Five-minute average horizontal wind velocity data combined from both sensors (which has been corrected for air-flow distortion) from the Antarctic Circumnavigation Expedition (ACE) 2016/2017 legs 0 to 4. Data file: wind-observations-port-stbd-corrected-combined-5min-legs0-4.csv date_time: date and time of five minute averaging interval (center) in ISO 8601 format YYYY-MM-DDThh:mm:ss+00:00 [UTC] latitude: average latitude of the ship [degree_north] longitude: average longitude of the ship [degree_east] wind_from_direction_relative_to_platform: (WDR) average of the corrected wind direction observed relative to the platform reference system (clockwise from the bow of the ship) [degree] wind_speed_relative_to_platform: (WSR) average of the corrected wind speed observed relative to the platform reference system [m s-1] wind_from_direction: (WD) average true wind direction from (clockwise from North) calculated from the corrected relative wind vector [degree] wind_speed: (WS) average true wind speed calculated from the corrected relative wind vector [m s-1] bowward_relative_wind: average relative wind vector component in bow direction [m s-1] portward_relative_wind: average relative wind vector component in port direction [m s-1] eastward_wind: average true wind vector component in East direction [m s-1] northward_wind: average true wind vector component in North direction [m s-1] speed_of_10m_neutral_wind: (u10N) 10 meter neutral wind speed estimated from WS using the ERA-5 heat fluxes and the COARE 3.5 neutral drag coefficient [m s-1] eastward_component_of_10m_neutral_wind: average 10 meter neutral wind vector component in East direction [m s-1] northward_component_of_10m_neutral_wind: average 10 meter neutral wind vector component in North direction [m s-1] Missing or spurious observations are replaced by NaN. In some situations the true wind speed values could not be estimated due to missing velocity data from the ship's navigation system.