MODTRAN6 offers a new GUI that enables users to load existing cases, interactively
enter or modify inputs, save their JSON formatted input files, run MODTRAN6, and
graphically view the newly generated spectral output data.
Users can choose to entirely avoid editing text input files and instead may run
MODTRAN6 through an interactive graphical user interface (GUI).
A Line-By-Line (LBL) radiative transfer option has been developed for MODTRAN®.
The MODTRAN® algorithm solves the LBL radiative transfer equations at arbitrarily fine
spectral resolution within 0.1 cm-1 spectral bins, stitching together contiguous bins to
build the full band pass spectral.
The advantage of the narrow spectral bin approach is that
tail contributions from molecular transitions centered more than 0.05 cm-1 from a bin edge
can be pre-calculated analytically. The number of transitions that must be modeled on-the-fly
for any given 0.1 cm-1 bin is quite modest.
The local chemical cloud option can be combined with the MODTRAN® multiple line-of-sight (MLOS)
option to generate cloud images from a single MODTRAN® run. MODTRAN6 band model data is provided
for the HITRAN line compilation molecular species.
An Aerosol Toolkit (ATK) was developed as a pre-processing adjunct to the MODTRAN code.
This suite of software tools generates aerosol optical property and profile data, in MODTRAN’s
SAP (Spectral Aerosol Profile) format, from user input aerosol specifications.