000858146 001__ 858146 000858146 005__ 20240712100751.0 000858146 0247_ $$2doi$$a10.5194/acp-18-15643-2018 000858146 0247_ $$2ISSN$$a1680-7316 000858146 0247_ $$2ISSN$$a1680-7324 000858146 0247_ $$2ISSN$$a= 000858146 0247_ $$2ISSN$$aAtmospheric 000858146 0247_ $$2ISSN$$achemistry 000858146 0247_ $$2ISSN$$aand 000858146 0247_ $$2ISSN$$aphysics 000858146 0247_ $$2ISSN$$a(Online) 000858146 0247_ $$2Handle$$a2128/20308 000858146 0247_ $$2WOS$$aWOS:000448701900007 000858146 0247_ $$2altmetric$$aaltmetric:50479893 000858146 037__ $$aFZJ-2018-07053 000858146 082__ $$a550 000858146 1001_ $$0P:(DE-HGF)0$$aWoiwode, Wolfgang$$b0$$eCorresponding author 000858146 245__ $$aMesoscale fine structure of a tropopause fold over mountains 000858146 260__ $$aKatlenburg-Lindau$$bEGU$$c2018 000858146 3367_ $$2DRIVER$$aarticle 000858146 3367_ $$2DataCite$$aOutput Types/Journal article 000858146 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1544018911_1244 000858146 3367_ $$2BibTeX$$aARTICLE 000858146 3367_ $$2ORCID$$aJOURNAL_ARTICLE 000858146 3367_ $$00$$2EndNote$$aJournal Article 000858146 520__ $$aWe report airborne remote-sensing observations of a tropopause fold during two crossings of the polar front jet over northern Italy on 12 January 2016. The GLORIA (Gimballed Limb Observer for Radiance Imaging of the Atmosphere) observations allowed for a simultaneous mapping of temperature, water vapour, and ozone. They revealed deep, dry, and ozone-rich intrusions into the troposphere. The mesoscale fine structures of dry filaments at the cyclonic shear side north of the jet and tongues of moist air entraining tropospheric air into the stratosphere along the anticyclonic shear side south of the jet were clearly resolved by GLORIA observations. Vertically propagating mountain waves with recorded temperature residuals exceeding ±3K were detected above the Apennines. Their presence enhanced gradients of all variables locally in the vicinity of the tropopause. The combination of H2O − O3 correlations with potential temperature reveals an active mixing region and shows clear evidence of troposphere-to-stratosphere and stratosphere-to-troposphere exchange. High-resolution short-term deterministic forecasts of ECMWF's integrated forecast system (IFS) applying GLORIA's observational filter reproduce location, shape, and depth of the tropopause fold very well. The fine structure of the mixing region, however, cannot be reproduced even with the 9km horizontal resolution of the IFS, used here. This case study demonstrates convincingly the capabilities of linear limb-imaging observations to resolve mesoscale fine structures in the upper troposphere and lower stratosphere, validates the high quality of the IFS data, and suggests that mountain wave perturbations have the potential to modulate exchange processes in the vicinity of tropopause folds. 