Property:Description (description)
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Description An account of the resource. (en)
Label: Description (en)
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The first field campaign from the Tracing Convective Momentum Transport in Complex Cloudy Atmospheres experiment project (CMTRACE) took place in Cabauw, the Netherlands, between September 13th and October 3rd 2021. During this field campaign, two cloud radars and one wind lidar were operated with a similar scanning strategy for deriving wind speed and direction profiles from near the surface up to cloud tops. Here, we provide the daily Level 2 data from the campaign. At this level, several processing steps were applied to the original data from each instrument to minimize the differences between the sampled volumes and temporal and spatial resolution to generate merged profiles of wind speed and direction. Those processing steps are described in http://dx.doi.org/10.5194/essd-15-769-2023.
'''Variables''':
horizontal wind direction;
horizontal wind speed;
zonal wind;
meridional wind;
vertical wind speed;
lidar relative beta;
radar vertical doppler velocity;
radar equivalent reflectivity;
rain rate; +
Time-height profiles of precipitation by TU Delft's Micro Rain Radar (MRR-PRO) manufactured by Metek GmbH. MRR001 is part of the Ruisdael mobile station and frequently changes location. When it is not used for field campaigns, the radar is placed at Green Village Delft. Time interval of measurements is 10 seconds with a range resolution of 35 meters, max range of 4480 meters and 64 Doppler spectral bins. The raw data are provided in the form of hourly NetCDF files. +
Time-height profiles of precipitation by TU Delft's Micro Rain Radar (MRR-PRO) by Metek GmbH (SN 0512067699), placed at KNMI's Remote Sensing Site in Cabauw. Time interval of measurements is 10 seconds with a range resolution of 35 meters, max range of 4480 meters and 64 Doppler spectral bins. The raw data are provided in the form of hourly netCDF files. +
Dataset containing hourly data files provided by Ruisdael Observatory's Metek Micro Rain Radar (SN 0513108314) placed at Westmaas. Time interval of measurements is 10 seconds and the range resolution is preferred to be set to 35 meters. +
Dataset containing hourly data files provided by Ruisdael Observatory's Metek Micro Rain Radar (SN 0513108314) placed at Westmaas. Time interval of measurements is 10 seconds and the range resolution is preferred to be set to 35 meters. +
Dataset containing hourly data files provided by Ruisdael Observatory's Metek Micro Rain Radar (SN 0513108318) placed at De Zweth. Time interval of measurements is 10 seconds and the range resolution is preferred to be set to 35 meters +
The cloud radar LARA (Lutjewad Atmospheric RAdar) is a 94 GHz scanning polarimetric FMCW (Frequency Modulated Continuous Wave) radar, which profiles clouds and precipitation in the troposphere. This cloud radar is located at Lutjewad Atmospheric Site. Its specifications can be changed to address different measurement objectives. The maximum range is 12 km and the time, range and Doppler resolution are a few seconds, about 30 m and a few cm/s, respectively. +
The cloud radar MARA (Mobile Atmospheric RAdar) is a 94 GHz scanning polarimetric FMCW (Frequency Modulated Continuous Wave) radar, which profiles clouds and precipitation in the troposphere. By default, the radar is placed at KNMI's Remote Sensing Site in Cabauw, when it does not participate to a campaign. Its specifications can be changed to address different measurement objectives. The maximum range is 12 km and the time, range and Doppler resolution are a few seconds, about 30 m and a few cm/s, respectively. +
The cloud radar MARA (Mobile Atmospheric RAdar) is a 94 GHz scanning polarimetric FMCW (Frequency Modulated Continuous Wave) radar, which profiles clouds and precipitation in the troposphere. By default, the radar was placed at Green Village, Delft, when it did not participate to a campaign. Its specifications can be changed to address different measurement objectives. The maximum range is 12 km and the time, range and Doppler resolution are a few seconds, about 30 m and a few cm/s, respectively. +
The cloud radar CLARA (CLoud Atmospheric RAdar) is a dual-frequency (35 and 94 GHz) scanning polarimetric FMCW (Frequency Modulated Continuous Wave) radar, which profiles clouds and precipitation in the troposphere. The radar is located at KNMI's former Wind Profiler Site in Cabauw. Its specifications can be changed to address different measurement objectives. The maximum range is 12 km and the time, range and Doppler resolution are a few seconds, about 30 m and a few cm/s, respectively. +
In-situ measurements of raindrop size distributions, fall velocities, drop number concentrations and surface rain rates recorded by an OTT Parsivel2 disdrometer named "PAR001" at the remote sensing site in Cabauw. Note that "PAR001" is co-located with another identical disdrometer called "PAR002". This co-location can be used to cross-check data, perform quality control and/or assess measurement uncertainty due to sensor calibration, random sampling effects and environmental effects such as wind speed/direction which are known to substantially affect the accuracy of optical disdrometers. +
In-situ measurements of raindrop size distributions, fall velocities, drop number concentrations and surface rain rates recorded by an OTT Parsivel2 disdrometer named "PAR002" at the remote sensing site in Cabauw. Note that "PAR002" is co-located with another identical disdrometer called "PAR001". This co-location can be used to cross-check data, perform quality control and/or assess measurement uncertainty due to sensor calibration, random sampling effects and environmental effects such as wind speed/direction which are known to substantially affect the accuracy of optical disdrometers. +
