Dynamic Aspects of Katabatic Wind Evolution in the Antarctic Coastal Zone

The spatial evolution of katabatic winds along idealized slopes representative of Antarctic terrain is examined using a hydrostatic, two-dimensional primitive equation model with high resolution. A downslope momentum-forces analysis is made of simulations in which katabatic flow reaches steady state...

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Bibliographic Details
Published in:Boundary-Layer Meteorology
Main Authors: Gallee, H., Schayes, Guy
Other Authors: UCL
Format: Article in Journal/Newspaper
Language:English
Published: Kluwer Academic Publ 1992
Subjects:
Online Access:http://hdl.handle.net/2078.1/50428
https://doi.org/10.1007/BF00120691
Description
Summary:The spatial evolution of katabatic winds along idealized slopes representative of Antarctic terrain is examined using a hydrostatic, two-dimensional primitive equation model with high resolution. A downslope momentum-forces analysis is made of simulations in which katabatic flow reaches steady state, with emphasis on physical mechanisms in the coastal zone. The importance of the reversal of the pressure gradient force in the coastal zone, causing the sudden decay of katabatic winds, is discussed.