Disdrometer

To close the gap on rain size distribution and velocity we installed 2017 a disdrometer at the BCO. The instrument was an Eigenbrodt ODM470. As we had several problems with the instrument and the data we stopped operation in 2022.

In 2023 we installed a new disdrometer OTT Parsivel2 (we also installed 2 of these disdrometer on board of the RV Meteor for the BOWTIE-campaign in 2024). As this unit is not rotating into the wind we installed it facing to the main wind direction (Friedels estimation….).

In September 2025 we installed two more Parsivel2 at the BCO mounted on the tesbed container, one facing to the main wind direction and the second perpendicular to this direction.

The unit is running with a temporal resolution of 1 min with these variables: Date | Time | Rain Intensity (mm/h) | Rain amount accumulated (mm) | Weather Code | Radar Reflectivity (dBz) | MOR visibility (m) | Sample Interval (s) | Signal amplitude | Number of particles | Temperatur housing (DegC) | Sensor serial number | Firmware IOP | Heating current (A) | Power supply voltage (V) | Sensor status | Station name | Rain amount abs. (mm) | Error Code | Field N VED (log10(1/m3mm)) | Field v (m/s) | Raw data (1-32 number particles 1.class, 33-64 number particles 2.class, …)