Regensburg 2007 – wissenschaftliches Programm

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UP: Fachverband Umweltphysik

UP 7: Poster: Atmosphäre und Klima

UP 7.3: Poster

Dienstag, 27. März 2007, 14:00–15:00, Poster C

New Operational Software for Automatic DOAS Measurement and Analysis — •André Merten — Institut für Umweltphysik; Im Neuenheimer Feld 229; 69120 Heidelberg

The opportunity offered by the DOAS (Differential Absorption Spectroscopy) method to do an automatic measurement and analysis of atmospheric trace gases has not been used because of the leak of adequate software. The requirements of modern measurement software were studied and a new, easier to handle DOAS-software, 'LabDOAS', was developed, which can be used to monitor trace gases: These requirements realized in the software packages are: - Reliable communication with instrument controllers - Complete control by graphical user interface - Status of the devices and the measurement is reported by graphs - Recording of all important information together with the spectra - Parallel execution of measurement and data analysis - Automatic documentation of measurement and analysis - Analysing and visualisation of huge data sets This software package was tested successful at long path telescopes, laboratory measurements and in the analysing of extended data sets of spectroscopic measurements. Its functionality exceeds common DOAS analysis programs, since it not only offers enhanced mathematical manipulations of spectra, but also includes tools for statistical analysis of residual structures and concentration time series. An example application for automatic air pollution monitoring with long path DOAS and economic LED light source is presented.