisturbed soil samples (diameter: 20 cm; height: 20 cm) into the lab and comparing independently measured volumetric soil moisture contents to the TDR measurements. Measurements were performed at midnight local time, without taking daylight savings time into account.

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Data and Resources

Additional Info

Field Value
Author Claudia Brauer
Maintainer KNMI Data Services
Version v1.0
Last Updated July 29, 2021, 11:17 (UTC)
Created July 29, 2021, 11:17 (UTC)
Dataset name cesar_tdr_soilmoisture_la1_t1d
Dataset version v1.0
East bound longitude 4.928
File identifier db5612ee-57a6-4e78-982d-0c4859f74ecf
From 2003-11-06T00:00:00
Identifier urn:xkdc:ds:nl.knmi::cesar_tdr_soilmoisture_la1_t1d/v1.0/
Linage statement not specified
North bound latitude 51.968
Publication timestamp 2019-10-02T11:00:07
Reference system identifier EPSG4326
South bound latitude 51.968
Status completed
Supplemental information This dataset was initial uploaded and distributed via CESAR Database System, CDS ( The full name in CDS was cesar_tdr_soilmoisture_la1_t1d, v1.0 A dataset description document can be downloaded from
Until 2010-08-09T23:59:59
Update frequency notPlanned
Use limitation no limitations
West bound longitude 4.928