Updated System for the Sea Wave Operational Forecast of the Black Sea Marine Forecasting Center

Purpose. The work is aimed at updating the sea wave forecasting system developed in the Black Sea Marine Forecasting Center by including the block of wind wave forecast in the Sevastopol region and by improving the wave forecast accuracy using the proposed procedure for the SWAN model tuning. Methods and Results. In the updated forecasting system, the possibility of performing the joint operational sea wave forecasts for the Black Sea and the Sevastopol region (with the 5 and 1 km spatial resolutions, respectively) became possible due to the nested grid method applied. To improve accuracy of the wave forecasts, the procedure for the SWAN model tuning was proposed. It is based on changing the parameterization of the surface friction coefficient Cd(V), where V is the surface wind speed. This permits to reduce the deviations of the forecasted wave heights from those obtained from the satellite altimetry measurements. Efficiency of the proposed procedure was assessed through comparison of the forecasting results with the remote sensing data. It is shown that in the forecasts supplied with an optimal choice of functional dependence Cd(V), the scattering index between the forecasted and measured values can be reduced by 20 %. Conclusions. Represented is the updated system of the Black Sea Marine Forecasting Center intended for the joint operational sea wave forecasts in the Black Sea and in the Sevastopol region. The results of model validation have shown that the procedure proposed for tuning the SWAN model makes it possible to reduce the deviations of the forecasted wave heights from those measured by the sensors installed at the altimetry satellites.

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Operative forecast of hydrophysical fields in the Georgian Black Sea coastal zone within the ECOOP

Ocean Science Discussions ◽

10.5194/osd-8-397-2011 ◽

2011 ◽

Vol 8 (1) ◽

pp. 397-433 ◽

Cited By ~ 1

Author(s):

A. A. Kordzadze ◽

D. I. Demetrashvili

Keyword(s):

High Resolution ◽

Black Sea ◽

Surface Wind ◽

Scale Model ◽

The Black Sea ◽

Time Step ◽

Regional Area ◽

Study Results ◽

Basin Scale ◽

Forecasting System

Abstract. One of the part of the Black Sea Nowcasting/Forecasting System is the regional forecasting system for the Easternmost part of the Black Sea (including the Georgian water area), which have been developed within the context of the EU International projects ARENA and ECOOP. A core of the regional system is a high-resolution baroclinic regional model of the Black Sea dynamics developed at M. Nodia Institute of Geophysics (RM-IG). This model is nested in the basin-scale model (BSM) of Marine Hydrophysical Institute (MHI, Sevastopol/Ukraine). The regional area is limited to the Caucasian and Turkish coastal lines and the western liquid boundary coinciding with a meridian 39.36° E. Since June 2010 we regularly compute 3 days' forecasts of current, temperature and salinity for the Easternmost part of the Black Sea with 1 km spacing. In this study results of two forecasts are presented. The first forecast corresponds to Summer season and covers the prognostic interval from 00:00 h, 6 August to 00:00 h, 9 August 2010. The second one corresponds to Autumn season and covers the prognostic interval from 00:00 h, 26 October to 00:00 h, 29 October 2010. Data needed for the forecasts – the 3-D initial and prognostic hydrophysical fields, also 2-D prognostic meteorological fields at the sea surface, wind stress, heat fluxes, evaporation and precipitation rates for the our regional area are placing on the MHI server every day and we are available to use these data operatively. Prognostic hydrophysical fields are results of forecast by BSM of MHI and 2-D meteorological boundary fields represent results of forecast by regional atmospheric model ALADIN. All these fields are given on the grid of BSM with 5 km spacing and with one-hour time step frequency for the integration period. The analysis of predicted fields shows that to use the model with high resolution is very important factor for identification of nearshore eddies of small sizes. It should be noted very different character of regional circulation in summer and autumn seasons in the Easternmost part of the Black Sea.

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Comparing wave heights simulated in the Black Sea by the SWAN model with satellite data and direct wave measurements

Russian Journal of Earth Sciences ◽

10.2205/2016es000579 ◽

2016 ◽

Vol 16 (5) ◽

pp. 1-12 ◽

Cited By ~ 4

Author(s):

Stanislav Myslenkov ◽

Anna Chernyshova

Keyword(s):

Black Sea ◽

Satellite Data ◽

The Black Sea ◽

Direct Wave ◽

Swan Model ◽

Wave Measurements ◽

Wave Heights

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Operational forecast of hydrophysical fields in the Georgian Black Sea coastal zone within the ECOOP

Ocean Science ◽

10.5194/os-7-793-2011 ◽

2011 ◽

Vol 7 (6) ◽

pp. 793-803 ◽

Cited By ~ 12

Author(s):

A. A. Kordzadze ◽

D. I. Demetrashvili

Keyword(s):

