***** Dataset abstract ***** A Vaisala MAWS240 meteorological station was installed on the R/V Akademik Tryoshnikov during a circumnavigation of Antarctica in the austral summer season of 2016/2017. This dataset contains the raw text files of meteorology data collected in the Southern Ocean as part of the Antarctic Circumnavigation Expedition (ACE). Data files have undergone no processing or quality-checking and are as-recorded, directly from the instrumentation. Wind speed and direction parameters were recorded with a resolution of three seconds. Air temperature, relative humidity, dew point, solar radiation, ultraviolet radiation, cloud level and sky cover were recorded with a resolution of 30 seconds. Time of the measurement should be used with the TIMEDIFF to convert it to UTC. Latitude and longitude recorded are not corrected. Underway seawater measurements were recorded as null values. ***** Dataset contents ***** - MAWS__SMSAWS__YYYYMMDD.txt, data file, ASCII tab-separated - data_file_header, metadata, text format - README.txt, metadata, text format Data files contain data for one day and are named by that date. Null values are recorded as ///, // or / ***** Dataset license ***** This raw meteorological dataset is made available under the Creative Commons Attribution 4.0 International License (CC BY 4.0) whose full text can be found at https://creativecommons.org/licenses/by/4.0/

The Antarctic Circumnavigation Expedition was made possible by funding from the Swiss Polar Institute and Ferring Pharmaceuticals.