This dataset contains mesospheric ozone (O3) data acquired by the ground-based British Antarctic Survey''s Microwave Radiometer at Troll (BAS-MRT) in Antarctica (72 deg S, 2.5 deg E, 1270 amsl). The BAS radiometer has been designed in order to study the effects of energetic particle precipitation on the middle and upper atmosphere, using nitric oxide and ozone measurements, and the dynamical context using CO. This data set contains the O3 measurements.

The data set covers the period from February 2008 to January 2010. O3 is measured for approximately 20 hours each day and profiles are retrieved every hour. The retrieved profiles cover the pressure range from 3 to 0.02 hPa (approximately 38 to 72 km), with an altitude resolution that varies from 10 km at 3 hPa (39 km) to 18 km at 0.7 hPa (66~km).