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Influence of meteorological conditions in autumn/winter 2021–2022 on the development of storm surges and the dune erosion on the Polish Baltic coast as a result of climate changes

Łabuz Tomasz Arkadiusz

Studia Quaternaria

2023

Vol. 40, Nr 2

93--114

This paper presents details of 37 storm surges that occurred on the Polish southern Baltic Sea coast in the autumn/winter 2021–2022 season. They emerged during the passage of a larger number of low-pressure systems than usual from the SW-W direction over the Baltic Sea. Based on an assessment of meteorological and hydrological conditions during the storms, the relationship between the wind parameters, the sea level increase, and its maximum elevation was ascertained. The relationship between the sea level and the run-up elevation was ascertained. The elevation of the sea level and run-up on the onshore were compared with the beach height. Sections with a lower beach were affected by dune erosion already at a lower sea level. The dependence of dune erosion on the sea level elevation was presented. The value of the dune base retreat depended on the beach elevation and the sea level expressed by the onshore flow called run-up. The most significant erosion occurred during the storm Nadine with a sea level of 1.0–1.28 m AMSL. The average erosion varied between 1.0 and 4.5 m. The maximum erosion values reached 8–13 m.

Water level fluctuations in the Odra River mouth area in relation to passages of deep low-pressure systems

Wiśniewski B., Kowalewska-Kalkowska H.

Oceanological and Hydrobiological Studies

2007

Vol. 36, No.1

69-82

The Odra River mouth area is affected by storm surges caused by passages of deep lowpressure systems over the Baltic Sea. The surges are the result of wind action and changes in atmospheric pressure at the sea surface. The two effects may be additive, in which both factors increase or decrease the sea level on the coast, or they may be non-additive, where one factor increases the sea level and the other decreases it. This paper discusses the role of the wind field and changes in atmospheric pressure in the duration and extent of storm surges in the Odra River mouth area.