{
  "title": "吉隆县 GFS 气压高度与风场 数据",
  "purpose": "支撑 2026 年 8 月 26 日吉隆县泥石流灾害分析的开放共享气象数据",
  "format": "GRIB2",
  "topic": "气压高度与风场",
  "description": "气压、位势高度、地形高度、不同高度风场、阵风、垂直速度、涡度、风切变和风暴运动",
  "spatial_reference": "WGS84",
  "grid_bounds_wgs84": [
    84.375,
    28.125,
    86.375,
    29.375
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  "grid_shape": [
    5,
    8
  ],
  "cropping_note": "覆盖吉隆县的最小规则网格窗口；未按行政边界掩膜。",
  "boundary_file": "吉隆县边界.geojson",
  "boundary_sha256": "adca06b66e079e7f24fa92d97f10f7649f51604afad87f1ccc28f40366938bfd",
  "initial_time_utc": "2026-08-25T00:00:00Z",
  "forecast_leads_hours": [
    0,
    6,
    12,
    18,
    24,
    30,
    36,
    42,
    48,
    54,
    60,
    66,
    72
  ],
  "files": [
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      "size_bytes": 152955
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      "forecast_lead_hours": 12,
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  "total_size_bytes": 2006235,
  "variables": {
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      "units": "m s**-1",
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      "name": "10 metre V wind component",
      "units": "m s**-1",
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      "levels": {
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    "VRATE": {
      "name": "Ventilation Rate",
      "units": "m**2 s**-1",
      "step_types": [
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      "message_count": 13
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      "name": "Absolute vorticity",
      "units": "s**-1",
      "step_types": [
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      "message_count": 533
    },
    "gh": {
      "name": "Geopotential height",
      "units": "gpm",
      "step_types": [
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      ],
      "levels": {
        "cloudCeiling": [
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        "highestTroposphericFreezing": [
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      "message_count": 624
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    "gust": {
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      "units": "m s**-1",
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      "levels": {
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      },
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    "icaht": {
      "name": "ICAO Standard Atmosphere reference height",
      "units": "m",
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        "tropopause": [
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      "message_count": 26
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    "mslet": {
      "name": "MSLP (Eta model reduction)",
      "units": "Pa",
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    "orog": {
      "name": "Orography",
      "units": "m",
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      "levels": {
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      "message_count": 13
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    "plpl": {
      "name": "Pressure of level from which parcel was lifted",
      "units": "Pa",
      "step_types": [
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      ],
      "levels": {
        "pressureFromGroundLayer": [
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        ]
      },
      "message_count": 13
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    "pres": {
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      "units": "Pa",
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      ],
      "levels": {
        "convectiveCloudBottom": [
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        "convectiveCloudTop": [
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        "heightAboveGround": [
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        "maxWind": [
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        "potentialVorticity": [
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        ]
      },
      "message_count": 76
    },
    "prmsl": {
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      "units": "Pa",
      "step_types": [
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      ],
      "levels": {
        "meanSea": [
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        ]
      },
      "message_count": 13
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    "sp": {
      "name": "Surface pressure",
      "units": "Pa",
      "step_types": [
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      ],
      "levels": {
        "surface": [
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        ]
      },
      "message_count": 13
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    "trpp": {
      "name": "Tropopause pressure",
      "units": "Pa",
      "step_types": [
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      ],
      "levels": {
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        ]
      },
      "message_count": 13
    },
    "u": {
      "name": "U component of wind",
      "units": "m s**-1",
      "step_types": [
        "instant"
      ],
      "levels": {
        "heightAboveGround": [
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          30,
          40,
          50,
          80,
          100
        ],
        "heightAboveSea": [
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          3658
        ],
        "isobaricInPa": [
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        ],
        "isobaricInhPa": [
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        ],
        "maxWind": [
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        "planetaryBoundaryLayer": [
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        "potentialVorticity": [
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          2000
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        "pressureFromGroundLayer": [
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        "tropopause": [
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    "unknown": {
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      "units": "unknown",
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      "levels": {
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        "surface": [
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    },
    "ustm": {
      "name": "U-component storm motion",
      "units": "m s**-1",
      "step_types": [
        "instant"
      ],
      "levels": {
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          6000
        ]
      },
      "message_count": 13
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    "v": {
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      "units": "m s**-1",
      "step_types": [
        "instant"
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          40,
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          100
        ],
        "heightAboveSea": [
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        ],
        "isobaricInPa": [
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        "isobaricInhPa": [
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        ],
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        "planetaryBoundaryLayer": [
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        "potentialVorticity": [
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        "pressureFromGroundLayer": [
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        "sigma": [
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        ],
        "tropopause": [
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        ]
      },
      "message_count": 741
    },
    "vstm": {
      "name": "V-component storm motion",
      "units": "m s**-1",
      "step_types": [
        "instant"
      ],
      "levels": {
        "heightAboveGroundLayer": [
          6000
        ]
      },
      "message_count": 13
    },
    "vwsh": {
      "name": "Vertical speed shear",
      "units": "s**-1",
      "step_types": [
        "instant"
      ],
      "levels": {
        "potentialVorticity": [
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          2000
        ],
        "tropopause": [
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        ]
      },
      "message_count": 39
    },
    "w": {
      "name": "Vertical velocity",
      "units": "Pa s**-1",
      "step_types": [
        "instant"
      ],
      "levels": {
        "isobaricInPa": [
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          1000
        ],
        "sigma": [
          1
        ]
      },
      "message_count": 546
    },
    "wz": {
      "name": "Geometric vertical velocity",
      "units": "m s**-1",
      "step_types": [
        "instant"
      ],
      "levels": {
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        ],
        "isobaricInhPa": [
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          850,
          900,
          925,
          950,
          975,
          1000
        ]
      },
      "message_count": 533
    }
  },
  "data_note": "数据是吉隆县外接规则网格窗口，使用县域统计时应以本目录的边界文件对栅格掩膜。"
}