000156248 001__ 156248
000156248 005__ 20240712101003.0
000156248 0247_ $$2doi$$a10.5194/acpd-14-25139-2014
000156248 0247_ $$2ISSN$$a1680-7367
000156248 0247_ $$2ISSN$$a1680-7375
000156248 0247_ $$2Handle$$a2128/9143
000156248 037__ $$aFZJ-2014-05050
000156248 082__ $$a550
000156248 1001_ $$0P:(DE-HGF)0$$aKaiser, J.$$b0
000156248 245__ $$aEvidence for an unidentified ground-level source of formaldehyde in the Po Valley with potential implications for ozone production
000156248 260__ $$aKatlenburg-Lindau$$bEGU$$c2014
000156248 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article$$bjournal$$mjournal$$s1412250812_24559
000156248 3367_ $$2DataCite$$aOutput Types/Journal article
000156248 3367_ $$00$$2EndNote$$aJournal Article
000156248 3367_ $$2BibTeX$$aARTICLE
000156248 3367_ $$2ORCID$$aJOURNAL_ARTICLE
000156248 3367_ $$2DRIVER$$aarticle
000156248 520__ $$aOzone concentrations in the Po Valley of Northern Italy often exceed international regulations. As both a source of radicals and an intermediate in the oxidation of most volatile organic compounds (VOCs), formaldehyde (HCHO) is a useful tracer for the oxidative processing of hydrocarbons that leads to ozone production. We investigate the sources of HCHO in the Po Valley using vertical profile measurements acquired from the airship Zeppelin NT over an agricultural region during the PEGASOS 2012 campaign. Using a 1-D model, the total VOC oxidation rate is examined and discussed in the context of formaldehyde and ozone production in the early morning. While model and measurement discrepancies in OH reactivity are small (on average 3.4±11%), HCHO concentrations are underestimated by as much as 1.5 ppb (45%) in the convective mixed layer. A similar underestimate in HCHO was seen in the 2002–2003 FORMAT Po-Valley measurements, though the additional source of HCHO was not identified. Oxidation of unmeasured VOC precursors cannot explain the missing HCHO source, as measured OH reactivity is explained by measured VOCs and their calculated oxidation products. We conclude that local direct emissions from agricultural land are the most likely source of missing HCHO. Model calculations demonstrate that radicals from degradation of this non-photochemical HCHO source increase model ozone production rates by as much as 0.7 ppb h−1 (10%) before noon.
000156248 536__ $$0G:(DE-HGF)POF2-233$$a233 - Trace gas and aerosol processes in the troposphere (POF2-233)$$cPOF2-233$$fPOF II$$x0
000156248 536__ $$0G:(DE-Juel1)HITEC-20170406$$aHITEC - Helmholtz Interdisciplinary Doctoral Training in Energy and Climate Research (HITEC) (HITEC-20170406)$$cHITEC-20170406$$x1
000156248 588__ $$aDataset connected to CrossRef, juser.fz-juelich.de
000156248 7001_ $$0P:(DE-HGF)0$$aWolfe, G. M.$$b1
000156248 7001_ $$0P:(DE-Juel1)2693$$aBohn, B.$$b2$$ufzj
000156248 7001_ $$0P:(DE-Juel1)7591$$aBroch, S.$$b3$$ufzj
000156248 7001_ $$0P:(DE-Juel1)7363$$aFuchs, H.$$b4$$ufzj
000156248 7001_ $$0P:(DE-HGF)0$$aGanzeveld, L. N.$$b5
000156248 7001_ $$0P:(DE-Juel1)8954$$aGomm, S.$$b6$$ufzj
000156248 7001_ $$0P:(DE-Juel1)5628$$aHäseler, R.$$b7$$ufzj
000156248 7001_ $$0P:(DE-Juel1)16326$$aHofzumahaus, A.$$b8$$ufzj
000156248 7001_ $$0P:(DE-Juel1)16342$$aHolland, F.$$b9$$ufzj
000156248 7001_ $$0P:(DE-Juel1)8740$$aJäger, J.$$b10$$ufzj
000156248 7001_ $$0P:(DE-Juel1)6775$$aLi, Xin$$b11$$ufzj
000156248 7001_ $$0P:(DE-Juel1)136668$$aLohse, I.$$b12$$ufzj
