## 2 Methodology and Site Description
### Site Description  
The location of the study area with definition of the tidal gauge and meteorological stations are shown in Figure 3. The meteorological station Split with geographical coordinates \(\varphi=43^{\circ}31^{\prime}\) N, \(\lambda=16^{\circ}26^{\prime}\) E is located northwest of the city Split, on the Marjan hill, at the altitude of 122 m a.s.l. The terrain is a slope towards the sea on the SW-W-NW-N side. To the north is the bay of Kastela and to the east is the city of Split. At a distance of 7 km toward the north is the mountain Kozjak with the highest peak at 779 m a.s.l. The measuring system Fuess [34] is installed at a 5 m high terrace column on the building roof (12 m above ground). The only obstacles found near the meteorological station building are found to the west and northwest side (trees and terrain elevation overgrown with trees more than 10 m tall). The roughness class of the terrain is 2.5 (z\({}_{0}\) = 0.2) [34]. The wind speed and direction data obtained by the classic Feuss measurement consist of an average hourly wind speed with corresponding wind.  
The nearest tidal gauge near Kastela Bay is located within the Institute of Oceanography and Fisheries (IOR) in Split, at the western border of peninsula Marjan. The time series of measured sea surface elevations over a total duration of five years have been obtained from the Marjan tide gauge for the period from 1 January 2010 to 31 December 2014. The sampling frequency of the tide gauge was set to 1 h for the entire time series. The measured water level elevation is referred to as the HVRS71 vertical datum [33]. Due to the maintenance and malfunction of the tide gauge IOR Marjan, the observed time series are characterized by periods without recorded values of the sea level. For the purpose of this work, a continuous time series is required so the longest continuous time series has been found from 25 January 2010 at 12:00 h to 27 June 2011 at 23:00 h with a total of 12,444 h of data.  
Barometric pressure data are obtained from two meteorological stations: Split-Airport and Split-Marjan. The meteorological station Split-Airport is located at 21 m a.s.l. and the barometric pressure values are recorded three times a day at 7 am, 2 pm and 9 pm. The meteorological station Split-Marjan is located at 122 m a.s.l. and has an hourly measurement frequency including barometric pressure values. Logs of barometric pressure were obtained from both meteorological stations for the period from 1 January 2010 to 31 December 2014. Due to the location of Kastela Bay, the meteorological station Split-Airport was considered as relevant, but due to its low measurement frequency (3 times per day), the data from Split-Marjan was used for further analysis. First, the data from Split-Marjan was compared with the data from Split-Airport and a mean difference of 12.67 hPa with a standard deviation of 0.67 hPa was found. All data from Split-Marjan were corrected for the values of 12.67 hPa. The available data from the Split-Marjan station has a continuous record with no missing data for the entire 5-year period. However, since the sea level signal does not have the same continuity as the barometric pressure, the same period of barometric pressure as sea level is included in the further analysis.  
Insight into bathymetric features emphasize depth values up to 37 m with a pretty uniform decrease towards the shoreline (Figure 4). A bathymetric survey for the purpose of this paper has been performed in April 2021 with a single beam setup. Shoreline