Property:Description (description)
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Description An account of the resource. (en)
Label: Description (en)
A
This dataset collects all the aerosol optical property profiles at the aerosol remote sensing CBW station (Cabauw - Netherlands). This dataset is incremental: data collected are added as soon as a new observation is collected and added to the ACTRIS/EARLINET database.
Variables: Attenuated backscatter profile; Volume depolarization profile, Particle backscatter coefficient profile, Particle extinction coefficient profile, Lidar ratio profile, Ångström exponent profile, Backscatter-related Ångström exponent profile, Particle depolarization ratio profile. +
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The CINDI campaign (Cabauw Intercomparison Campaign of Nitrogen Dioxide measuring Instruments) is a CEOS, GEOMON and NDACC initiative. The main objective of this campaign is to intercompare the NO2 measuring instruments that can be used for validation of tropospheric NO2 from satellites. Many different in-situ and remote sensing instruments participated. +
CINDI stands for Cabauw Intercomparison of Nitrogen Dioxide Measuring Instruments and was focussed on the comparison of a number of ground-based DOAS instruments (Differential Optical Absorption Spectroscopy) for measuring atmospheric Nitrogen Dioxide (NO2). +
Third Cabauw Intercomparison of Nitrogen Dioxide measuring Instruments, which took place at the Cabauw Experimental Site for Atmospheric Research (CESAR) from 21 May until 24 June 2024. CESAR is one of the main facilities of the Dutch Ruisdael Observatory located midway in between the cities of Rotterdam and Utrecht, and managed by KNMI.
Over 100 researchers from 18 countries participated in CINDI-3, operating 32 UV-Vis DOAS instruments to compare and intercalibrate measurements of air pollutants and to support the validation of satellite measurements from space-borne instruments such as Sentinel-5p/TROPOMI. CINDI-3 is the third intercomparison campaign of this kind. The overall campaign planning and coordination was carried out by a steering committee, led by BIRA-IASB (Royal Belgian Institute for Space Aeronomy), coordinating the CINDI-3 intercomparison schedule and all additional activities such as the mobile and aircraft observations.
The main science objectives of CINDI-3 are the following:
- To assess the consistency of slant column measurements of several key target species (NO2, ozone, O4 and HCHO) of relevance for the validation of S5P and the future ESA atmospheric
Sentinels, through coordinated operation of a large number of DOAS and MAXDOAS instruments from all over the world.
- To study the relationship between remote-sensing column- and profile-measurements of NO2, HCHO and ozone and reference in-situ concentration measurements of the same species.
- To investigate the horizontal representativeness of MAXDOAS measuring systems in view of their use for the validation of satellite tropospheric measurements featuring ground pixel areas in the range of 25-50 km2.
CINDI-3 was organized as part of the ACTRIS-CREGARS Topical Center for trace gas remote sensing, within the framework of the collaboration between ACTRIS and NDACC, and conducted with additional support from ESA, NASA and from the EU Horizon2020 ATMO-ACCESS project (https://www.atmo-access.eu/).
Additionally, the campaign was supported by KNMI.
The following instruments were used:
- Static MAXDOAS and zenith-sky DOAS instruments
- In situ ICAD instrument
- Brewer
- Ozone sondes
- NO2 sondes
- Lidar systems: The multiwavelength Raman lidar CAELI, UV-depolarisation lidar, Ceilometer, ESA EMORAL system, SMOL tropospheric ozone differential absorption lidar, NO2 differential absorption lidar, Mobile Aerosol Monitoring System (MAMS) and scanning AERONET photometer
- Mobile DOAS instruments
- Airborne measurements
- Satellite data
Tracing convective momentum transport in complex cloudy atmospheres. +
Tracing convective momentum transport in complex cloudy atmospheres. +
Tracing convective momentum transport in complex cloudy atmospheres. +
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Tropospheric columns and profiles of NO2, HCHO and aerosol, retrieved from Multi-Axes DOAS measurements in Cabauw-NL. Temporal resolution is approximately 4/hour for no2 and aerosol, 1/hour for HCHO. The profiles have limited vertical resolution, with 2-4 degrees of freedom. The data can be found here: https://www-air.larc.nasa.gov/missions/ndacc/data.html?RapidDelivery=rd-list +
