An update on ozone profile trends for the period 2000 to 2016

dc.contributor.authorSteinbrecht, Wolfgang
dc.contributor.authorFroidevaux, Lucien
dc.contributor.authorFuller, Ryan
dc.contributor.authorWang, Ray
dc.contributor.authorAnderson, John
dc.contributor.authorRoth, Chris
dc.contributor.authorBourassa, Adam
dc.contributor.authorDegenstein, Doug
dc.contributor.authorDamadeo, Robert
dc.contributor.authorZawodny, Joe
dc.contributor.authorFrith, Stacey
dc.contributor.authorMcPeters, Richard
dc.contributor.authorBhartia, Pawan
dc.contributor.authorWild, Jeannette
dc.contributor.authorLong, Craig
dc.contributor.authorDavis, Sean
dc.contributor.authorRosenlof, Karen
dc.contributor.authorSofieva, Viktoria
dc.contributor.authorWalker, Kaley
dc.contributor.authorRahpoe, Nabiz
dc.contributor.authorRozanov, Alexei
dc.contributor.authorWeber, Mark
dc.contributor.authorLaeng, Alexandra
dc.contributor.authorvon Clarmann, Thomas
dc.contributor.authorStiller, Gabriele
dc.contributor.authorKramarova, Natalya
dc.contributor.authorGodin-Beekmann, Sophie
dc.contributor.authorLeblanc, Thierry
dc.contributor.authorQuerel, Richard
dc.contributor.authorSwart, Daan
dc.contributor.authorBoyd, Ian
dc.contributor.authorHocke, Klemens
dc.contributor.authorKämpfer, Niklaus
dc.contributor.authorMaillard Barras, Eliane
dc.contributor.authorMoreira, Lorena
dc.contributor.authorNedoluha, Gerald
dc.contributor.authorVigouroux, Corinne
dc.contributor.authorBlumenstock, Thomas
dc.contributor.authorSchneider, Matthias
dc.contributor.authorGarcía, Omaira
dc.contributor.authorJones, Nicholas
dc.contributor.authorMahieu, Emmanuel
dc.contributor.authorSmale, Dan
dc.contributor.authorKotkamp, Michael
dc.contributor.authorRobinson, John
dc.contributor.authorPetropavlovskikh, Irina
dc.contributor.authorHarris, Neil R. P.
dc.contributor.authorHassler, Birgit
dc.contributor.authorHubert, Daan
dc.contributor.authorTummon, Fiona
dc.date.accessioned2017-10-02T15:00:14Z
dc.date.available2017-10-02T15:00:14Z
dc.date.issued2017-09-11
dc.description.abstractOzone profile trends over the period 2000 to 2016 from several merged satellite ozone data sets and from ground-based data measured by four techniques at stations of the Network for the Detection of Atmospheric Composition Change indicate significant ozone increases in the upper stratosphere, between 35 and 48 km altitude (5 and 1 hPa). Near 2 hPa (42 km), ozone has been increasing by about 1.5 % per decade in the tropics (20° S to 20° N), and by 2 to 2.5 % per decade in the 35 to 60° latitude bands of both hemispheres. At levels below 35 km (5 hPa), 2000 to 2016 ozone trends are smaller and not statistically significant. The observed trend profiles are consistent with expectations from chemistry climate model simulations. This study confirms positive trends of upper stratospheric ozone already reported, e.g., in the WMO/UNEP Ozone Assessment 2014 or by Harris et al. (2015). Compared to those studies, three to four additional years of observations, updated and improved data sets with reduced drift, and the fact that nearly all individual data sets indicate ozone increase in the upper stratosphere, all give enhanced confidence. Uncertainties have been reduced, for example for the trend near 2 hPa in the 35 to 60° latitude bands from about ±5 % (2σ) in Harris et al. (2015) to less than ±2 % (2σ). Nevertheless, a thorough analysis of possible drifts and differences between various data sources is still required, as is a detailed attribution of the observed increases to declining ozone-depleting substances and to stratospheric cooling. Ongoing quality observations from multiple independent platforms are key for verifying that recovery of the ozone layer continues as expected.en_UK
dc.identifier.citationSteinbrecht W, Froidevaux L, Fuller R, et al., An update on ozone profile trends for the period 2000 to 2016. Atmospheric Chemistry and Physics, Volume 17, Issue 17, September 2017, pp. 10675-10690en_UK
dc.identifier.issn1680-7316
dc.identifier.urihttp://dx.doi.org/10.5194/acp-17-10675-2017
dc.identifier.urihttp://dspace.lib.cranfield.ac.uk/handle/1826/12576
dc.language.isoenen_UK
dc.publisherEuropean Geosciences Union (EGU) / Copernicus Publicationsen_UK
dc.rightsAttribution 3.0 Unported
dc.rights.urihttps://creativecommons.org/licenses/by/3.0/
dc.titleAn update on ozone profile trends for the period 2000 to 2016en_UK
dc.typeArticleen_UK

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