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000015134 084__ $$2WoS$$aMeteorology & Atmospheric Sciences
000015134 1001_ $$0P:(DE-HGF)0$$aVoigt, C.$$b0
000015134 245__ $$aIn-situ observations of young contails overview and selected results from the CONCERT campagin
000015134 260__ $$aKatlenburg-Lindau$$bEGU$$c2010
000015134 300__ $$a9039 - 9056
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000015134 440_0 $$09601$$aAtmospheric Chemistry and Physics$$v10$$x1680-7316$$y18
000015134 500__ $$aThe CONCERT campaign was organized by the HGF-junior research group AEROTROP (Impact of Aircraft Emissions on the heteROgeneous chemistry of the TROPopause region). Part of this work was funded within the DLR-project CATS (Climate-compatible Air Transport System) and by the DFG SPP HALO 1294. We thank the DLR flight department for their excellent support during the campaign. A. Giez is greatfully acknowledged for his help with the calibration of the dewpoint hygrometer. ECMWF forecasts were provided in the context of the ECMWF Special Project: Support Tool for HALO Missions.
000015134 520__ $$aLineshaped contrails were detected with the research aircraft Falcon during the CONCERT - CONtrail and Cirrus ExpeRimenT - campaign in October/November 2008. The Falcon was equipped with a set of instruments to measure the particle size distribution, shape, extinction and chemical composition as well as trace gas mixing ratios of sulfur dioxide (SO2), reactive nitrogen and halogen species (NO, NOy, HNO3, HONO, HCl), ozone (O-3) and carbon monoxide (CO). During 12 mission flights over Europe, numerous contrails, cirrus clouds and a volcanic aerosol layer were probed at altitudes between 8.5 and 11.6 km and at temperatures above 213 K. 22 contrails from 11 different aircraft were observed near and below ice saturation. The observed NO mixing ratios, ice crystal and soot number densities are compared to a process based contrail model. On 19 November 2008 the contrail from a CRJ-2 aircraft was penetrated in 10.1 km altitude at a temperature of 221 K. The contrail had mean ice crystal number densities of 125 cm(-3) with effective radii r(eff) of 2.6 mu m. The presence of particles with r > 50 mu m in the less than 2 min old contrail suggests that natural cirrus crystals were entrained in the contrail. Mean HONO/NO (HONO/NOy) ratios of 0.037 (0.024) and the fuel sulfur conversion efficiency to H2SO4 (epsilon(S)down arrow) of 2.9% observed in the CRJ-2 contrail are in the range of previous measurements in the gaseous aircraft exhaust. On 31 October 2010 aviation NO emissions could have contributed by more than 40% to the regional scale NO levels in the mid-latitude lowest stratosphere. The CONCERT observations help to better quantify the climate impact from contrails and will be used to investigate the chemical processing of trace gases on contrails.
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000015134 7001_ $$0P:(DE-HGF)0$$aSchumann, U.$$b1
000015134 7001_ $$0P:(DE-HGF)0$$aJurkat, T.$$b2
000015134 7001_ $$0P:(DE-HGF)0$$aSchäuble, D.$$b3
000015134 7001_ $$0P:(DE-HGF)0$$aSchlager, H.$$b4
000015134 7001_ $$0P:(DE-HGF)0$$apetzold, A.$$b5
000015134 7001_ $$0P:(DE-HGF)0$$aGayet, J.F.$$b6
000015134 7001_ $$0P:(DE-Juel1)129131$$aKrämer, M.$$b7$$uFZJ
000015134 7001_ $$0P:(DE-HGF)0$$aSchneider, J.$$b8
000015134 7001_ $$0P:(DE-HGF)0$$aBorrmann, S.$$b9
000015134 7001_ $$0P:(DE-HGF)0$$aSchmale, J.$$b10
000015134 7001_ $$0P:(DE-HGF)0$$aJessberger, P.$$b11
000015134 7001_ $$0P:(DE-HGF)0$$aHamburger, T.$$b12
000015134 7001_ $$0P:(DE-HGF)0$$aLichenstern, M.$$b13
000015134 7001_ $$0P:(DE-HGF)0$$aScheibe, M.$$b14
000015134 7001_ $$0P:(DE-HGF)0$$aGourbeyre, C.$$b15
000015134 7001_ $$0P:(DE-Juel1)129137$$aMeyer, J.$$b16$$uFZJ
000015134 7001_ $$0P:(DE-HGF)0$$aKübbeler, M.$$b17
000015134 7001_ $$0P:(DE-HGF)0$$aFrey, W.$$b18
000015134 7001_ $$0P:(DE-HGF)0$$aKalesse, H.$$b19
000015134 7001_ $$0P:(DE-HGF)0$$aButler, K.$$b20
000015134 7001_ $$0P:(DE-HGF)0$$aLawrence, M.G.$$b21
000015134 7001_ $$0P:(DE-HGF)0$$aHolzäpfle, F.$$b22
000015134 7001_ $$0P:(DE-HGF)0$$aArnold, F.$$b23
000015134 7001_ $$0P:(DE-HGF)0$$aWendisch, M.$$b24
000015134 7001_ $$0P:(DE-HGF)0$$aDöpelheuer, A.$$b25
000015134 7001_ $$0P:(DE-HGF)0$$aGotsschaldt, K.$$b26
000015134 7001_ $$0P:(DE-HGF)0$$aBaumann, R.$$b27
000015134 7001_ $$0P:(DE-HGF)0$$aZöger, M.$$b28
000015134 7001_ $$0P:(DE-HGF)0$$aSölch, I.$$b29
000015134 7001_ $$0P:(DE-HGF)0$$aRautenhaus, M.$$b30
000015134 7001_ $$0P:(DE-HGF)0$$aDörnbrack, A.$$b31
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