000032542 001__ 32542
000032542 005__ 20240712101047.0
000032542 0247_ $$2DOI$$a10.1029/2002JD002208
000032542 0247_ $$2WOS$$aWOS:000181937100004
000032542 0247_ $$2ISSN$$a0141-8637
000032542 0247_ $$2Handle$$a2128/20865
000032542 037__ $$aPreJuSER-32542
000032542 041__ $$aeng
000032542 082__ $$a550
000032542 084__ $$2WoS$$aMeteorology & Atmospheric Sciences
000032542 1001_ $$0P:(DE-HGF)0$$aFried, A.$$b0
000032542 245__ $$aTunable diode laser measurements of formaldehyde during the TOPSE 2000 study: Distributions, trends, and model comparisons
000032542 260__ $$aWashington, DC$$bUnion$$c2003
000032542 300__ $$aTOP 13-1 - TOP 13-2
000032542 3367_ $$0PUB:(DE-HGF)16$$2PUB:(DE-HGF)$$aJournal Article
000032542 3367_ $$2DataCite$$aOutput Types/Journal article
000032542 3367_ $$00$$2EndNote$$aJournal Article
000032542 3367_ $$2BibTeX$$aARTICLE
000032542 3367_ $$2ORCID$$aJOURNAL_ARTICLE
000032542 3367_ $$2DRIVER$$aarticle
000032542 440_0 $$06393$$aJournal of Geophysical Research D: Atmospheres$$v108$$x0148-0227$$yD4
000032542 500__ $$aRecord converted from VDB: 12.11.2012
000032542 520__ $$a[1] Airborne measurements of formaldehyde (CH2O) were acquired employing tunable diode laser absorption spectroscopy (TDLAS) during the 2000 Tropospheric Ozone Production About the Spring Equinox (TOPSE) study. This study consisted of seven deployments spanning the time period from 4 February to 23 May 2000 and covered a wide latitudinal band from 40degreesN to 85degreesN. The median measured CH2O concentrations, with a few exceptions, did not show any clear temporal trends from February to May in each of five altitude and three latitude bins examined. Detailed measurement-model comparisons were carried out using a variety of approaches employing two different steady state models. Because recent emissions of CH2O and/or its precursors often result in model underpredictions, background conditions were identified using a number of chemical tracers. For background conditions at temperatures warmer than -45degreesC, the measurement-model agreement on average ranged between -13% and +5% (measurement-model/measurement), which corresponded to mean and median (measurement-model) differences of 3 +/- 69 and -6 parts per trillion by volume (pptv), respectively. At very low temperatures starting at around -45degreesC, significant and persistent (measurement-model) differences were observed from February to early April from southern Canada to the Arctic Ocean in the 6-8 km altitude range. In such cases, measured CH2O was as much as 392 pptv higher than modeled, and the median difference was 132 pptv (83%). Low light conditions as well as cold temperatures may be important in this effect. A number of possible mechanisms involving the reaction of CH3O2 with HO2 to produce CH2O directly were investigated, but in each case the discrepancy was only minimally reduced. Other possibilities were also considered but in each case there was no compelling evidence to support any of the hypotheses. Whatever the cause, the elevated CH2O concentrations significantly impact upper tropospheric HOx levels at high latitudes (>57degreesN) in the February-April time frame.
000032542 536__ $$0G:(DE-Juel1)FUEK257$$2G:(DE-HGF)$$aChemie und Dynamik der Geo-Biosphäre$$cU01$$x0
000032542 588__ $$aDataset connected to Web of Science
000032542 65320 $$2Author$$aairborne formaldehyde measurements
000032542 65320 $$2Author$$atunable diode laser measurements
000032542 65320 $$2Author$$aformaldehyde measurements at high latitudes
000032542 65320 $$2Author$$aformaldehyde during TOPSE
000032542 650_7 $$2WoSType$$aJ
000032542 7001_ $$0P:(DE-HGF)0$$aWang, Y.$$b1
000032542 7001_ $$0P:(DE-HGF)0$$aCantrell, C.$$b2
000032542 7001_ $$0P:(DE-HGF)0$$aWert, B.$$b3
000032542 7001_ $$0P:(DE-HGF)0$$aWalega, J.$$b4
000032542 7001_ $$0P:(DE-HGF)0$$aRidley, B.$$b5
000032542 7001_ $$0P:(DE-HGF)0$$aAtlas, E.$$b6
000032542 7001_ $$0P:(DE-HGF)0$$aShetter, R.$$b7
000032542 7001_ $$0P:(DE-HGF)0$$aLefer, B.$$b8
000032542 7001_ $$0P:(DE-HGF)0$$aCoffey, M. T.$$b9
000032542 7001_ $$0P:(DE-HGF)0$$aHannigan, J.$$b10
000032542 7001_ $$0P:(DE-HGF)0$$aBlake, D.$$b11
000032542 7001_ $$0P:(DE-HGF)0$$aBlake, N.$$b12
000032542 7001_ $$0P:(DE-HGF)0$$aMeinardi, S.$$b13
000032542 7001_ $$0P:(DE-HGF)0$$aTalbot, B.$$b14
000032542 7001_ $$0P:(DE-HGF)0$$aDibb, J.$$b15
000032542 7001_ $$0P:(DE-HGF)0$$aScheuer, E.$$b16
000032542 7001_ $$0P:(DE-HGF)0$$aWingenter, O.$$b17
000032542 7001_ $$0P:(DE-HGF)0$$aSnow, J.$$b18
000032542 7001_ $$0P:(DE-HGF)0$$aHeikes, B.$$b19
000032542 7001_ $$0P:(DE-Juel1)3735$$aEhhalt, D.H.$$b20$$uFZJ
000032542 773__ $$0PERI:(DE-600)2016800-7 $$a10.1029/2002JD002208$$gVol. 108, p. TOP 13-1 - TOP 13-2$$pTOP 13-1 - TOP 13-2$$q108<TOP 13-1 - TOP 13-2$$tJournal of geophysical research / Atmospheres  $$tJournal of Geophysical Research$$v108$$x0148-0227$$y2003
000032542 8567_ $$uhttp://dx.doi.org/10.1029/2002JD002208
000032542 8564_ $$uhttps://juser.fz-juelich.de/record/32542/files/2002JD002208.pdf$$yOpenAccess
000032542 8564_ $$uhttps://juser.fz-juelich.de/record/32542/files/2002JD002208.pdf?subformat=pdfa$$xpdfa$$yOpenAccess
000032542 909CO $$ooai:juser.fz-juelich.de:32542$$pdnbdelivery$$pdriver$$pVDB$$popen_access$$popenaire
000032542 9141_ $$y2003
000032542 915__ $$0StatID:(DE-HGF)0150$$2StatID$$aDBCoverage$$bWeb of Science Core Collection
000032542 915__ $$0StatID:(DE-HGF)0100$$2StatID$$aJCR
000032542 915__ $$0StatID:(DE-HGF)0111$$2StatID$$aWoS$$bScience Citation Index Expanded
000032542 915__ $$0StatID:(DE-HGF)0510$$2StatID$$aOpenAccess
000032542 915__ $$0StatID:(DE-HGF)0010$$2StatID$$aJCR/ISI refereed
000032542 915__ $$0StatID:(DE-HGF)0030$$2StatID$$aPeer review
000032542 915__ $$0StatID:(DE-HGF)0199$$2StatID$$aDBCoverage$$bThomson Reuters Master Journal List
000032542 9131_ $$0G:(DE-Juel1)FUEK257$$bEnvironment (Umwelt)$$kU01$$lChemie und Dynamik der Geo-Biosphäre$$vChemie und Dynamik der Geo-Biosphäre$$x0
000032542 9201_ $$0I:(DE-Juel1)VDB48$$d31.12.2006$$gICG$$kICG-II$$lTroposphäre$$x0
000032542 970__ $$aVDB:(DE-Juel1)35329
000032542 9801_ $$aFullTexts
000032542 980__ $$aVDB
000032542 980__ $$aConvertedRecord
000032542 980__ $$ajournal
000032542 980__ $$aI:(DE-Juel1)IEK-8-20101013
000032542 980__ $$aUNRESTRICTED
000032542 981__ $$aI:(DE-Juel1)ICE-3-20101013
000032542 981__ $$aI:(DE-Juel1)IEK-8-20101013