Temperatures at 68°S
Radar measurements in the Antarctic at 62°S in the 1990s surprisingly did not detect PMSE which was tentatively explained by too high temperatures prohibiting the formation of ice particles. At that time there were basically no temperature measurements available in the summer mesopause region at Antarctic latitudes. This situation triggered a sounding rocket campaign in January/February 1998 when a total of 24 temperature profiles were measured by means of falling spheres. The campaign was performed in cooperation with the British Antarctic Survey (BAS) from the Antarctic station Rothera (68°S, 68°W). The `Mobile Raketenbasis' (MORABA) of the German Space Agency (DLR) was in charge of the rocket launchings and the tracking radar operation. These were the first insitu-measurements of temperatures in the Antarctic mesopause region.