importhitran( par_file )

Reads the High-resolution Transmission Molecular Absorption Database (HITRAN) into a structure in the MATLAB workspace.
HITRAN is a collection of data of spectroscopic parameters related to the transmission of light through the atmosphere. It is compiled by the Harvard–Smithsonian Center for Astrophysics.

This function requires a copy of the HITRAN database. The database is available from the Harvard–Smithsonian Center for Astrophysics by completing their online request form.

The fields of the structure are:
isotopologueNumber
transitionWavenumber
lineIntensity
einsteinACoefficient
airBroadenedWidth
selfBroadenedWidth
lowerStateEnergy
temperatureDependence
pressureShift
upperVibrationalQuanta
lowerVibrationalQuanta
upperLocalQuanta
lowerLocalQuanta
errorCodes
referenceCodes
flagForLineMixing
upperStatisticalWeight
lowerStatisticalWeight