We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
The IAGOS NO<sub>x</sub> Instrument - Design, Operation and First Results from Deployment aboard Passenger Aircraft.
- Authors
Berkes, Florian; Houben, Norbert; Bundke, Ulrich; Franke, Harald; Pätz, Hans-Werner; Rohrer, Franz; Wahner, Andreas; Petzold, Andreas
- Abstract
We describe the nitrogen oxides instrument designed for the autonomous operation on board of passenger aircraft in the framework of the European Research Infrastructure IAGOS (In-service Aircraft for a Global Observing System, http://www.iagos.org). We demonstrate the performance of the instrument using data from two deployment periods aboard an A340-300 aircraft of Deutsche Lufthansa. The well-established hemiluminescence detection method is used to measure nitrogen monoxide (NO) and nitrogen oxides (NOx). NOx is measured using a photolytic converter, and nitrogen dioxide (NO2) is determined from the difference between NOx and NO. This technique allows to measure at high time resolution (4 s) and high precision (2σ) in the low ppt range (NO of 24 ppt and NOx of 35 ppt) over different ambient temperature and ambient pressure altitude ranges (from surface pressure down to 190 hPa). The IAGOS NOx instrument is characterized for (1) calibration stability and total uncertainty (2) humidity and chemical interferences (e.g. ozone, HONO, PAN) and (3) inter-instrumental precision. We demonstrate that the IAGOS NOx instrument is a robust, fully automated, and long-term stable instrument suitable for unattended operation on airborne platforms, which provides useful measurements for future air quality studies and emission estimates.
- Subjects
DRONE aircraft; NITROGEN oxide analysis; SCIENTIFIC apparatus &; instruments
- Publication
Atmospheric Measurement Techniques Discussions, 2017, p1
- ISSN
1867-8610
- Publication type
Article
- DOI
10.5194/amt-2017-435