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A trajectory-based estimate of the tropospheric ozone column using the residual method

dc.contributor.authorSchoeberl, M.
dc.contributor.authorZiemke, J.R.
dc.contributor.authorBojokv, B.
dc.contributor.authorLivesey, N.
dc.contributor.authorDuncan, B.
dc.contributor.authorStrahan, S.
dc.contributor.authorFroidevaux, L.
dc.contributor.authorKulawik, S.
dc.contributor.authorBarthia, P.K.
dc.contributor.authorChandra, S.
dc.contributor.authorLevelt, P.F.
dc.contributor.authorWitte, J.C.
dc.contributor.authorThompson, A.M.
dc.contributor.authorCuevas, E.
dc.contributor.authorRedondas, A.
dc.contributor.authorTarasick, D.W.
dc.contributor.authorDavies, J.
dc.contributor.authorBodeker, G.
dc.contributor.authorHansen, G.
dc.contributor.authorJohnson, B.J.
dc.contributor.authorOltmans, S.J.
dc.contributor.authorVömel, H.
dc.contributor.authorAllaart, M.
dc.contributor.authorKelder, H.
dc.contributor.authorNewchurch, M.
dc.contributor.authorGodin-Beekmann, S.
dc.contributor.authorAncellet, G.
dc.contributor.authorClude, H.
dc.contributor.authorAnderson, S.B.
dc.contributor.authorKyrö, E.
dc.contributor.authorParrondos, M.
dc.contributor.authorYela, M.
dc.contributor.authorZablocki, G.
dc.contributor.authorMoore,D.
dc.contributor.authorDier, H.
dc.contributor.authorvon der Gathen, P.
dc.contributor.authorViatte, P.
dc.contributor.authorStübi, R.
dc.contributor.authorCalpini, B.
dc.contributor.authorSkrivankova, P.
dc.contributor.authorDorokhov, V.
dc.contributor.authorDe Backer, H.
dc.contributor.authorSchmidlin, F.J.
dc.contributor.authorCoetzee, G.
dc.contributor.authorFujiwara, M.
dc.contributor.authorThouret, V.
dc.contributor.authorPosny, F.
dc.contributor.authorMorris, G.
dc.contributor.authorMerrill, J.
dc.contributor.authorLeong, C.P.
dc.contributor.authorKoenig-Langlo, G.
dc.contributor.authorJoseph, E.
dc.coverage.temporal21st century
dc.date2007
dc.date.accessioned2016-03-07T16:16:55Z
dc.date.accessioned2021-12-09T09:53:41Z
dc.date.available2016-03-07T16:16:55Z
dc.date.available2021-12-09T09:53:41Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/8722
dc.descriptionWe estimate the tropospheric column ozone using a forward trajectory model to increase the horizontal resolution of the Aura Microwave Limb Sounder (MLS) derived stratospheric column ozone. Subtracting the MLS stratospheric column from Ozone Monitoring Instrument total column measurements gives the trajectory enhanced tropospheric ozone residual (TTOR). Because of different tropopause definitions, we validate the basic residual technique by computing the 200-hPa-to-surface column and comparing it to the same product from ozonesondes and Tropospheric Emission Spectrometer measurements. Comparisons show good agreement in the tropics and reasonable agreement at middle latitudes, but there is a persistent low bias in the TTOR that may be due to a slight high bias in MLS stratospheric column. With the improved stratospheric column resolution, we note a strong correlation of extratropical tropospheric ozone column anomalies with probable troposphere-stratosphere exchange events or folds. The folds can be identified by their colocation with strong horizontal tropopause gradients. TTOR anomalies due to folds may be mistaken for pollution events since folds often occur in the Atlantic and Pacific pollution corridors. We also compare the 200-hPa-to-surface column with Global Modeling Initiative chemical model estimates of the same quantity. While the tropical comparisons are good, we note that chemical model variations in 200-hPa-to-surface column at middle latitudes are much smaller than seen in the TTOR.
dc.languageeng
dc.publisherIRM
dc.publisherKMI
dc.publisherRMI
dc.relation.ispartofseriesJournal of Geophysical Research, vol 112, D24S49
dc.titleA trajectory-based estimate of the tropospheric ozone column using the residual method
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceGeneral Public
dc.audienceScientific
dc.subject.freetropospheric Ozone
dc.subject.freePollution
dc.subject.freeair quality
dc.source.issueJournal of Geophysical Research, vol 112, D24S49
dc.source.pagedoi:10.1029/2007JD008773
Orfeo.peerreviewedNot pertinent


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