Hydrometeor particle size distribution data collected using a snow particle counter on board the R/V Akademik Tryoshnikov in the Southern Ocean during the austral summer of 2016/17 as part of the Antarctic Circumnavigation Expedition (ACE)

__Dataset abstract__ The data consist of the hydrometeor particle size distribution for particles with a size range (average diameter) from 36 to 490 μm (with the last bin including all detected particles larger than 490 μm) detecting the flux of snow, rain and other particles including sea spray passing through a photo-electric snow particle counter (SPC-95) installed on board the R/V Akademik Tryoshnikov as part of the Antarctic Circumnavigation Expedition (ACE).

Data were recorded from January to March 2017 in the Southern Ocean. Here we present the raw data set, generated by the SPC-95 Data Processing Device, which consists of the number of particles, classified into 64 size bins, passing through the snow particle counter with a time resolution of one second. Data are presented in daily files and have undergone some pre-processing.