000156248 7001_ $$0P:(DE-Juel1)6776$$aLu, K.$$b13
000156248 7001_ $$0P:(DE-Juel1)16347$$aRohrer, F.$$b14$$ufzj
000156248 7001_ $$0P:(DE-Juel1)2367$$aWegener, R.$$b15$$ufzj
000156248 7001_ $$0P:(DE-Juel1)16346$$aMentel, T. F.$$b16$$ufzj
000156248 7001_ $$0P:(DE-Juel1)4528$$aKiendler-Scharr, A.$$b17$$ufzj
000156248 7001_ $$0P:(DE-Juel1)16324$$aWahner, A.$$b18$$ufzj
000156248 7001_ $$0P:(DE-HGF)0$$aKeutsch, F. N.$$b19$$eCorresponding Author
000156248 773__ $$0PERI:(DE-600)2069857-4$$a10.5194/acpd-14-25139-2014$$gVol. 14, no. 18, p. 25139 - 25165$$n18$$p25139 - 25165$$tAtmospheric chemistry and physics / Discussions$$v14$$x1680-7375$$y2014
000156248 8564_ $$uwww.atmos-chem-phys-discuss.net/14/25139/2014/
000156248 8564_ $$uhttps://juser.fz-juelich.de/record/156248/files/FZJ-2014-05050.pdf$$yOpenAccess
000156248 909CO $$ooai:juser.fz-juelich.de:156248$$pdnbdelivery$$pVDB$$pVDB:Earth_Environment$$pdriver$$popen_access$$popenaire
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)2693$$aForschungszentrum Jülich GmbH$$b2$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)7591$$aForschungszentrum Jülich GmbH$$b3$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)7363$$aForschungszentrum Jülich GmbH$$b4$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)8954$$aForschungszentrum Jülich GmbH$$b6$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)5628$$aForschungszentrum Jülich GmbH$$b7$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)16326$$aForschungszentrum Jülich GmbH$$b8$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)16342$$aForschungszentrum Jülich GmbH$$b9$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)8740$$aForschungszentrum Jülich GmbH$$b10$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)6775$$aForschungszentrum Jülich GmbH$$b11$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)136668$$aForschungszentrum Jülich GmbH$$b12$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)16347$$aForschungszentrum Jülich GmbH$$b14$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)2367$$aForschungszentrum Jülich GmbH$$b15$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)16346$$aForschungszentrum Jülich GmbH$$b16$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)4528$$aForschungszentrum Jülich GmbH$$b17$$kFZJ
000156248 9101_ $$0I:(DE-588b)5008462-8$$6P:(DE-Juel1)16324$$aForschungszentrum Jülich GmbH$$b18$$kFZJ
000156248 9132_ $$0G:(DE-HGF)POF3-243$$1G:(DE-HGF)POF3-240$$2G:(DE-HGF)POF3-200$$aDE-HGF$$bPOF III$$lMarine, Küsten- und Polare Systeme$$vAtmosphäre und Klima$$x0
000156248 9131_ $$0G:(DE-HGF)POF2-233$$1G:(DE-HGF)POF2-230$$2G:(DE-HGF)POF2-200$$3G:(DE-HGF)POF2$$4G:(DE-HGF)POF$$aDE-HGF$$bErde und Umwelt$$lAtmosphäre und Klima$$vTrace gas and aerosol processes in the troposphere$$x0
000156248 9141_ $$y2014
000156248 915__ $$0StatID:(DE-HGF)0020$$2StatID$$aNo Peer Review
000156248 915__ $$0StatID:(DE-HGF)0200$$2StatID$$aDBCoverage$$bSCOPUS
000156248 915__ $$0StatID:(DE-HGF)0500$$2StatID$$aDBCoverage$$bDOAJ
000156248 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess
000156248 915__ $$0LIC:(DE-HGF)CCBY3$$2HGFVOC$$aCreative Commons Attribution CC BY 3.0
000156248 920__ $$lyes
000156248 9201_ $$0I:(DE-Juel1)IEK-8-20101013$$kIEK-8$$lTroposphäre$$x0
000156248 9801_ $$aFullTexts
000156248 980__ $$ajournal
000156248 980__ $$aVDB
000156248 980__ $$aUNRESTRICTED
000156248 980__ $$aI:(DE-Juel1)IEK-8-20101013
000156248 981__ $$aI:(DE-Juel1)ICE-3-20101013