402 results found
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This dataset contains particulate matter mass concentration measurements using a TEOM 1400a sensor unit in combination with Series8500 FDMS monitor. The instrument is located in a Portakabin 500m north from the Cabauw tower.
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This dataset contains X-band (9.475 GHz) weather radar measurements from the TU Delft IRCTR drizzle radar IDRA. It includes plan-position indicators (PPI) of co-polarised reflectivity measurements at horizontal polarisation. IDRA is mounted at the top of the Cabauw tower and is scanning horizontally at a fixed low elevation angle, covering a radius of 15 km (30 m range resolution) or 1.5 km (3 m r…
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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.
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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/
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This dataset contains post-processed X-band (central frequency of 9.475 GHz) weather radar data from the TU Delft IRCTR drizzle radar IDRA. It includes plan-position indicators (PPI) of the specific differential phase, the differential backscatter phase, and the estimated rainfall rate. IDRA is mounted at the top of the Cabauw tower at 213 m agl., and is scanning horizontally at a fixed low elevat…
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Volumetric soil moisture contents have been measured daily between 6 november 2003 and 19 August 2010 with a TDR set-up developed by Heimovaara and Bouten consisting of six arrays of six sensors between 5 and 73 cm below the soil surface. The six arrays were positioned on the perimeter of a circle with a diameter of 9 m with equal distances. The TDR was calibrated by taking 6 undisturbed soil samp…
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Discharge has been measured at three locations. At these locations, measurement weirs have been installed in May 2007 to estimate discharges accurately. A V-notch weir is used to measure the inflow of surface water into the catchment near the Wielse Kade (Qin). Trapezoidal Rossum weirs have been installed to measure outflow (Qout1 and Qout2), of which the stage-discharge relations have been obtain…
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Discharge has been measured at three locations. At these locations, measurement weirs have been installed in May 2007 to estimate discharges accurately. A V-notch weir is used to measure the inflow of surface water into the catchment near the Wielse Kade (Qin). Trapezoidal Rossum weirs have been installed to measure outflow (Qout1 and Qout2), of which the stage-discharge relations have been obtain…
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Groundwater levels at Cabauw have been measured since August 2003 in two fields south of the tower. Nine piezometers were placed in a row. Initially, 6 of those piezometers contained pressure transducers (of the brand Keller) to measure levels automatically every 4 hours. On 9 July 2010, the temporal resolution was increased to hourly. Several sensors have stopped working since 2003. Piezometers t…
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Degree days are determined by the effective daily mean temperature (Teff). Teff is calculated with the daily mean temperature (TG) and the daily mean windspeed (FG). Teff = TG - 2/3 * FG. Degree days = sum of the days with (max[(14 - Teff),0]).
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