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000902387 0247_ $$2doi$$a10.5194/amt-2021-180
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000902387 037__ $$aFZJ-2021-04221
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000902387 1001_ $$00000-0002-5662-8476$$aNussbaumer, Clara M.$$b0$$eCorresponding author
000902387 245__ $$aNew photolytic converter for improving aircraft measurements of NO<sub>2</sub> via chemiluminescence
000902387 260__ $$aKatlenburg-Lindau$$bCopernicus$$c2021
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000902387 520__ $$aAbstract. Nitrogen oxides (NOx ≡ NO + NO2) are centrally involved in the photochemical processes taking place in the earth’s atmosphere. Measurements of NO2, particularly in remote areas where concentrations are of the order of pptv, are still a challenge and subject to extensive research. In this study, we present NO2 measurements via photolysis-chemiluminescence during the research aircraft campaign CAFE Africa (Chemistry of the Atmosphere – Field Experiment in Africa) 2018 around Cabo Verde as well as the results of laboratory experiments to characterize the photolytic converter used. We identify a memory effect within the conventional photolytic converter associated with high NO concentrations and rapidly changing water vapor concentrations, accompanying changes in altitude during aircraft measurements, which is due to the porous structure of the converter material. We test and characterize an alternative photolytic converter made from quartz glass which improves the reliability of NO2 measurements in laboratory and field studies.
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000902387 7001_ $$0P:(DE-HGF)0$$aParchatka, Uwe$$b1
000902387 7001_ $$00000-0003-4419-2502$$aTadic, Ivan$$b2
000902387 7001_ $$0P:(DE-Juel1)2693$$aBohn, Birger$$b3
000902387 7001_ $$00000-0001-9417-587X$$aMarno, Daniel$$b4
000902387 7001_ $$0P:(DE-HGF)0$$aMartinez, Monica$$b5
000902387 7001_ $$0P:(DE-HGF)0$$aRohloff, Roland$$b6
000902387 7001_ $$00000-0002-6868-714X$$aHarder, Hartwig$$b7
000902387 7001_ $$0P:(DE-HGF)0$$aKluge, Flora$$b8
000902387 7001_ $$00000-0002-7851-6029$$aPfeilsticker, Klaus$$b9
000902387 7001_ $$00000-0002-7327-8893$$aObersteiner, Florian$$b10
000902387 7001_ $$00000-0001-8291-345X$$aZöger, Martin$$b11
000902387 7001_ $$0P:(DE-HGF)0$$aDoerich, Raphael$$b12
000902387 7001_ $$00000-0001-8669-0230$$aCrowley, John N.$$b13
000902387 7001_ $$00000-0001-6307-3846$$aLelieveld, Jos$$b14
000902387 7001_ $$0P:(DE-HGF)0$$aFischer, Horst$$b15
000902387 773__ $$0PERI:(DE-600)2507817-3$$a10.5194/amt-2021-180$$tAtmospheric measurement techniques discussions$$x1867-8610$$y2021
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