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Global Atmospheric OCS Trend Analysis From 22 NDACC Stations

dc.contributor.authorHannigan, J.W.
dc.contributor.authorOrtega, I.
dc.contributor.authorBahramvash Shams, S.
dc.contributor.authorBlumenstock, T.
dc.contributor.authorCampbell, J.E.
dc.contributor.authorConway, S.
dc.contributor.authorFlood, V.
dc.contributor.authorGarcia, O.
dc.contributor.authorGriffith, D.
dc.contributor.authorGrutter, M.
dc.contributor.authorHase, F.
dc.contributor.authorJeseck, P.
dc.contributor.authorJones, N.
dc.contributor.authorMahieu, E.
dc.contributor.authorMakarova, M.
dc.contributor.authorDe Mazière, M.
dc.contributor.authorMorino, I.
dc.contributor.authorMurata, I.
dc.contributor.authorNagahama, T.
dc.contributor.authorNakijima, H.
dc.contributor.authorNotholt, J.
dc.contributor.authorPalm, M.
dc.contributor.authorPoberovskii, A.
dc.contributor.authorRettinger, M.
dc.contributor.authorRobinson, J.
dc.contributor.authorRöhling, A.N.
dc.contributor.authorSchneider, M.
dc.contributor.authorServais, C.
dc.contributor.authorSmale, D.
dc.contributor.authorStremme, W.
dc.contributor.authorStrong, K.
dc.contributor.authorSussmann, R.
dc.contributor.authorTe, Y.
dc.contributor.authorVigouroux, C.
dc.contributor.authorWizenberg, T.
dc.date2022
dc.date.accessioned2022-02-14T09:03:25Z
dc.date.available2022-02-14T09:03:25Z
dc.identifier.urihttps://orfeo.belnet.be/handle/internal/9777
dc.descriptionCarbonyl sulfide (OCS) is a non-hygroscopic trace species in the free troposphere and a large sulfur reservoir maintained by both direct oceanic, geologic, biogenic, and anthropogenic emissions and the oxidation of other sulfur-containing source species. It is the largest source of sulfur transported to the stratosphere during volcanically quiescent periods. Data from 22 ground-based globally dispersed stations are used to derive trends in total and partial column OCS. Middle infrared spectral data are recorded by solar-viewing Fourier transform interferometers that are operated as part of the Network for the Detection of Atmospheric Composition Change between 1986 and 2020. Vertical information in the retrieved profiles provides analysis of discreet altitudinal regions. Trends are found to have well-defined inflection points. In two linear trend time periods ?2002 to 2008 and ?2008 to 2016 tropospheric trends range from ?0.0 to (1.55 ± 0.30%/yr) in contrast to the prior period where all tropospheric trends are negative. Regression analyses show strongest correlation in the free troposphere with anthropogenic emissions. Stratospheric trends in the period ?2008 to 2016 are positive up to (1.93 ± 0.26%/yr) except notably low latitude stations that have negative stratospheric trends. Since ?2016, all stations show a free tropospheric decrease to 2020. Stratospheric OCS is regressed with simultaneously measured N2O to derive a trend accounting for dynamical variability. Stratospheric lifetimes are derived and range from (54.1 ± 9.7)yr in the sub-tropics to (103.4 ± 18.3)yr in Antarctica. These unique long-term measurements provide new and critical constraints on the global OCS budget.
dc.languageeng
dc.titleGlobal Atmospheric OCS Trend Analysis From 22 NDACC Stations
dc.typeArticle
dc.subject.frascatiEarth and related Environmental sciences
dc.audienceScientific
dc.subject.freecarbonyl sulfide
dc.subject.freeremote sensing
dc.subject.freelong term trends
dc.subject.freestratosphere
dc.subject.freetroposphere
dc.source.titleJournal of Geophysical Research: Atmospheres
dc.source.volume127
dc.source.issue4
dc.source.pagee2021JD035764
Orfeo.peerreviewedYes
dc.identifier.doi10.1029/2021JD035764
dc.identifier.scopus


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