Regional and Seasonal Trends in Tropical Ozone from SHADOZ Profiles: Reference for Models and Satellite Products 9 October 2021

Simple item page
dc.contributor.authorThompson, Anne M.
dc.contributor.authorStauffer, Ryan M.
dc.contributor.authorWargan, Krzysztof
dc.contributor.authorWitte, Jacquelyn C.
dc.contributor.authorKollonige, Debra E.
dc.contributor.authorZiemke, Jerald R.
dc.date.accessioned2021-11-11T18:31:13Z
dc.date.available2021-11-11T18:31:13Z
dc.date.issued2021-10-22
dc.description.abstractUnderstanding lowermost stratosphere (LMS) ozone variability is an important topic in the trends and climate assessment communities because of feedbacks among changing temperature, dynamics and ozone. LMS evaluations are usually based on satellite observations. Free tropospheric (FT) ozone assessments typically rely on profiles from commercial aircraft. Ozonesonde measurements constitute an independent dataset encompassing both LMS and FT. We used Southern Hemisphere Additional Ozonesondes (SHADOZ) data (5.8°N to 14°S) from 1998-2019 in the Goddard Multiple Linear Regression model to analyze monthly mean FT and LMS ozone changes across five well-distributed tropical sites. Our findings: (1) both FT (5-15 km) and LMS (15-20 km) ozone trends show marked seasonal variability. (2) All stations exhibit FT ozone increases in February-May (up to 15%/decade) when the frequency of convectively-driven waves have changed. (3) After May, monthly ozone changes are both positive and negative, leading to mean trends of +(1-4)%/decade, depending on station. (4) LMS ozone losses reach (4-9)%/decade mid-year, correlating with an increase in TH as derived from SHADOZ radiosonde data. (5) When the upper FT and LMS are defined by tropopause-relative coordinates, the LMS ozone trends all become insignificant. Thus, the 20-year decline in tropical LMS ozone reported in recent satellite-based studies likely signifies a perturbed tropopause rather than chemical depletion. The SHADOZ-derived ozone changes highlight regional and seasonal variability across the tropics and define a new reference for evaluating changes derived from models and satellite products over the 1998 to 2019 period.en_US
dc.description.sponsorshipSupport is gratefully acknowledged from the NASA Upper Air Research Program (K. W. Jucks, Program Manager), S-NPP and JPSS (J. F. Gleason, Project Scientist) and the NASA Post-doctoral Program to RMS. We are grateful to O. R. Cooper (CIRES/NOAA-CSL) and W. Randel (NCAR) for helpful comments.en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/abs/10.1029/2021JD034691en_US
dc.format.extent2 filesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2kebb-zgri
dc.identifier.citationThompson, Anne M. et al.; Regional and Seasonal Trends in Tropical Ozone from SHADOZ Profiles: Reference for Models and Satellite Products 9 October 2021; Journal of Geophysical Research: Atmospheres, 22 October, 2021; https://doi.org/10.1029/2021JD034691en_US
dc.identifier.urihttps://doi.org/10.1029/2021JD034691
dc.identifier.urihttp://hdl.handle.net/11603/23333
dc.language.isoen_USen_US
dc.publisherAmerican Geophysical Unionen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC Joint Center for Earth Systems Technology
dc.relation.ispartofUMBC Faculty Collection
dc.rightsThis item is likely protected under Title 17 of the U.S. Copyright Law. Unless on a Creative Commons license, for uses protected by Copyright Law, contact the copyright holder or the author.en_US
dc.rights©2018. American Geophysical Union. All Rights Reserved
dc.rightsAccess to this item will begin on 2022-04-22
dc.titleRegional and Seasonal Trends in Tropical Ozone from SHADOZ Profiles: Reference for Models and Satellite Products 9 October 2021en_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0002-7829-0920en_US

Files

Original bundle
Now showing 1 - 2 of 2
Thumbnail Image
Name:
2021JD034691.pdf
Size:
19.77 MB
Format:
Adobe Portable Document Format
Description:
Regional and Seasonal Trends in Tropical Ozone from SHADOZ Profiles: Reference for Models and Satellite Products 9 October 2021
Download
Thumbnail Image
Name:
2021jd034691-sup-0001-supporting information si-s01.pdf
Size:
2.65 MB
Format:
Adobe Portable Document Format
Description:
Supplementary Material
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
2.56 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

UMBC Joint Center for Earth Systems Technology (JCET)
UMBC Faculty Collection