000890275 001__ 890275 000890275 005__ 20240709081747.0 000890275 0247_ $$2doi$$a10.5194/egusphere-egu2020-8992 000890275 037__ $$aFZJ-2021-00856 000890275 1001_ $$0P:(DE-Juel1)136669$$aPetzold, Andreas$$b0$$eCorresponding author 000890275 1112_ $$aEGU 2020$$cOnline$$d2020-05-04 - 2020-05-08$$wonline 000890275 245__ $$aVertical distribution, seasonality and troposphericity of icesupersaturated air masses in the northern mid-latitudes from regular in-situ observations by passenger aircraft 000890275 260__ $$c2020 000890275 3367_ $$033$$2EndNote$$aConference Paper 000890275 3367_ $$2DataCite$$aOther 000890275 3367_ $$2BibTeX$$aINPROCEEDINGS 000890275 3367_ $$2DRIVER$$aconferenceObject 000890275 3367_ $$2ORCID$$aLECTURE_SPEECH 000890275 3367_ $$0PUB:(DE-HGF)6$$2PUB:(DE-HGF)$$aConference Presentation$$bconf$$mconf$$s1611741741_26809$$xOther 000890275 520__ $$a<p>The vertical distribution and seasonal variation of water vapour volume mixing ratio (H<sub>2</sub>O VMR), relative humidity with respect to ice (RH<sub>ice</sub>) and particularly of regions with ice-supersaturated air masses (ISSR) in the extratropical upper troposphere and lowermost stratosphere are investigated at northern mid-latitudes over the regions Eastern North America, the North Atlantic and Europe for the period 1995 to 2010.</p><p>Observation data originate from regular and continuous long-term measurements of H<sub>2</sub>O VMR, temperature and RH<sub>ice</sub> by instrumented passenger aircraft in the framework of the European research program MOZAIC which is continued as European research infrastructure IAGOS (from 2011; see www.iagos.org). The observation data are analysed with respect to the thermal and dynamical tropopauses, as provided by ERA-Interim. Additionally, collocated O<sub>3</sub> observations from MOZAIC are used as tracer for stratospheric air masses.</p><p>Our key results provide in-depth insight into seasonal and regional variability and tropospheric nature of ice-supersaturated air masses at various distances from the tropopause layer. For the vertical distribution and seasonal variation of ISSR occurrence we show a comparison of our results to radio soundings and to satellite observations of cirrus cloud occurrence from AIRS and TOVs Path B instruments. Finally, for all three regions, we investigate the trends and the dependencies of ISSR occurrence on the North Atlantic Oscillation (NAO) index.</p> 000890275 536__ $$0G:(DE-HGF)POF3-243$$a243 - Tropospheric trace substances and their transformation processes (POF3-243)$$cPOF3-243$$fPOF III$$x0 000890275 588__ $$aDataset connected to CrossRef 000890275 7001_ $$0P:(DE-Juel1)129146$$aRohs, Susanne$$b1$$ufzj 000890275 7001_ $$0P:(DE-Juel1)176318$$aRütimann, Mihal$$b2$$ufzj 000890275 7001_ $$0P:(DE-Juel1)161340$$aNeis, Patrick$$b3 000890275 7001_ $$0P:(DE-Juel1)166303$$aFlorian, Berkes$$b4 000890275 7001_ $$0P:(DE-HGF)0$$aHerman, Smit$$b5 000890275 7001_ $$0P:(DE-Juel1)129131$$aMartina, Krämer$$b6 000890275 7001_ $$0P:(DE-HGF)0$$aNicole, Spelten$$b7 000890275 7001_ $$00000-0003-4008-4977$$aPeter, Spichtinger$$b8 000890275 7001_ $$0P:(DE-HGF)0$$aPhilippe, Nedelec$$b9 000890275 7001_ $$0P:(DE-Juel1)16324$$aAndreas, Wahner$$b10 000890275 773__ $$a10.5194/egusphere-egu2020-8992 000890275 909CO $$ooai:juser.fz-juelich.de:890275$$pVDB 000890275 9141_ $$y2020 000890275 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)136669$$aForschungszentrum Jülich$$b0$$kFZJ 000890275 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129146$$aForschungszentrum Jülich$$b1$$kFZJ 000890275 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)176318$$aForschungszentrum Jülich$$b2$$kFZJ 000890275 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129131$$aForschungszentrum Jülich$$b6$$kFZJ 000890275 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)16324$$aForschungszentrum Jülich$$b10$$kFZJ 000890275 9131_ $$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$$x0 000890275 9201_ $$0I:(DE-Juel1)IEK-8-20101013$$kIEK-8$$lTroposphäre$$x0 000890275 980__ $$aconf 000890275 980__ $$aVDB 000890275 980__ $$aI:(DE-Juel1)IEK-8-20101013 000890275 980__ $$aUNRESTRICTED 000890275 981__ $$aI:(DE-Juel1)ICE-3-20101013