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Some aspects of the variation with time of katabatic flow over a simple slope
Author(s) -
Helmis C. G.,
Papadopoulos K. H.
Publication year - 1996
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49712253103
Subject(s) - katabatic wind , flow (mathematics) , simple (philosophy) , variation (astronomy) , geology , atmospheric sciences , mechanics , mathematics , meteorology , environmental science , geometry , physics , astrophysics , philosophy , epistemology
Features of the variations in katabatic flow along a simple slope in Athens, Greece are examined both observationally and from a simplified theoretical basis. When undisturbed periods of established flows are selected it is observed that the velocity and temperature fluctuations reveal characteristics which are in agreement with the theory proposed by Fleagle. Interesting implications of the theory are discussed, such as the effects of prescribing a decreasing cooling rate throughout the night or of taking into account the vertical structure of the katabatic layer.