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Sea-breeze scaling from numerical model simulations, Part I: Pure sea breezes

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Porson, Aurore Steyn, Douw G. Schayes, Guy [UCL]

Numerical model simulations of sea-breeze circulations under idealized conditions are subjected to dimensional analyses in order to resolve sea-breeze dynamical relations and unify previous results based on observations. The analysis is motivated by the fact that sea-breeze depth scaling and volume flux scaling are only partially understood. The analysis is based on nonlinear numerical modelling simulations in combination with recent observational scaling analyses. The analysis confirms scaling laws for sea-breeze strength dependence on governing variables and shows how the sea-breeze speed scale is controlled by surface heat flux. It also shows that the sea-breeze depth scale is controlled by stability. By combining sea-breeze speed and depth scales, the sea-breeze volume flux scale is determined by an equilibrium between the accumulated convergence of heat over land since sunrise and stable air advection from the sea surface.

Document type Article de périodique (Journal article) – Article de recherche
Access type Accès restreint
Publication date 2007
Language Anglais
Journal information "Boundary-Layer Meteorology : an international journal of physical and biological processes in the atmospheric boundary layer" - Vol. 122, no. 1, p. 17-29 (2007)
Peer reviewed yes
Publisher Springer (Dordrecht)
issn 0006-8314
e-issn 1573-1472
Publication status Publié
Affiliation UCL
Keywords numerical model ; scaling law ; sea breeze ; surface heat flux ; stability ; volume flux scaling
Links
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Bibliographic reference Porson, Aurore ; Steyn, Douw G. ; Schayes, Guy. Sea-breeze scaling from numerical model simulations, Part I: Pure sea breezes. In: Boundary-Layer Meteorology : an international journal of physical and biological processes in the atmospheric boundary layer, Vol. 122, no. 1, p. 17-29 (2007)
Permanent URL http://hdl.handle.net/2078.1/37834