Faster Tropical Upper Stratospheric Upwelling Drives Changes in Ozone Chemistry

Simple item page
dc.contributor.authorStrahan, Susan
dc.contributor.authorCoy, Lawrence
dc.contributor.authorDouglass, Anne R.
dc.contributor.authorDamon, Megan R.
dc.date.accessioned2022-11-22T20:46:21Z
dc.date.available2022-11-22T20:46:21Z
dc.date.issued2022-10-25
dc.description.abstractTropospheric trends in long-lived source gases N2O and the chlorofluorocarbons cause trends in O3 through changes in their reactive product gases. Transport affects the product gases because it controls the distribution of the long-lived source gases. We find that large changes in tropical upwelling 10–5 hPa since 2012 have strengthened the northern branch of the upper stratospheric (UpS) transport circulation, dramatically altering the abundances of N2O and its odd nitrogen product gases, NOx and HNO3. Increased upwelling is connected to stronger and more frequent Quasi-Biennial Oscillation easterly winds at 10 hPa and above. We use simulations with and without time varying MERRA2 meteorology to quantify the impact of dynamical changes on O3 loss via the NOx and ClOx cycles. We find that dynamical impacts on these cycles explain the mid-stratospheric tropical O3 increase and Arctic UpS O3 decrease since 2005.en_US
dc.description.sponsorshipThe authors thank Luke Oman (NASA GSFC) for calculating the MERRA2 residual vertical and meridional velocities. SES acknowledges research support from the NASA Atmospheric Chemistry Modeling and Analysis Program Grant 80NSSC19K1005 and thanks the NASA Modeling Analysis and Prediction program for model support. Resources supporting this work were provided by the NASA High-End Computing (HEC) Program through the NASA Advanced Supercomputing (NAS) Division at the Ames Research Center and the NASA Center for Climate Simulation (NCCS) at the Goddard Space Flight Center.en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2022GL101075en_US
dc.format.extent10 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2ypgs-wqq0
dc.identifier.citationStrahan, S. E., Coy, L., Douglass, A. R., & Damon, M. R. (2022). Faster tropical upper stratospheric upwelling drives changes in ozone chemistry. Geophysical Research Letters, 49, e2022GL101075. https://doi.org/10.1029/2022GL101075en_US
dc.identifier.urihttps://doi.org/10.1029/2022GL101075
dc.identifier.urihttp://hdl.handle.net/11603/26350
dc.language.isoen_USen_US
dc.publisherAGUen_US
dc.relation.isAvailableAtThe University of Maryland, Baltimore County (UMBC)
dc.relation.ispartofUMBC GESTAR II Collection
dc.relation.ispartofUMBC Faculty Collection
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.en_US
dc.rightsPublic Domain Mark 1.0*
dc.rights.urihttp://creativecommons.org/publicdomain/mark/1.0/*
dc.titleFaster Tropical Upper Stratospheric Upwelling Drives Changes in Ozone Chemistryen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0002-7511-4577en_US

Files

Original bundle
Now showing 1 - 2 of 2
Thumbnail Image
Name:
Geophysical Research Letters - 2022 - Strahan - Faster Tropical Upper Stratospheric Upwelling Drives Changes in Ozone.pdf
Size:
829 KB
Format:
Adobe Portable Document Format
Description:
Download
Thumbnail Image
Name:
2022gl101075-sup-0001-supporting information si-s01.pdf
Size:
520.82 KB
Format:
Adobe Portable Document Format
Description:
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 GESTAR II
UMBC Faculty Collection