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Atmospheric Measurement Techniques An interactive open-access journal of the European Geosciences Union

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doi:10.5194/amt-2016-255
© Author(s) 2016. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
09 Aug 2016
Review status
A revision of this discussion paper for further review has not been submitted.
Determination of NOx emissions from Frankfurt Airport by optical spectroscopy (DOAS) – A feasibility study
Erna Frins1, Reza Shaiganfar2, Ulrich Platt3, and Thomas Wagner2 1Instituto de Física, Facultad de Ingeniería, Universidad de la República, Julio Herrera y Reissig 565, Montevideo, Uruguay
2Max-Planck Institut für Chemie, 55128 Mainz, Germany
3Institut für Umweltphysik, Universität Heidelberg, Im Neuenheimer Feld 229, 69120 Heidelberg, Germany
Abstract. Standard methods like in-situ measurements can hardly register NOx (= NO + NO2) emissions from aircrafts during take-off, when engines run at high load and thus an important amount of fuel is consumed and most of the harmful emissions are produced . The goal of this work is to show that it is possible to measure aircraft emissions generated during take-off (and initial part of the climb) by a remote spectroscopic method like automobile – based – Differential Optical Absorption Spectroscopy (Mobile-DOAS), which uses scattered solar radiation in the blue spectral range (around 445 nm). In order to test its feasibility, total column measurements of NO2 encircling Frankfurt Airport were carried out on 23 February 2012 using Mobile-DOAS. Also, NOx fluxes were derived from the NO2 observations. Unlike standard mobile-DOAS measures using a spectrometer looking at zenith, the measurements were performed looking at 22° elevation angle leading to a roughly two to three times higher sensitivity compared to zenith observations. The origin of the observed NO2 is discussed and the total NOx fluxes are calculated. As result of three round-trips encircling the Frankfurt Airport, the mean NOx flux was found to correlate with the number of aircrafts taking-off. Our results demonstrate that mobile-DOAS method is suitable for quantifying emissions from airports and to study their impact in the planetary boundary layer, which is most relevant concerning the impact on the environment and the human health.

Citation: Frins, E., Shaiganfar, R., Platt, U., and Wagner, T.: Determination of NOx emissions from Frankfurt Airport by optical spectroscopy (DOAS) – A feasibility study, Atmos. Meas. Tech. Discuss., doi:10.5194/amt-2016-255, in review, 2016.
Erna Frins et al.
Interactive discussionStatus: closed (peer review stopped)
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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RC1: 'review of Frins et al.', Anonymous Referee #1, 10 Aug 2016 Printer-friendly Version 
 
RC2: 'Review of Determination of NOx emissions from Frankfurt Airport by optical spectroscopy (DOAS) - A feasibility study', Anonymous Referee #2, 26 Aug 2016 Printer-friendly Version 
 
RC3: 'Review', Anonymous Referee #3, 23 Sep 2016 Printer-friendly Version 
Erna Frins et al.
Erna Frins et al.

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Short summary
Standard methods like in-situ measurements can hardly register NOx (= NO + NO2) emissions from aircrafts during take-off, when engines run at high load and thus an important amount of fuel is consumed and most of the harmful emissions are produced . The goal of this work is to show that it is possible to measure aircraft emissions generated during take-off (and initial part of the climb) by a remote spectroscopic method like automobile – based – Differential Optical Absorption Spectroscopy (DOAS).
Standard methods like in-situ measurements can hardly register NOx (= NO + NO2) emissions from...
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