The British Antarctic Survey (BAS) operated a Vaisala RS92 radiosonde unit at King Edward Point, South Georgia Islands to support meteor radar data also recorded at the site during the South Georgia Wave Experiment (SG-WEx) project. The sonde ascents took place during two campaigns: January 2015 and June/July 2015 to measure gravity waves. The data are standard radiosonde measurements of temperature, humidity, wind speeds, direction and pressure along the ascent at 10s intervals. These balloon ascents typically continue until the balloon fails in the stratosphere. The highest ascent recorded in these data was around 32km. Some ascents also provide data for parts of the descending part of the flight until the instrumentation failed.

The King Edward Point Magnetic Observatory (KEP, 54.2820 S, 36.4930 W) is located on the South Georgia island in the South Atlantic.