Complete 100- and 200-mb GHOST Balloon Data: 1966-1970

At the cutoff date of the previous study 1, one balloon, 70 K, was still aloft. The unpublished portion of the life history of balloon 70 K is thus included in this study.

With the exception of the 200-mb balloons 61 TR and 62 TN, which were launched from McMurdo, Antarctica, all balloons included in the present study were launched from Christchurch, New Zealand. In the case of 100 N and 209 Q, large gaps appear in the data because both balloons disappeared into the polar night for an entire winter season.