netcdf UGRID/vistula.nc {
  dimensions:
    nMesh2_node = 3738;
    nMesh2_face = 4626;
    Three = 3;
    level = 15;
    time = UNLIMITED;   // (3 currently)
  variables:
    int Mesh2;
      :cf_role = "mesh_topology";
      :long_name = "topology data of 2D unstructured mesh";
      :topology_dimension = 2; // int
      :node_coordinates = "Mesh2_node_x Mesh2_node_y";
      :face_node_connectivity = "Mesh2_face_nodes";

    int Mesh2_face_nodes(nMesh2_face=4626, Three=3);
      :cf_role = "face_node_connectivity";
      :long_name = "Maps every triangular face to its three corner nodes";
      :start_index = 1; // int
      :units = "1";

    float Mesh2_node_x(nMesh2_node=3738);
      :standard_name = "longitude";
      :long_name = "Longitude of 2D mesh nodes";
      :units = "degrees_east";

    float Mesh2_node_y(nMesh2_node=3738);
      :standard_name = "latitude";
      :long_name = "Latitude of 2D mesh nodes";
      :units = "degrees_north";

    float level(level=15);
      :units = "m";
      :standard_name = "depth";
      :description = "bottom of vertical layers";
      :axis = "Z";
      :positive = "down";

    float total_depth(nMesh2_node=3738);
      :units = "m";
      :standard_name = "sea_floor_depth_below_sea_surface";
      :description = "total depth at nodes";

    double time(time=3);
      :units = "seconds since 1998-01-01 00:00:00 UTC";
      :standard_name = "time";
      :calendar = "standard";
      :axis = "T";

    float salinity(time=3, nMesh2_node=3738, level=15);
      :units = "1e-3";
      :standard_name = "sea_water_salinity";
      :valid_min = 0.0f; // float
      :valid_max = 200.0f; // float
      :_FillValue = -999.0f; // float

    float temperature(time=3, nMesh2_node=3738, level=15);
      :units = "degC";
      :standard_name = "sea_water_temperature";
      :valid_min = -10.0f; // float
      :valid_max = 100.0f; // float
      :_FillValue = -999.0f; // float

  // global attributes:
  :Conventions = "CF-1.6, UGRID-1.0";
  :title = "Vistula lagoon - hydrodynamics and T/S, baroclinic - 3D";
  :history = "created on 2024-08-01 18:08:30 MET";
  :institution = "ISMAR-CNR, Venice, Italy";
  :source = "Model data produced by SHYFEM at ISMAR-CNR";
  :references = "Model info: http://www.ismar.cnr.it/shyfem";
  :contact = "email: georg.umgiesser@ismar.cnr.it";
  :comment = "Data restriction: for academic research use only";
}