000858146 536__ $$0G:(DE-HGF)POF3-244$$a244 - Composition and dynamics of the upper troposphere and middle atmosphere (POF3-244)$$cPOF3-244$$fPOF III$$x0 000858146 588__ $$aDataset connected to CrossRef 000858146 7001_ $$00000-0003-0936-0216$$aDörnbrack, Andreas$$b1 000858146 7001_ $$00000-0002-4892-9615$$aBramberger, Martina$$b2 000858146 7001_ $$00000-0003-2016-2800$$aFriedl-Vallon, Felix$$b3 000858146 7001_ $$0P:(DE-HGF)0$$aHaenel, Florian$$b4 000858146 7001_ $$00000-0002-4174-9531$$aHöpfner, Michael$$b5 000858146 7001_ $$00000-0002-9642-1955$$aJohansson, Sören$$b6 000858146 7001_ $$00000-0001-8923-5516$$aKretschmer, Erik$$b7 000858146 7001_ $$0P:(DE-Juel1)165731$$aKrisch, Isabell$$b8 000858146 7001_ $$0P:(DE-HGF)0$$aLatzko, Thomas$$b9 000858146 7001_ $$0P:(DE-HGF)0$$aOelhaf, Hermann$$b10 000858146 7001_ $$0P:(DE-HGF)0$$aOrphal, Johannes$$b11 000858146 7001_ $$0P:(DE-Juel1)129143$$aPreusse, Peter$$b12$$ufzj 000858146 7001_ $$00000-0001-9608-7320$$aSinnhuber, Björn-Martin$$b13 000858146 7001_ $$0P:(DE-Juel1)129105$$aUngermann, Jörn$$b14$$ufzj 000858146 773__ $$0PERI:(DE-600)2069847-1$$a10.5194/acp-18-15643-2018$$gVol. 18, no. 21, p. 15643 - 15667$$n21$$p15643 - 15667$$tAtmospheric chemistry and physics$$v18$$x1680-7324$$y2018 000858146 8564_ $$uhttps://juser.fz-juelich.de/record/858146/files/acp-18-15643-2018.pdf$$yOpenAccess 000858146 8564_ $$uhttps://juser.fz-juelich.de/record/858146/files/acp-18-15643-2018.pdf?subformat=pdfa$$xpdfa$$yOpenAccess 000858146 909CO $$ooai:juser.fz-juelich.de:858146$$pdnbdelivery$$pVDB$$pVDB:Earth_Environment$$pdriver$$popen_access$$popenaire 000858146 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)165731$$aForschungszentrum Jülich$$b8$$kFZJ 000858146 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129143$$aForschungszentrum Jülich$$b12$$kFZJ 000858146 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)129105$$aForschungszentrum Jülich$$b14$$kFZJ 000858146 9131_ $$0G:(DE-HGF)POF3-244$$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$$vComposition and dynamics of the upper troposphere and middle atmosphere$$x0 000858146 9141_ $$y2018 000858146 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS 000858146 915__ $$0LIC:(DE-HGF)CCBY4$$2HGFVOC$$aCreative Commons Attribution CC BY 4.0 000858146 915__ $$0StatID:(DE-HGF)1150$$2StatID$$aDBCoverage$$bCurrent Contents - Physical, Chemical and Earth Sciences 000858146 915__ $$0StatID:(DE-HGF)9905$$2StatID$$aIF >= 5$$bATMOS CHEM PHYS : 2017 000858146 915__ $$0StatID:(DE-HGF)0501$$2StatID$$aDBCoverage$$bDOAJ Seal 000858146 915__ $$0StatID:(DE-HGF)0500$$2StatID$$aDBCoverage$$bDOAJ 000858146 915__ $$0StatID:(DE-HGF)0110$$2StatID$$aWoS$$bScience Citation Index 000858146 915__ $$0StatID:(DE-HGF)0111$$2StatID$$aWoS$$bScience Citation Index Expanded 000858146 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection 000858146 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess 000858146 915__ $$0StatID:(DE-HGF)0030$$2StatID$$aPeer Review$$bDOAJ : Peer review 000858146 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR$$bATMOS CHEM PHYS : 2017 000858146 915__ $$0StatID:(DE-HGF)0310$$2StatID$$aDBCoverage$$bNCBI Molecular Biology Database 000858146 915__ $$0StatID:(DE-HGF)0300$$2StatID$$aDBCoverage$$bMedline 000858146 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bClarivate Analytics Master Journal List 000858146 9201_ $$0I:(DE-Juel1)IEK-7-20101013$$kIEK-7$$lStratosphäre$$x0 000858146 9801_ $$aFullTexts 000858146 980__ $$ajournal 000858146 980__ $$aVDB 000858146 980__ $$aUNRESTRICTED 000858146 980__ $$aI:(DE-Juel1)IEK-7-20101013 000858146 981__ $$aI:(DE-Juel1)ICE-4-20101013