Sea Temperature Reanalysis Data for the Black, Azov, and Marmara Seas, 2018

This dataset contains the four‑dimensional sea temperature reanalysis for the Black, Azov, and Marmara Seas for the year 2018. It was produced using the INMOM‑based hydrothermodynamics model with variational assimilation of satellite sea surface temperature (SST) observations. The assimilation integrates measurements from multiple satellite platforms (Aqua, Terra, Suomi NPP, Sentinel‑3) carrying instruments such as MODIS, SLSTR, and OLCI. The data are provided as a regular grid in longitude, latitude, sigma‑depth, and time. The grid dimensions are: Longitude: 306 points (step 0.05°) Latitude: 200 points (step 0.036°) Depth: 20 sigma‑levels (transformed vertical coordinate following bottom topography) Time: 2922 time slices (3‑hour intervals covering the full year 2018) Missing values correspond to land points; the land mask is constant across all depth levels and time steps.Binary file TT-SIGMA.dat containing 32‑bit little‑endian floats. Data are ordered by time (outermost), then depth, then latitude in reverse order, then longitude (innermost). Missing values correspond to land.