Quality-checked meteorological data from the Southern Ocean collected during the Antarctic Circumnavigation Expedition from December 2016 to April 2017.

The wind speed measurements were made at a height of approximately 30.5 meters above sea level. The measurement height of the temperature and humidity probes is 23.7 meters above sea level. The barometric pressure was measured at 20 meters above sea level.

The observations have been screened for implausible values and on some occasions despiking based on visual inspection and a rolling interquartile range filter have been applied. Solar radiation measurements are affected by shadowing of the ship, and the air temperature and humidity by the heating of air that passes over the ship. Masks are provided to flag affected observations.

The wind speed readings are affected by airflow distortion and should be used with consideration until a dataset of corrected wind speeds is published. More details on airflow distortion can be requested from the contact person. __Dataset contents__

• ACE_filtered_meteorological_data_1min.csv, data file, comma-separated values
• diff_TA1_TA3_WDR2_5min_1.png, metadata, portable network graphics
• ratio_SR1_SR3_solangle_5min_1.png, metadata, portable network graphics
• data_file_header.txt, metadata, text
• README.txt, metadata, text
• ace_filtered_meteorological_data_change_log.txt, metadata, text