Aura Microwave Limb Sounder observations of the polar middle atmosphere: Dynamics and transport of CO and H₂O

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dc.contributor.authorLee, Jae N.
dc.contributor.authorWu, Dong L.
dc.contributor.authorManney, Gloria L.
dc.contributor.authorSchwartz, Michael J.
dc.contributor.authorLambert, Alyn
dc.contributor.authorLivesey, