Author(s): P. Pinotes; M. A. V. C. Araujo; A Trigo-Teixeira; I. F. Trigo
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Keywords: Weather types; Storm surge; Sea level; Geostrophic flow; Atmospheric circulation
Abstract: Tide levels can vary with weather systems, such as mid-latitude cyclones. Consequently, storm surges can occur and threat the coast. In this work, the geostrophic flow is characterized and the frequency of the most relevant circulation weather types (WTs) associated with surges is investigated together with their synoptic features. The influence of each WT on the sea level records from three tide gauges at the Portuguese coast is evaluated for the period 1976-2011. Predominant surges are found for cyclonic, westerly and southwesterly WTs.
Year: 2014