{
    "Identifier": "097574db-2e61-42d0-86b6-e4133790007d",
    "Last_Update": "2026-04-12T23:24:15",
    "Source": "EMODnet Chemistry",
    "Title": "Black Sea - DIVAnd 4D 6-year seasonal analysis of Water body silicate 1980\/2023 v2025",
    "Abstract": "Moving 6-year analysis of Water body silicate in Black Sea for each season: winter (December-February), spring (March-May), summer (June-August), autumn (September-November). Every year of the time dimension corresponds to the 6-year centered average of the season. 6-years periods span from 1980-1985 until 2019-2023.\nData Sources: observational data from SeaDataNet\/EMODNet Chemistry Data Network.\nUnits: umol\/l.\nDIVA analysis: The computation was done with the DIVAnd (Data-Interpolating Variational Analysis in n dimensions), version 2.7.13, using GEBCO 30sec topography for the spatial connectivity of water masses.\nThe horizontal resolution of the produced DIVAnd maps grids is 0.05 degrees.\nThe vertical resolution is 15 depth levels: 0, 5, 10, 20, 30, 40, 50, 60, 70, 80, 90, 100, 125, 150, 200m\nThe horizontal correlation length: 75km.\nThe vertical correlation length (in meters):  twice the vertical resolution (10, 10, 20, 20, 20, 20, 20, 20, 20, 20, 20, 50, 50, 100, 100).\nThe error variance (epsilon2): 1 \nAn anamorphosis transformation was applied to the data: threshold value=200.\nBackground field: not used.\nQuality control of the observations was applied using the interpolated field: QCMETHOD=3 and visual inspection (Observations with residuals outside the minimum and maximum values of the 99% quantile were discarded from the analysis after thoroughly visual inspection)",
    "Organisations": [
        "EMODnet Chemistry",
        "National Institute for Marine Research and Development \u0022Grigore Antipa\u0022",
        "Alfred Wegener Institute Helmholtz Centre for Polar and Marine Research",
        "Bulgarian National Oceanographic Data Centre , Institute of Oceanology",
        "Donskaya offing station North-Caucasus HMS",
        "Hellenic Centre for Marine Research, Institute of Oceanography",
        "Institute of Marine Sciences, Middle East Technical University",
        "Istanbul University, Institute of Marine Science and Management",
        "Kuban offing station, North-Caucasus HMS",
        "Marine Hydrophysical Institute",
        "Mariupol Marine Hydrometeorological Station, Ukrainian HMS",
        "National Environmental Agency of the Ministry of Environment Protection and Natural Resources",
        "North-Caucasus Regional Administration of Hydrometeorology of Roshydromet",
        "Nothern Regional Administration of Hydrometeorology of Roshydromet",
        "Odessa Branch of State Oceanographic Institute",
        "P.P.Shirshov Institute of Oceanology, RAS",
        "Pudos",
        "Royal Netherlands Institute for Sea Research",
        "Sinop University, Fisheries Faculty",
        "State Oceanographic Institute",
        "TUBITAK, Marmara Research Center, Environment Institute (Marine and Inland Waters Management SBU)",
        "Tuapse Hydrometeorological Bureau, North-Caucasus Centre",
        "Ukrainian Hydrometeorological Institute, Marine Branch",
        "Ukrainian scientific center of Ecology of Sea"
    ],
    "Keywords": [
        "Oceanographic geographical features",
        "Black Sea",
        "EMODnet Chemistry"
    ],
    "Parameters": [
        "\n                  water body\n",
        "\n                  Silicates\n",
        "\n                  Water body silicate\n",
        "\n                  Silicate concentration parameters in the water column\n"
    ],
    "Bounding_Box_WestLongitude": 26.5,
    "Bounding_Box_NorthLatitude": 48,
    "Bounding_Box_EastLongitude": 42,
    "Bounding_Box_SouthLatitude": 40,
    "Temporal_Extent_Begin": "1980-01-25",
    "Temporal_Extent_End": "2023-06-28",
    "OnlineResourceUrl": "\/search-details?step=~012097574db-2e61-42d0-86b6-e4133790007d"
}