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Sea-breeze modification of the growth of a marine internal boundary layer

Plant, R. S. and Atkinson, B. W. (2002) Sea-breeze modification of the growth of a marine internal boundary layer. Boundary-Layer Meteorology, 104 (2). pp. 201-228. ISSN 1573-1472

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To link to this article DOI: 10.1023/A:1016045229957

Abstract/Summary

A numerical mesoscale model is used to make a high-resolution simulation of the marine boundary layer in the Persian Gulf, during conditions of offshore flow from Saudi Arabia. A marine internal boundary layer (MIBL) and a sea-breeze circulation (SBC) are found to co-exist. The sea breeze develops in the mid-afternoon, at which time its front is displaced several tens of kilometres offshore. Between the coast and the sea-breeze system, the MIBL that occurs is consistent with a picture described in the existing literature. However, the MIBL is perturbed by the SBC, the boundary layer deepening significantly seaward of the sea-breeze front. Our analysis suggests that this strong, localized deepening is not a direct consequence of frontal uplift, but rather that the immediate cause is the retardation of the prevailing, low-level offshore wind by the SBC. The simulated boundary-layer development can be accounted for by using a simple 1D Lagrangian model of growth driven by the surface heat flux. This model is obtained as a straightforward modification of an established MIBL analytic growth model.

Item Type:Article
Refereed:Yes
Divisions:Faculty of Science > School of Mathematical and Physical Sciences > Department of Meteorology
No Reading authors. Back catalogue items
ID Code:16583
Uncontrolled Keywords:Boundary-layer growth - Marine internal boundary layer - Mesoscale model - Sea-breeze circulation - Surface
Publisher:Springer

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