High Resolution ◽

Black Sea ◽

Surface Wind ◽

Scale Model ◽

Open Boundary ◽

The Black Sea ◽

Time Step ◽

Regional Area ◽

Basin Scale ◽

Forecasting System

Abstract. One of the parts of the Black Sea Nowcasting/Forecasting System is the regional forecasting system for the easternmost part of the Black Sea (including the Georgian water area), which has been developed within the context of the EU International projects ARENA and ECOOP. A core of the regional system is a high-resolution baroclinic regional model of the Black Sea dynamics developed at M. Nodia Institute of Geophysics (RM-IG). This model is nested in the basin-scale model of Marine Hydrophysical Institute (MHI, Sevastopol/Ukraine). The regional area is limited to the Caucasian and Turkish coastal lines and the western liquid boundary coinciding with the meridian 39.36° E. Since June 2010 we have regularly been computing 3 days' forecasts of current, temperature and salinity for the easternmost part of the Black Sea with 1 km spacing. In this study the results of two forecasts are presented. The first forecast corresponds to summer season and covers the prognostic interval from 00:00 h, 6 August to 00:00 h, 9 August 2010. The second one corresponds to autumn season and covers the prognostic interval from 00:00 h, 26 October to 00:00 h, 29 October 2010. Data needed for the forecasts – the initial and prognostic hydrophysical fields on the open boundary, also 2-D prognostic meteorological fields at the sea surface – wind stress, heat fluxes, evaporation and precipitation rates for our regional area are being placed on the MHI server every day and we are available to use these data operatively. Prognostic hydrophysical fields are results of forecast by the basin-scale model of MHI and 2-D meteorological boundary fields represent the results of forecast by regional atmospheric model ALADIN. All these fields are given on the grid of basin-scale model with 5 km spacing and with one-hour time step frequency for the integration period. The analysis of predicted fields shows that to use the model with high resolution is very important factor for identification of nearshore eddies of small sizes. It should be noted the very different character of regional circulation in summer and autumn seasons in the easternmost part of the Black Sea.

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Analysis of potential changes in the Black Sea wave power for the 21st century

Renewable Energy ◽

10.1016/j.renene.2021.01.042 ◽

2021 ◽

Vol 169 ◽

pp. 512-526

Author(s):

Burak Aydoğan ◽

Tahsin Görmüş ◽

Berna Ayat ◽

Tunay Çarpar

Keyword(s):

Black Sea ◽

21St Century ◽

The Black Sea ◽

Wave Power ◽

Sea Wave

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Reliability of SWAN model simulations for the Black Sea Romanian coast

Maritime Transportation and Exploitation of Ocean and Coastal Resources ◽

10.1201/9781439833728.ch140 ◽

2006 ◽

pp. 1159-1165

Author(s):

C Trusca

Keyword(s):

Black Sea ◽

The Black Sea ◽

Model Simulations ◽

Swan Model

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Evaluation of the new high resolution unstructured grid Marmara Sea model

10.5194/egusphere-egu21-7194 ◽

2021 ◽

Author(s):

Mehmet Ilicak ◽

Ivan Federico ◽

Ivano Barletta ◽

Nadia Pinardi ◽

Stefania Angela Ciliberti ◽

...

Keyword(s):

High Resolution ◽

Boundary Conditions ◽

Black Sea ◽

Mixed Layer ◽

Unstructured Grid ◽

The Black Sea ◽

Marmara Sea ◽

Lateral Boundary ◽

Lateral Boundary Conditions ◽

Forecasting System

<p>Marmara Sea including Bosphorus and Dardanelles Straits (i.e. Turkish Strait Systems, TSS) is the connection between the Black Sea and the Mediterranean. The exchange flow that occurs in the Straits is crucial to set the deep water properties in the Black Sea and the surface water conditions in the Northern Aegean Sea. We have developed a new high-resolution unstructured grid model (U-TSS) for the Marmara Sea including the Bosporus and Dardanelles Straits using the System of HydrodYnamic Finite Element Modules (SHYFEM). Using an unstructured grid in the horizontal better resolves geometry of the Turkish Straits. The new model has a resolution between 500 meter in the deep to 50 meter in the shallow areas, and 93 geopotential coordinate levels in the vertical. We conducted a 4 year hindcast simulation between 2016 and 2019 using lateral boundary conditions from CMEMS (https://marine.copernicus.eu/) analysis, in particular Black Sea Forecasting System (BS-FS) for the northern boundary and Mediterranean Sea Forecasting System (MS-FS) for the southern boundary. Atmospheric boundary conditions fare from the ECMWF dataset.</p><p>Mean averaged surface circulation shows that there is a cyclonic gyre in the middle of the basin due to Bosphorus jet flowing to the south and turning to west after reaching the southern Marmara coast. The U-TSS model has been validated against the seasonal in situ observations obtained from four different cruises between 2017 and 2018. The maximum bias occurs at around halocline depth between 20 to 30 meters. &#160;We also found that root mean square error field is higher in the mixed layer interface. We conclude that capturing shallow mixed layer depth is very in the Marmara Sea due to the interplay of air-sea fluxes and mixing parametrizations uncertainties. Maximum salinity bias and rms in the new U-TSS model are around 3 psu which is a significant improvement with respect to previous studies. This new model will be used as an operational forecasting system and will provide lateral boundary conditions for the BS-FS and MS-FS models in the future.</p>

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Black Sea coastal forecasting system

Ocean Science ◽

10.5194/os-8-183-2012 ◽

2012 ◽

Vol 8 (2) ◽

pp. 183-196 ◽

Cited By ~ 9

Author(s):

A. I. Kubryakov ◽

G. K. Korotaev ◽

V. L. Dorofeev ◽

Y. B. Ratner ◽

A. Palazov ◽

...

Keyword(s):

Coastal Zone ◽

Black Sea ◽

Ecosystem Model ◽

The Black Sea ◽

Western Basin ◽

The North ◽

North Eastern ◽

The Crimea ◽

Forecasting System ◽

System Project

Abstract. The Black Sea coastal nowcasting and forecasting system was built within the framework of EU FP6 ECOOP (European COastalshelf sea OPerational observing and forecasting system) project for five regions: the south-western basin along the coasts of Bulgaria and Turkey, the north-western shelf along the Romanian and Ukrainian coasts, coastal zone around of the Crimea peninsula, the north-eastern Russian coastal zone and the coastal zone of Georgia. The system operates in the real-time mode during the ECOOP project and afterwards. The forecasts include temperature, salinity and current velocity fields. Ecosystem model operates in the off-line mode near the Crimea coast.

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