{
  "provider": "UCAR/NCAR COSMIC Program, CDAAC",
  "doi": "10.5065/T353-C093",
  "accessed": "2026-10-28",
  "archive_url": "https://data.cosmic.ucar.edu/gnss-ro/cosmic2/nrt/level2/2024/001/atmPrf_nrt_2024_001.tar.gz",
  "archive_member": "atmPrf_C2E1.2024.001.00.01.G11_0001.0001_nc",
  "profile_sha256": "a71af44f9988fa591062d64eba0adf9c4f99261e72563dc1578e9d9f694e38e3",
  "extract_sha256": "130665a020be67847e9c78370cc613451845f00f34eca4d88cd84d35dff96cd5",
  "selection": "Nearest unmasked MSL_alt to 20, 25 and 30 km, no interpolation. bad must be 0.",
  "source_attributes": {
    "fileStamp": "C2E1.2024.001.00.01.G11",
    "year": 2023,
    "month": 12,
    "day": 31,
    "hour": 23,
    "minute": 58,
    "second": 47.10202407836914,
    "center": "UCAR/CDAAC",
    "inverter": "newroam",
    "parmsfile": "parms12",
    "bad": "0",
    "freq1": "L1C",
    "freq2": "L2L",
    "lat": -17.40891392676578,
    "lon": 148.38495573103938
  },
  "variables": {
    "MSL_alt": {
      "units": "km",
      "long_name": "Mean sea level altitude of perigee point"
    },
    "Ref": {
      "units": "N",
      "long_name": "Refractivity"
    },
    "Pres": {
      "units": "mb",
      "long_name": "Dry pressure"
    },
    "Temp": {
      "units": "C",
      "long_name": "Dry temperature"
    },
    "Lat": {
      "units": "deg",
      "long_name": "Latitude of perigee point"
    },
    "Lon": {
      "units": "deg",
      "long_name": "Longitude of perigee point"
    }
  },
  "calculation": {
    "dry_temperature_kelvin": "77.6 * Pres / Ref",
    "dry_temperature_celsius": "77.6 * Pres / Ref - 273.15",
    "coefficient_units": "K/hPa, with dimensionless N",
    "pressure_units": "mb = hPa",
    "reference": "Kursinski et al. 1997, equations 7-9",
    "comparison": "Temp is generated by the same retrieval. Agreement checks the conversion, not independent temperature accuracy."
  }
}