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000890290 0247_ $$2doi$$a10.5194/egusphere-egu2020-13607
000890290 037__ $$aFZJ-2021-00871
000890290 1001_ $$0P:(DE-HGF)0$$aSchreiner, Benjamin$$b0$$eCorresponding author
000890290 1112_ $$aEGU 2020$$cOnline$$d2020-05-04 - 2020-05-08$$wonline
000890290 245__ $$aAircraft measurements of nitrous acid in excess of model predictions in the boundary layer and free troposphere
000890290 260__ $$c2020
000890290 3367_ $$033$$2EndNote$$aConference Paper
000890290 3367_ $$2DataCite$$aOther
000890290 3367_ $$2BibTeX$$aINPROCEEDINGS
000890290 3367_ $$2DRIVER$$aconferenceObject
000890290 3367_ $$2ORCID$$aLECTURE_SPEECH
000890290 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1611743958_24154$$xOther
000890290 520__ $$a<p>Middle and long-term &#160;photo-chemical effects of local and regional pollution are not well quantified and are an area of active study. NO<sub>x</sub> (here defined as NO, NO<sub>2</sub>, and HONO) is a regional pollutant, which influences atmospheric oxidation capacity and ozone formation. Airborne measurements of atmospheric trace gases from the HALO (High Altitude Long Range) aircraft, particularly of NO, NO<sub>2</sub>, and HONO were performed as part of the EMeRGe (Effect of Megacities on the Transport and Transformation of Pollutants on the Regional to Global Scales) campaign over continental Europe and southeast Asia in July 2017 and April 2018, respectively. NO (and NO<sub>Y</sub>), O<sub>3</sub>, and the photolysis frequencies of NO<sub>2</sub> and HONO were measured in-situ. NO<sub>2</sub> and HONO were inferred from Limb measurements of the mini-DOAS (Differential Optical Absorption Spectroscopy) instrument, using the novel scaling method (H&#252;neke et al., 2017). These measurements were compared with simulations of the MECO/EMAC models. In relatively polluted air-masses in the boundary layer and free troposphere, HONO measured in excess of model predictions (and previous measurements) suggests an in-situ formation and a significant source of OH as well as a pathway for re-noxification. Aerosol composition simultaneously measured &#160;by the C-Tof-AMS instrument may reveal potential reaction mechanisms to explain the discrepancy.&#160;</p>
000890290 536__ $$0G:(DE-HGF)POF3-243$$a243 - Tropospheric trace substances and their transformation processes (POF3-243)$$cPOF3-243$$fPOF III$$x0
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000890290 7001_ $$00000-0002-7851-6029$$aPfeilsticker, Klaus$$b1
000890290 7001_ $$0P:(DE-HGF)0$$aKluge, Flora$$b2
000890290 7001_ $$0P:(DE-HGF)0$$aRotermund, Meike$$b3
000890290 7001_ $$0P:(DE-HGF)0$$aZahn, Andreas$$b4
000890290 7001_ $$00000-0001-5483-5669$$aZiereis, Helmut$$b5
000890290 7001_ $$0P:(DE-Juel1)2693$$aBohn, Birger$$b6
000890290 7001_ $$0P:(DE-Juel1)130949$$aSchneider, Johannes$$b7$$ufzj
000890290 7001_ $$0P:(DE-HGF)0$$aKaiser, Katharina$$b8
000890290 7001_ $$00000-0003-2440-6104$$aPozzer, Andrea$$b9
000890290 7001_ $$00000-0003-3549-6889$$aMertens, Mariano$$b10
000890290 773__ $$a10.5194/egusphere-egu2020-13607
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000890290 9141_ $$y2020
000890290 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)2693$$aForschungszentrum Jülich$$b6$$kFZJ
000890290 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)130949$$aForschungszentrum Jülich$$b7$$kFZJ
000890290 9131_ $$0G:(DE-HGF)POF3-243$$1G:(DE-HGF)POF3-240$$2G:(DE-HGF)POF3-200$$3G:(DE-HGF)POF3$$4G:(DE-HGF)POF$$aDE-HGF$$bErde und Umwelt$$lAtmosphäre und Klima$$vTropospheric trace substances and their transformation processes$$x0
000890290 9201_ $$0I:(DE-Juel1)IEK-8-20101013$$kIEK-8$$lTroposphäre$$x0
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