Solar Cycle Modulation of Nighttime Ozone Nearthe Mesopause as Observed by MLS

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dc.contributor.authorLee, Jae
dc.contributor.authorWu, Dong
dc.date.accessioned2022-03-09T15:28:15Z
dc.date.available2022-03-09T15:28:15Z
dc.date.issued2020-03-20
dc.description.abstractEleven-year solar cycle variations of nighttime ozone near the secondary ozone maximum layer in the mesosphere are analyzed with Aura Microwave Limb Sounder (MLS) observations since 2004, fully covering solar cycle 24. Produced primarily from the recombination of molecular oxygen (O₂) with atomic oxygen (O) transported from the lower thermosphere, the mesospheric nighttime ozone concentration is proportional to atomic oxygen density [O], which itself is modulated by ultraviolet (UV) solar cycle variations. MLS nighttime ozone data and UV data at 240 nm from Solar Radiation and Climate Experiment (SORCE) Solar-Stellar Irradiance Comparison Experiment (SOLSTICE) show a positive correlation over the solar cycle. Nighttime O₃ and nighttime carbon monoxide (CO) distributions are highly correlated with each other with similar seasonal and solar cycle variations, because both [O₃] and [CO] depend strongly on UV photolysis and are modulated by Eddy diffusion in this region. Nighttime ozone correlates strongly with temperature, with a generally positive correlation, except at high latitudes during boreal winter.en_US
dc.description.sponsorshipWe thank two anonymous reviewers for valuable comments and suggestions which greatly helped to improve the manuscript. We thank J. Yue and M. Mlynczak for discussions on SABER, N. Livesey and L. Froidevaux on MLS ozone data, and M. Snow and J. Harder on solar spectral irradiances. We also acknowledge the MLS (https://disc.gsfc.nasa.gov/datasets?page=1&keywords=AURA%20MLS) and SORCE (http://lasp.colorado.edu/lisird/data/mission_data) data. This work is supported by NASA's Sun-Climate research at Goddard Space Flight Center.en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2019EA001063en_US
dc.format.extent16 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2g31k-stit
dc.identifier.citationLee, J. N., & Wu, D. L. (2020). Solar cycle modulation of nighttime ozone near the mesopause as observed by MLS. Earth and Space Science, 7. https://doi.org/10.1029/2019EA001063en_US
dc.identifier.urihttps://doi.org/10.1029/2019EA001063
dc.identifier.urihttp://hdl.handle.net/11603/24377
dc.language.isoen_USen_US
dc.publisherAGUen_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.rightsAttribution 4.0 International (CC BY 4.0)*
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/*
dc.titleSolar Cycle Modulation of Nighttime Ozone Nearthe Mesopause as Observed by MLSen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-9814-9855en_US
dcterms.creatorhttps://orcid.org/0000-0002-3490-9437en_US

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