{
    "_ARRAY_DIMENSIONS": [
        "time",
        "lat",
        "lon"
    ],
    "comment": "mask can be used to further filter the data.",
    "flag_masks": [
        1,
        2,
        4,
        8,
        16
    ],
    "flag_meanings": "1=open-sea, 2=land, 5=open-lake, 9=open-sea with ice in the grid, 13=open-lake with ice in the grid",
    "flag_values": [
        1,
        2,
        5,
        9,
        13
    ],
    "long_name": "sea/land field composite mask",
    "source": "GMT \"grdlandmask\", ice flag from sea_ice_fraction data",
    "valid_max": 31,
    "valid_min": 1
}