A SEA BREEZE NUMERICAL SIMULATION AND CIRCULATION ANALYSIS IN ORAN, ALGERIA, URBAN ATMOSPHERE

Abstract

In this paper the sea breeze dynamics in Oran agglomeration atmosphere, in the northAlgeria, is investigated and analyzed by a numerical simulation of Oran agglomerationatmosphere, using SUBMESO model during diurnal cycle of June 24, 2010, in order topredict the spatio-temporal starting of sea breeze, its intensity and relative directionthrough atmospheric flow variations analysis, and to evaluate the role of thermalcirculations on sea breeze direction, intensity and ventilation and its effect on pollutanttransport. The study of this area has not been investigated or analyzed in anyframework, the numerical simulation was preceded by a topographic and surface dataprocessing in order to generate the grid simulation, with a specific characteristics usedby the SUBEMESO and SM2-U (Soil Model for Sub-Meso scales Urbanized) models.This simulation allowed us to know all sea breeze characteristics during the studyperiod.