# An Analysis of the Wind Parameters in the Western Side of the Black Sea
## 2 Materials and Methods
### Wind Dataset  
In the present work, we will analyze the wind dataset covering a time period from 2015 to 2020 as provided by the National Institute of Marine Geology and Geocology--GeoCofar. Romania is represented in the European Multidisciplinary Seafloor and Water Column Observatory-European Research Infrastructure Consortium (EMSO ERIC) through GeoEco-Mar. The National Institute provides EMSO ERIC real-time data on the physico-chemical and biological parameters of the water column, at different depths, data on early warning in case of marine hazards, as well as the experience of the personnel involved in the proper functioning of the entire system. The data are provided from the EUXINUS network of  
Figure 1: The bathymetric chart of the Black Sea. marine and coastal observatories (3 offshore and one coastal observatory), part of the Black Sea Security System. EMSO-EUXINUS is a regional security system destined for the Western Black Sea with real-time alerting to marine geo-hazards (e.g., submarine landslides, active fault movements, submarine earthquakes, tsunami waves, etc.). It monitors the characteristics and dynamics of coastal water bodies, including several meteorological parameters. The amount of data is stored within the National Center for Monitoring and Alarming to Marine Natural Hazards, which operates within the Constanta branch of INCD (National Center for Research and Development) GeoEcoMar [27]. The monitoring and early warning system consisting of 3 autonomous marine monitoring stations (Figure 2) is composed of:  
1. Surface buoy: * solar recharging system for accumulator batteries; * power supply management system of the station; * switchable satellite/radio communication system; * data acquirer with integrated management; * remote control system and two-way real-time radio/satellite communication; * weather sensor system; * active and passive radar system; * optical signaling system; * acoustic system for managing the communication and data transmission with the installed underwater equipment [27]. 2. Multiparameter buoy fixed at 5 m depth: * Doppler sensor for current; * conductivity sensor; * temperature sensor; * pressure sensor; * oxygen sensor; * turbidity sensor; * chlorophyll sensor [27]. 3. Multi-parameter buoy fixed to the seabed with bidirectional acoustic communication modem with surface buoy (approximately 2 years autonomy and remote triggering system): * Doppler sensor for current; * conductivity sensor; * temperature sensor; * pressure sensor; * battery system for powering the sensors with a duration of approx. 1 year. 4. Tsunameter assembled on the seabed, near the buoy: * anchoring system; * Tsunameter--positioned on the seabed with two-way acoustic communication modem with the surface buoy, with approximately 2 years autonomy and remote trigger system; * battery system for powering the sensors with approximately 2 years autonomy [27]. The three complex buoys (EuxRO 1, EuxRO 2, and EuxRO 3) are located on the Romanian continental shelf, in the territorial waters of Romania, at a distance of approximately 160 km from the coast and were approved by the Ministry of National Defense, through the Romanian Naval Forces, represented by the Maritime Hydrographic Directorate (DHM). Their location can be seen in Figure 3 and also in Table 1.  
The transmission of the data collected from the installed sensor systems is acoustically done, in real time. The data are transmitted to the surface buoys, then satellite, to the National Monitoring and Alarm Center for Marine Natural Hazards EUXINUS, in Constanta. The weather station used for measuring the wind parameters is AIRMAR WHEATHER STATION 200 WX, being installed at an approximate height of 2.5 m above the water. The system is capable of recording the following data: air pressure, air temperature, water current amplitude, water current direction, water temperate, wind speed and wind direction, making 24 observations per day, one value of each parameter per hour.