Tropospheric columns and profiles of NO2, HCHO and aerosol, retrieved from Multi-Axes DOAS measurements in De Bilt-NL. Temporal resolution is approximately 4/hour for no2 and aerosol, 1/hour for HCHO. The profiles have limited vertical resolution, with 2-4 degrees of freedom. The data can be found here: https://www-air.larc.nasa.gov/missions/ndacc/data.html?RapidDelivery=rd-list +
Tropospheric and total columns of NO2 and total columns of O3, retrieved from Pandora measurements in Cabauw-NL. Temporal resolution is approximately 4/hour. The data can be found here: http://data.pandonia-global-network.org/Cabauw/Pandora118s1/L2/ +
Caeli is the CESAR Water Vapour, Aerosol and Cloud Lidar and is a multiwavelength, high-performance Raman lidar, capable of providing round-the clock measurements. It is deployed at the Cabauw Experimental Site for Atmospheric Research (CESAR)
This dataset contains ... +
2-dimensional clouddata (IR brightness temp. and cloudmask) and cloudcover (total, high, middle and low) derived from sky brightness temperatures recorded with a scanning pyrometer. For more information about CESAR: https://ruisdael-observatory.nl/cesar/ +
Uncalibrated attenuated backscatter at 30 seconds and 15 meters resolution. +
Four cloud cover parameters are retrieved continuously from sky temperature measurements by a scanning infrared radiometer (NubiScope). These parameters are resp. total, low -, middle - and high level cloud cover. Only measurements 20 degrees above horizon are used to create a hemispherical cloud mask. The temperature deviation of a sky pixel from an estimated background sky temperature determines whether a pixel is considered to be cloudy or clear sky. For more information about CESAR: https://ruisdael-observatory.nl/cesar/ +
KNMI Clouds - cloudbase heights and backscatter profiles from CT75 ceilometer at 30 s interval at Cabauw +
Dataset contains backscatter profiles and system status signals from CT75 ceilometer at 30 s time resolution. Operational retrieved cloud base heights (up to 3 levels) are included. Vertical resolution: backscatter 30 m, for cloud base 15 m. +
This dataset contains horizontally averaged statistics from unvalidated Dutch Atmospheric Large Eddy Simulation (DALES) forecasts with a lead time of 24h. The LES is ran using the Ruisdael branch of DALES (version 4.3) and are forced by HARMONIE 43. The domain with a horizontal extent of 15 km x 15 km and vertical range of 13.5 km is centred around Cabauw. The version of the unvalidated Ruisdael DALES can be accessed here: https://github.com/dalesteam/dales. The runs have a horizontal resolution of ~76m (in both directions) and a vertical resolution decreasing with height from 20 m to 150 m. Homogenous land cover is applied to the domain. Code can be accessed through: https://github.com/dalesteam/dales.
'''Note:''' the latest version of the unvalidated Ruisdael DALES can be accessed here: https://github.com/dalesteam/dales. The runs have a horizontal resolution of ~76m (in both directions) and a vertical resolution decreasing with height from 20 m to 150 m. Homogenous land cover is applied to the domain.
Bounding box is 51.7665 - 52.9013 N, 4.8167 - 5.0357 E +
A ground-based UV-polarisation lidar was deployed to infer cloud droplet sizes and droplet number concentrations near the cloud base of cumulus clouds over Ascension Island. The measurements were part of the 2016 en 2017 ASCII campaigns to study aerosol-cloud interactions in the stratocumulus to cumulus transition zone of the southeast Atlantic Ocean. Measurements of uncalibrated attenuated backscatter were acquired at 30 seconds and 15 meters resolution. +
Lufft CHM 15k ceilometer +
Together with the cloud radar and microwave radiometer operated by TU-Delft in Lutjewad, the KNMI operated UV-lidar completes the suite of instruments minimally needed to contribute to a ACTRIS cloud remote sensing station. The lidar also is a start for aerosol remote sensing at the station.
Dataset is on request and soon will be published on dataplatform.knmi.nl. +
KNMI Meteo profiles - unvalidated tower profiles of wind, dew point, temperature and visibility at 10 minute interval at Cabauw +
Unvalidated meteorological profile observations of wind speed, wind direction, temperature, dew point and visibility from the 200m Cabauw tower on a 10-minute basis. The data is updated in realtime, so the file of the current day is updated every 10 minutes. For more information about how to interpret the data, please read: https://cdn.knmi.nl/knmi/pdf/bibliotheek/knmipubTR/TR384.pdf. +
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