FTIR retrieval code SFIT4

I cooperate with Jim Hannigan on the maintenance and improvment of the retrieval software sfit4.
Recent addons:

the use of a semianlytic calculation of the Jacobian
The possibility to calculate the full radiative transfer to allow the analysis of spectra obtained in emission.
The retrieval of an emiting background. This becomes important when the light source is weaker or of similar temperature than the atmosphere, e.g. absorption spectroscopy using the moon as a light source or emission spectroscopy. An example is an aerosol layer in the lower troposphere.

Currently being worked on:

The inclusion of the pCqSDHC line shape published be Tran et.al. (2013)
The use of an improved spectroscopy (compare projects FTIR spectroscopy and FTIR spectroscopy II in Projects )

For more information of the code, either write an email (mathias (dot) palm (at) uni (hyphen) bremen (dot) de), or stay tuned to this page.

H. Tran and N.H. Ngo and J.-M. Hartmann

Efficient computation of some speed-dependent isolated line profiles

Journal of Quantitative Spectroscopy and Radiative Transfer, 2013, Vol. 134,pp. 104