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Level 1B Products

TES Level 1B data contain radiometric calibrated spectral radiances and their corresponding noise equivalent spectral radiances (NESR). The geolocation, quality and some engineering data are also provided. Each L1B data file contains data from a single TES orbit starting from the South Pole Apex.

A separate product file is produced for each different atmospheric species. Each of these files is referred to an Earth Science Data Type (ESDT). The following table consists of the eight unique nadir and limb files based on the focal plane for an orbit.  A separate file is produced for each filter focal plane.

ESDT Short Name File Format Product Name
TL1BN HDF 5 TES Aura L1B Spectra Nadir
TL1BL HDF 5 TES Aura L1B Spectra Limb
TL1BSOL HDF 5 TES Aura L1B Spectra Low Resolution

The most recent version of publicly available TES Level 1 data is Version 6.

Filenames

The filename for a L1B standard product is constructed using the following template:

TES-Aura_L1B-view_FPFP_r<run id>-o<orbit number>_<version id>.h5

TES-Aura_L1B-view_FPFP_r<run id>-o<orbit number>_calibration designator_<version id>.h5

  • view determines whether the file uses the Nadir or Limb view
  • FP represents the focal plane (1A,1B,2A,2B)
  • run id represents the ten-digit run identification number
  • orbit number represents the starting five-digit Absolute Orbit number, which is the same as the Aura orbit number at the time of the South Pole apex crossing
  • version id represents the version identification number, which is used to keep track of file format changes.

    where: 
    F = File Format placeholder
    ff = 2-digit version number reflecting file Format changes
    cc = 2-digit version number reflecting file Content changes

  • calibration designator: The filename with calibration designator is applicable for all global surveys with run IDs greater than or equal to 11125 and special observations with run IDs greater than or equal to 11189.
  • .h5 extension denotes the use of HDF 5 format

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