Articles | Volume 9, issue 6
https://doi.org/10.5194/amt-9-2721-2016
https://doi.org/10.5194/amt-9-2721-2016
Research article
 | 
29 Jun 2016
Research article |  | 29 Jun 2016

A miniDOAS instrument optimised for ammonia field measurements

Jörg Sintermann, Klaus Dietrich, Christoph Häni, Michael Bell, Markus Jocher, and Albrecht Neftel

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Short summary
We present a DOAS instrument optimised for open-path field measurements of ambient ammonia (NH3) alongside nitrogen oxide (NO) and sulfur dioxide (SO2). We use a temperature-controlled spectrometer, a deuterium light source and a modified optical arrangement. The system was set up in a robust, field-deployable, temperature-regulated housing. For the evaluation of light spectra a new high-pass filter routine based upon robust baseline extraction with local regression was used.