Abstract

This dataset contains backscatter profiles from the CHM15k ceilometer, a one-wavelength backscatter lidar operating at 1064 nm. It includes daily uncalibrated, unvalidated data reported by the instrument at five sites: Cabauw, De Kooy, Groningen Airport Eelde, Maastricht Aachen Airport and Vlissingen. Retrieved cloud base heights up to 3 layers, sky condition information and aerosol layer height, based on manufacturer algorithms are included. Vertical resolution 10 m, time resolution 12 s.


Metadata

Dataset name ceilonet_chm15k_backsct_la1_t12s
Dataset version v1.0
Status onGoing
Last metadata update May 9, 2025, 07:35 (UTC)
Update frequency daily
License https://creativecommons.org/licenses/by/4.0/
North bound latitude 53.12384
East bound longitude 6.58472
South bound latitude 51.44134
West bound longitude 3.59582
Dataset edition 2
Dataset manager Lidar Team
Maintainer KNMI Data Services
Publication timestamp 2020-06-09T15:00:00Z
Reference system identifier EPSG4326
Dataset start time 2020-06-22
Dataset end time Unlimited
Identifier urn:xkdc:ds:nl.knmi::ceilonet_chm15k_backsct_la1_t12s/v1.0/
Lineage statement Raw instrument data from the CHM15k ceilometers in the meteorological observing network, firmware version v1.010 or later. The available 5-minute NetCDF files are aggregated to a daily file for each instrument.
Use limitation No use limitations
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