Clouds - cloud base heights and backscatter profiles from CHM15k ceilometers in the KNMI observation network, 12 second instrument data
This dataset contains backscatter profiles from the CHM15k ceilometer, a single-wavelength, automatic operating at 1064 nm. It includes daily uncalibrated, unvalidated data reported by the instrument at five sites: Cabauw, De Kooy Airport, Groningen Airport Eelde, Maastricht 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.
Simple
- Date (Publication)
- 2020-06-09
- Edition
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2
- Citation identifier
- urn:xkdc:ds:nl.knmi::ceilonet_chm15k_backsct_la1_t12s/v1.0/
- 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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Clouds
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- Keywords
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Aerosol
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Lidar
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Backscatter
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Ceilometer
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Ruisdael
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Dynamic
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Open data
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Core dataset
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- Use limitation
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No use limitations
- Access constraints
- Other restrictions
- Other constraints
- Classification
- Unclassified
- Denominator
- 1
- Language
- English
- Character set
- UTF8
- Topic category
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- Climatology, meteorology, atmosphere
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- Begin date
- 2020-06-22
- End date
- 9999-12-31
- Reference system identifier
- http://www.opengis.net/def/crs/EPSG/0/4326
- Distribution format
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Name Version NetCDF
4
Distributor
- Distributor contact
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Organisation name Individual name Electronic mail address Role Koninklijk Nederlands Meteorologisch Instituut (KNMI)
Point of contact
- Ordering instructions
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Data are stored at KNMI data archive. See contact information for data requests.
Digital transfer options
- OnLine resource
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Protocol Linkage Name landingpage
https://dataplatform.knmi.nl/catalog/datasets/index.html?x-dataset=ceilonet_chm15k_backsct_la1_t12s&x-dataset-version=v1.0 KNMI Data Platform
- Hierarchy level
- Dataset
- Statement
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Raw instrument data from the CHM15k ceilometers in the meteorological observing network, firmware version v1.010 or later. Instrument manual: https://www.lufft.com/fileadmin/lufft.com/07_downloads/1_manuals/Manual_CHM15k_EN_R19.pdf. The available 5-minute NetCDF files are aggregated to a daily file for each instrument .
Metadata
- File identifier
- 3717a205-7961-4438-8276-28ae254e1d91 XML
- Metadata language
- English
- Character set
- UTF8
- Hierarchy level
- Dataset
- Date stamp
- 2026-06-02T08:24:39.010286Z
- 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
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