An analytic solution for time‐periodic thermally driven slope flows

The article examines the flow generated by time‐periodic variations in surface temperature along an infinite slope in an initially unperturbed, stably stratified atmosphere at rest. Uniform boundary conditions at the surface are conducive to an along‐slope parallel flow, governed by a periodically r...

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Bibliographic Details
Published inQuarterly journal of the Royal Meteorological Society Vol. 141; no. 690; pp. 1968 - 1974
Main Authors Zardi, D., Serafin, S.
Format Journal Article
LanguageEnglish
Published Chichester, UK John Wiley & Sons, Ltd 01.07.2015
Wiley Subscription Services, Inc
Subjects
Prandtl model
slope flows
thermally driven wind
topographic effects
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Summary:The article examines the flow generated by time‐periodic variations in surface temperature along an infinite slope in an initially unperturbed, stably stratified atmosphere at rest. Uniform boundary conditions at the surface are conducive to an along‐slope parallel flow, governed by a periodically reversing local imbalance between along‐slope advection and slope‐normal fluxes of momentum and heat. It is shown that solutions include both a transient part and a periodic regime and that three different flow regimes may occur. The properties of the solutions in each regime are examined and discussed, outlining novelties with respect to previously known results.
Bibliography:ObjectType-Article-1
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ISSN:0035-9009
1477-870X
DOI:10.1002/qj.2485