Some cases of westward moving disturbances in the Mawson-Davis area, Antarctica

Westward moving cloud band s have been observed in the area of Antarctica between the Australian stations of Mawson and Davis when there was cyclonic activity a long the coast to the east. An examination of several events of this character, which occurred during the summer of 1983/84 and in January 1972, has been carried out. It was found that the passage of the cloudbands was accompanied by a barograph trace minimum, with precipitation occurring on the rising barometer following a sharp fall. The vertical structure of one event, when rare inland upper wind data were available, is discussed. A strong middle to upper tropospheric baroclinic zone appeared to develop over the Lambert Glacier-Prince Charles Mountains area as warm air from a cyclone to the cast met colder air flowing off the east Antarctic Plateau.