DATA SHEET
WHAT?
PRODUCT-GENERAL-ID BS_ANALYSIS_FORECAST
PRODUCT_SPECIFIC-ID BSMFC-MARCLIM-TV-FOR
PRODUCT TYPE Ocean forecast and analysis
OUTPUT TYPE level 4 product (gridded)
Short product description (4 lines maximum)
Basin-scale analysis and forecast of the Black Sea circulation and stratification
Long product description (OVERVIEW)
General information: The basin-scale model is used for continuous analysis and forecast of the Black Sea circulation
and stratification. The model output includes dynamical sea level, three-dimensional fields of current velocity,
temperature, and salinity. The fields are provided on 35 levels for every 24 hours, starting from yesterday midnight
and during the next three days. The basin-scale model represents the MHI primitive equation circulation model with
about 5 km of horizontal resolution and 238 x 132 grid points. The predicted region is bounded by 27.4221 E and
41.8955 E, 40.8633 N and 46.6855 N. For the model equations wind, heat fluxes, precipitations and evaporation are
made on the sea surface. Linear kinematic condition is use for vertical velocity. On the bottom no slip condition for
the velocity and no fluxes for temperature and salinity are used. On the solid boundaries we made slip condition for
velocity and no fluxes for temperature and salinity and Dirlichlet condition is used on open boundaries (rivers and
straits). Processing information: The basin-scale model carries out forecasts by means of consecutive cycles shifted
forward in time by 1 day. Every cycle is divided into two intervals. During the first interval corresponding to 24
hours of the yesterday the adjustment (spin up) takes place and assimilation is carried out. The NOAA SST and
altimetry data are assimilated by the basin-scale model during the adjustment-assimilation interval. The second
interval includes the period from 0 hour of UTC of the present day till 24 hours of UTC of the third day (the
forecasting cycle). Model functioning in the prognostic mode during this period of time. Description of observation
methods/instruments: The basin-scale model assimilates satellite altimetry data provided by AVISO Center, France,
and sea surface temperature obtained through processing of AVHRR data received directly in MHI. The data of atmosphere
forcing come from ALADIN regional forecasting National Meteorological Administration, Romania. Accuracy / Calibration
information: Quality and accuracy was estimated during the off-line 2003-2007 drifters experiments and ECOOP validation
experiment in 2008. The accuracy level of the predicted fields is consistent with the state of the art of the modeling
of the World ocean circulation. Further improvement of the model assumes accurate tuning of parameterization of the
mixing process in the upper layer of the sea. 1) Suitability: for ship routing; fisheries; climate prediction;
pollution management; specification of the boundary conditions for the nested high-resolution model along the open
boundaries of the sub-regions. 2) Expected type of users/uses: Hydrometeorological Services, Search and Rescue Services,
Fishery companies, Ship Navigation, Oil/Gas Extracting companies.
References:
1. G.Korotaev, A.Kubryakov, E.Cordoneanu, V.Dorofeev, V.Fomin, A.Grigoriev, A.Kordzadze, T.Oguz, Yu.Ratner, D.Trukhchev,
H.Slabakov Near-operational Black Sea nowcasting/forecasting system. / European Operational Oceanography: Present and Future.
2006, European Communities, 269-275
2. Demyshev S.G., Korotaev G.K. Numerical modeling of synoptic variability of the Black Sea with consideration for seasonal
boundary conditions (translation). Izvestiya, Atmospheric and Oceanic Physics, vol.32, No1,1996.C. 108 - 116
PARAMETERS (usual parameter name, CF parameter, unit, convention)
- temperature (sea_water_temperature,°C,CF)
- sea water velocity (eastward_sea_water_velocity, ms-1,CF, northward_sea_water_velocity,ms-1,CF)
WHERE?
GEOGRAPHICAL COVERAGE BS (latmin 40.863 latmax 46.685 lonmin 27.422 lonmax 41.895)
GLOBAL OR REGIONAL BASIN: BS
SPATIAL RESOLUTION: 11/180 deg lon x 8/180 deg lat
GRID TYPE or GEOGRAPHICAL PROJECTION: regular latitude longitude grid
VERTICAL COVERAGE: 35 levels from 0 to 2100 meters.
2.5/5/10/15/20/25/30/40/50/62.5/75/87.5/100/112.5/125/150/175/200/250/300/
400/500/600/700/800/900/1000/1100/1200/1500/1700/1800/1900/2000/2100/
WHEN?
TEMPORAL COVERAGE since 2006-04-01 – ONGOING
It is a time series of 3 year length
TEMPORAL RESOLUTION daily fields on 00 UTC
Temporal window of each update - 5 days
Forecast length - 3 days
Analysis length - 2 days
Update frequency - daily
Time series Length of forecast - 3 days
Time series Length of best estimate analysis - 1 year
Operational or historical time series? Operational
BY (supply center)
name : MHI Remote Sensing Departament
web site : http://dvs.net.ru/
FILES FORMAT : netcdf convention CF/COARDS 1.4.
UPDATE FREQUENCY of the delivery mechanism : Every day, 17h of local time
FREE access : YES
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