Abstract

This dataset contains calibrated attenuated backscatter profiles from the CHM15k ceilometer, a single-wavelength, automatic operating at 1064 nm. It includes calibrated, unvalidated files for 33 sites in the nationwide ceilometer network. Level 2 data processing is performed by the EUMETNET E-PROFILE ALC data hub. Vertical resolution: 30 m, time resolution: 5 minutes.

Supplemental information

Supplemental information about the EUMETNET E-PROFILE ALC data hub: https://www.eumetnet.eu/observations/vertical-profile-observations/

Data quality notice

Due to technical issues, Level 2 data for the CHM15k instruments in the nationwide ceilometer network are unavailable for the period 16 June to 13 July 2026. We are currently investigating whether the missing data can be recovered and made available at a later stage.


Metadata

Dataset name ceilonet_chm15k_backsct_la1_t05
Dataset version v2.0
Status onGoing
Update frequency continual
File formats NetCDF
Spatial representation type undefined
License https://creativecommons.org/licenses/by/4.0/
North bound latitude 55.7
East bound longitude 7.4
South bound latitude 12.0
West bound longitude -68.5
Dataset edition 2
Dataset manager Lidar Team
Maintainer KNMI Data Services
Publication date 2025-08-18
Reference system identifier EPSG4326
Dataset start time 2025-08-01
Dataset end time 9999-12-31
Identifier urn:xkdc:ds:nl.knmi::ceilonet_chm15k_backsct_la1_t05/v2.0/
Lineage statement Level 2 data processed by the EUMETNET E-PROFILE ALC data hub, based on raw instrument data from the CHM15k ceilometers in the meteorological observing network.
Use limitation No use limitations
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