Data Processing

The processing and analysis of the FTIR measurements requires firstly a preprocessing of the raw interferograms for the generation of spectra and secondly the quantitative analysis of the absorption spectra for the determination of the desired trace gas abundances. For the latter task, a radiative transfer code and an inversion scheme is applied which fits synthetic spectra to the measurements. For this purpose, the KIT offers source-open tools for both the preprocessing PREPROCESS and the subsequent quantitative trace gas analysis named PROFFAST. PREPROCESS has been developed in the framework of the COCCON-PROCEEDS project supported by ESA. PROFFAST has been developed at KIT to offer a user-friendly application for the trace gas analysis with an optimized performance. PROFFAST accepts *.mod files as used in TCCON for ensuring identical choices for the temperature and water vapor profiles, and the a-priori vertical profiles of the target gases.

The species order in the state vector has been changed. See new input files!!!

Postfix for correcting XCO2, see pdf-document (September 27, 2021)

Software Download:
prf96-EM27-fast (Version 1.0, March 8, 2021)

New PROFFAST Software:
PROFFASTv2.0 (Version 2.0, preliminary version)
PROFFASTv2.1 (Version 2.1, preliminary version)
PROFFASTv2.2 (Version 2.2)
In order to run PROFFASTv2.x.x, you need to download the PROFFAST Pylot.
Version 2.2 works only in combination with PROFFAST Pylot Version 1.1.

proffastPylot (Version 1.1)
Manual on how to run PROFFAST Pylot: Manual

Installation for Linux: install_proffast_linux (Bash Script)

Example Data: example_data_sodankyla (March 24, 2023)

Document Download: Instrument-Calibration (April 30, 2021)

TCCON PROFFAST Support: TCCON-Wiki-Caltech