IOP4H2O Campaign at AWIPEV Station in Ny-Ålesund

The IOP4H2O campaign took place at the AWIPEV station in Ny-Ålesund from 20. January – 10. March 2025. Researchers from the University of Cologne and the University of Leipzig from the (AC)³ E05 project intensively investigated humidity and temperature profiles for detailed sublimation processes using various instruments. In addition to the routine measurements at the AWIPEV station (https://www.awipev.eu/), the scientists installed a W-, Ka- and G-band cloud radar, as well as a laser precipitation monitor and snow-particle-counter. Furthermore, the measurements were accompanied by an additional 78 radiosonde ascents. The range of weather conditions was very wide with rain and +4°C, storms with winds up to 30 m/s, snow, cirrus as well as EarthCARE and HALO overflights. The evaluation of the data obtained is therefore very promising.

Green laser beam from AWIPEV station lidar together with the green laser light from the VISSS instrument (Photo: Andreas Walbröl).

Snow storm at AWIPEV station (photo: Andreas Foth).

Launching radiosondes from AWIPEV station (photo: Andreas Foth).