Observational Study of the Atmospheric Boundary Layer over Antarctica
Open Access
- 1 May 1986
- journal article
- Published by American Meteorological Society in Journal of Climate and Applied Meteorology
- Vol. 25 (5) , 641-651
- https://doi.org/10.1175/1520-0450(1986)025<0641:osotab>2.0.co;2
Abstract
During the austral summer of 1982/83, measurements of wind and temperature profiles were made through the atmospheric boundary layer in Adelie Land, East Antarctica, an area known for strong katabatic winds. It was found that a shallow but strong temperature inversion was developed at night, and destroyed during the day, resulting in the development of a well-mixed layer. Wind hodographs were quite regular and spiral-like at night, but irregular during the day. The mean wind direction was about 40° to the left, looking downslope, but more downslope at night and more cross-slope during the day. The conclusion was derived that during the polar summer the flow over Antarctica is controlled by the gravitational factor (slope-induced baroclinicity), by the thermal stability (turbulent mixing), and also by the synoptic forcing.Keywords
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