The present dataset reports the properties of cirrus clouds over the research site of Ny-Alesund, Svalbard, as retrieved from lidar measurements from 2011 to 2020. Several essential geometrical (cloud thickness (GT), cloud base and top heights) and optical properties (Cloud Optical Depth (COD), lidar ratio (LR), linear particle depolarization ratio (LPDR) and color ratio (CR)) were derived. Additionally, meteorological parameters (temperature, wind speed and wind direction) were extracted from AWIPEV radiosonde ascents. The meteorological parameters were subsetted within the altitude of cirrus clouds and only measurements up to 2 hours apart from the cirrus observations were used. In this way, the meteorological parameters can be considered representative of the prevailing meteorological conditions in the presence of cirrus clouds. The original radiosonde datasets are already available at doi:10.1594/PANGAEA.914973.

DateTime/Start: 2011-08-11 and DateTime/End: 2020-05-17