In-situ measurements of raindrop size distributions, fall velocities, drop number concentrations and surface rain rates recorded by an OTT Parsivel2 disdrometer named "PAR003" at the Green Village site in Delft. Note that the Green Village site is different from the other Ruisdael sites. Its primary purpose is to allow researchers to test sensors, perform calibration and develop new hardware/software solutions. The Green Village also serves as a temporary home basis for all the mobile sensors used during field campaigns. Due to the special nature of this site, data quality, reliability and availability may be lower than at other locations. There are also some nearby obstacles such as trees and fences which may affect the accuracy of the precipitation measurements depending on local wind patterns. +
In-situ measurements of raindrop size distributions, fall velocities, drop number concentrations and surface rain rates recorded by an OTT Parsivel2 disdrometer named "PAR004" in Westmaas, The Netherlands. Westmaas is a village in the Dutch province of South Holland located approximately 15 km south of the city centre of Rotterdam, south of the old Meuse. The same site also features a micro-rain radar "MRR003_Westmaas" (since June 2022) and a Davis weather station "Davis003_Westmaas" (since May 2023). All sensors are placed on top of an air quality monitoring container belonging to TNO, at a height of approx. 4 meters. The container is located approximately 1.5 km to the West of the village of Westmaas, in a predominantly flat and rural area. +
In-situ measurements of raindrop size distributions, fall velocities, drop number concentrations and surface rain rates recorded by an OTT Parsivel2 disdrometer named "PAR005" in De Zweth, The Netherlands. Situated approximately 7 km to the North West of Rotterdam, and 4 km South East of Delft campus, Zweth is a small town along the Schie river, at the intersection of the historical areas of Delfland and Schieland. The same site also features a micro-rain radar "MRR004_DeZweth" (since February 2022), replaced by "MRR006_DeZweth" (since August 2022) and a Davis weather station "Davis003_DeZweth" (since May 2023). All sensors are placed on top of an air quality monitoring container belonging to TNO, at a height of approx. 4 meters. +
In-situ measurements of raindrop size distributions, fall velocities, drop number concentrations and surface rain rates recorded by an OTT Parsivel2 disdrometer named "PAR006" in Slufter, The Netherlands. Located in the Maasvlakte Rotterdam, The Slufter is a large-scale storage site for contaminated sludge in the southwestern part of the Rotterdam Maasvlakte, approximately 31 km West of the city center of Rotterdam. Along the ring dike of the Slufter, several wind turbines belong to the Windpark Slufterdam are providing electricity for the region. The same site also features a micro-rain radar "MRR005_Slufter" (since March 2022). All sensors are placed on top of an air quality monitoring container belonging to TNO, at a height of approx. 4 meters. The rough climate conditions near the coast of the North Sea, with high winds, salt, and sand creates a very challenging environment for long-term weather observations. Consequently, data availability tends to be lower than at other sites, due to frequent maintenance and technical issues. +
In-situ measurements of raindrop size distributions, fall velocities, drop number concentrations and surface rain rates recorded by an OTT Parsivel2 disdrometer named "PAR007" at a height of 180 meters in the meteorological tower of Cabauw. This highly unusual location for a precipitation sensor was specifically chosen to study the effect of wind, turbulence and shielding on raindrop size distributions, as well as to quantify the vertical variability of rain near the surface. Two other disdrometers "PAR001_Cabauw" and "PAR002_Cabauw" located on the ground, approximately 200 meters away can be used as a reference to assess biases and measurement uncertainty. The site also features a vertically profiling micro-rain radar named "MRR002_Cabauw". +
In-situ measurements of raindrop size distributions, fall velocities, drop number concentrations and surface rain rates recorded by an OTT Parsivel2 disdrometer named "PAR009" at a height of 3 meters at the Lutjewad atmospheric measurement station on the northern coast of the Netherlands, approximately 30 km northeast from the city of Groningen. The rural landscape to the south consists mainly of pasture and cropland with patches of forested land with livestock dominated by dairy cows and sheep. Set up directly behind the Wadden Sea dike, the site features a 60 meter tall sampling tower, a 10 meter platform, a laboratory building, and an aerosol laboratory container. The station monitors greenhouse gases and trace gas species, sampling aerosol number, size, and composition at different altitudes. Lutjewad is part of the European research infrastructure ICOS, providing continuous greenhouse gas concentrations. The coastal location means that the site samples relatively clean marine background air in conditions of northerly winds and more polluted air masses during conditions of south-easterly and south-westerly winds. +
In-situ measurements of drop size distributions and rain rates at Lutjewad, with a temporal resolution of 1 minute, acquired by a Thies optical disdrometer. +
Description: In-situ measurements of temperature, pressure, relative humidity, rain, solar irradiance and wind (at a temporal resolution of 1 minute) by a Davis Vantage Pro2 weather station named "Davis-001" on the roof of the Erasmus MC building in Rotterdam, The Netherlands, at a height of approx. 112 meters.
This station is part of the Rotterdam Atmospheric Measurement Network (RAMN), funded with the help of TU Delft strategic funds, in collaboration with the Ruisdael Observatory.
Note: The station was installed on June 13, 2023 but suffered major technical issues during the first two months. It was then damaged during a storm on July 14, 2023 and had to be brought back to TU Delft. As a result, only a few days of observation are available for now. +
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