Southern Hemisphere Additional Ozonesondes (SHADOZ) ozone climatology (2005–2009): Tropospheric and tropical tropopause layer (TTL) profiles with comparisons to OMI-based ozone products

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dc.contributor.authorThompson, Anne M.
dc.contributor.authorMiller, Sonya K.
dc.contributor.authorTilmes, Simone
dc.contributor.authorKollonige, Debra W.
dc.contributor.authorWitte, Jacquelyn C.
dc.contributor.authorOltmans, Samuel J.
dc.contributor.authorJohnson, Bryan J.
dc.contributor.authorFujiwara, Masatomo
dc.contributor.authorSchmidlin, F. J.
dc.contributor.authorCoetzee, G. J. R.
dc.contributor.authorKomala, Ninong
dc.contributor.authorMaata, Matakite
dc.contributor.authorbt Mohamad, Maznorizan
dc.contributor.authorNguyo, J.
dc.contributor.authorMutai, C.
dc.contributor.authorOgino, S.-Y.
dc.contributor.authorDa Silva, F. Raimundo
dc.contributor.authorLeme, N. M. Paes
dc.contributor.authorPosny, Francoise
dc.contributor.authorScheele, Rinus
dc.contributor.authorSelkirk, Henry B.
dc.contributor.authorShiotani, Masato
dc.contributor.authorStübi, René
dc.contributor.authorLevrat, Gilbert
dc.contributor.authorCalpini, Bertrand
dc.contributor.authorThouret, Valérie
dc.contributor.authorTsuruta, Haruo
dc.contributor.authorCanossa, Jessica Valverde
dc.contributor.authorVömel, Holger
dc.contributor.authorYonemura, S.
dc.contributor.authorDiaz, Jorge Andrés
dc.contributor.authorTan Thanh, Nguyen T.
dc.contributor.authorThuy Ha, Hoang T.
dc.date.accessioned2024-06-20T17:31:36Z
dc.date.available2024-06-20T17:31:36Z
dc.date.issued2012-12-01
dc.description.abstractWe present a regional and seasonal climatology of SHADOZ ozone profiles in the troposphere and tropical tropopause layer (TTL) based on measurements taken during the first five years of Aura, 2005–2009, when new stations joined the network at Hanoi, Vietnam; Hilo, Hawaii; Alajuela/Heredia, Costa Rica; Cotonou, Benin. In all, 15 stations operated during that period. A west-to-east progression of decreasing convective influence and increasing pollution leads to distinct tropospheric ozone profiles in three regions: (1) western Pacific/eastern Indian Ocean; (2) equatorial Americas (San Cristóbal, Alajuela, Paramaribo); (3) Atlantic and Africa. Comparisons in total ozone column from soundings, the Ozone Monitoring Instrument (OMI, on Aura, 2004-) satellite and ground-based instrumentation are presented. Most stations show better agreement with OMI than they did for EP/TOMS comparisons (1998–2004; Earth-Probe/Total Ozone Mapping Spectrometer), partly due to a revised above-burst ozone climatology. Possible station biases in the stratospheric segment of the ozone measurement noted in the first 7 years of SHADOZ ozone profiles are re-examined. High stratospheric bias observed during the TOMS period appears to persist at one station. Comparisons of SHADOZ tropospheric ozone and the daily Trajectory-enhanced Tropospheric Ozone Residual (TTOR) product (based on OMI/MLS) show that the satellite-derived column amount averages 25% low. Correlations between TTOR and the SHADOZ sondes are quite good (typical r²= 0.5–0.8), however, which may account for why some published residual-based OMI products capture tropospheric interannual variability fairly realistically. On the other hand, no clear explanations emerge for why TTOR-sonde discrepancies vary over a wide range at most SHADOZ sites.
dc.description.sponsorshipThis study was performed while A.M.T. wason a Fulbright Scholar grant to South Africa for 8 months in 2010–2011, withextraordinary support and hospitality from Northwest University-Potchefstroom(J. J. Pienaar and his group), the CSIR-Pretoria (V. Sivakumar), the Universityof the Witwatersrand Climatology Research Group (S. J. Piketh) andSHADOZ Co-I G. J. R. Coetzee (South African Weather Service). Helpfulcomments on the manuscript were received from H. G. J. Smit (FZ-Jülich),N. V. Balashov (PSU), J.-L. Baray (Université de la Réunion) and ananonymous reviewer. The Upper Atmosphere Research Program of NASA(special thanks to M. J. Kurylo and K. W. Jucks) and Aura Validation havemade SHADOZ possible (grants NNG05GP22G, NNX09AJ23G, andNNG05G062G). Support from NOAA’s Global Monitoring Divisionand WMO for the intercomparison activities (M. Proffit, L. Barrie, andG. Braathen) are gratefully acknowledged. The authors also thank operators,local agencies and funding organizations in more than a dozen countriesfor their dedication to SHADOZ over the past 15 years.
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2011JD016911
dc.format.extent27 pages
dc.genrejournal articles
dc.identifierdoi:10.13016/m2bpni-zgoy
dc.identifier.citationThompson, Anne M., Sonya K. Miller, Simone Tilmes, Debra W. Kollonige, Jacquelyn C. Witte, Samuel J. Oltmans, Bryan J. Johnson, et al. “Southern Hemisphere Additional Ozonesondes (SHADOZ) Ozone Climatology (2005–2009): Tropospheric and Tropical Tropopause Layer (TTL) Profiles with Comparisons to OMI-Based Ozone Products.” Journal of Geophysical Research: Atmospheres 117, no. D23 (2012). https://doi.org/10.1029/2011JD016911.
dc.identifier.urihttps://doi.org/10.1029/2011JD016911
dc.identifier.urihttp://hdl.handle.net/11603/34675
dc.language.isoen_US
dc.publisherAGU
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC GESTAR II
dc.rightsThis work was written as part of one of the author's official duties as an Employee of the United States Government and is therefore a work of the United States Government. In accordance with 17 U.S.C. 105, no copyright protection is available for such works under U.S. Law.
dc.rightsPublic Domain
dc.rights.urihttps://creativecommons.org/publicdomain/mark/1.0/
dc.subjectozone
dc.subjectozonesondes
dc.subjectconvection
dc.subjectgravity waves
dc.subjecttropical tropopause layer
dc.subjectupper troposphere lower stratosphere
dc.titleSouthern Hemisphere Additional Ozonesondes (SHADOZ) ozone climatology (2005–2009): Tropospheric and tropical tropopause layer (TTL) profiles with comparisons to OMI-based ozone products
dc.typeText
dcterms.creatorhttps://orcid.org/0000-0002-7829-0920

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