RT Dataset -- Updated radiative transfer model for Titan in the near-infrared wavelength range: Validation against Huygens atmospheric and surface measurements and application to the Cassini/VIMS observations of the Dragonfly landing area

This dataset contains all Radiative Transfer (RT) results made for the paper.

The data are stored in 5 zipped-folders names with the Cassini/VIMS cube flyby and id, or explicitly for Huygens/ULIS calibrated observations:

• TB_C1481624349_1
• T40_C1578266417_1
• T38_C1575509158_1
• T40_C1578263500_1
• T40_C1578263152_1
• ULIS_observations

The HLS folder contains the Cassini/VIMS cubes, the HLS end-member (End_member.txt), and the corresponding surface albedo (Surface_albedo.txt).

In these folders, each VIMS pixel is stored in a .txt file with the following pattern:

<CUBE_ID>_<PIXEL_SAMPLE>_<PIXEL_LINE> .txt

It starts with a header describing the observation: 

• CUBE_ID: the VIMS cube id (`C1234567890_1` format)
• SAMPLE: the pixel sample number.
• LINE: the pixel line number.
• LONG: the pixel longitude (in degree).
• LAT: the pixel latitude (in degree).
• INC: the surface incident angle (in degree).
• EMI: the surface emergent angle (in degree).
• PHASE: the surface phase angle (in degree).

For the Selk crater cubes (T40_C1578266417_1, T38_C1575509158_1, T40_C1578263500_1, T40_C1578263152_1), the header also contains the spatial sampling and the radiative transfer model outputs: 

• Spatial sampling (km/pix).
• Fh: the haze scaling factor.
• Fm: the mist scaling factor.
• 1-sigma (Fh): the 1-sigma uncertainty on Fh.
• 1-sigma (Fm): the 1-sigma uncertainty on Fm.
• Reduced chi2: the reduced chi2. 

Then contains the observed spectra:

• Column 1: the VIMS channel central wavelength (in micrometers).
• Column 2: the VIMS pixel I/F.
• Column 3: the VIMS pixel I/F 1-sigma uncertainty. 

For the Selk crater cubes (T40_C1578266417_1, T38_C1575509158_1, T40_C1578263500_1, T40_C1578263152_1), 3 columns are added for: 

• Column 4: the surface albedo.
• Column 5: the upper 1-sigma uncertainty on the surface albedo.
• Column 6 : the lower 1-sigma uncertainty on the surface albedo.

The ULIS folder contains the Huygens/ULIS calibrated observations (in I/F) and the simulations with 1-sigma uncertainties as a function of the altitude (in km):

• Column 1: the VIMS channel central wavelength (in micrometers), stopped at the end of the Huygens/ULIS wavelength range.
• Column 2: the ULIS I/F.
• Column 3 : the simulated I/F.
• Column 4: the lower 1-sigma uncertainty on the simulation.
• Column 5 : the upper 1-sigma uncertainty on the simulation.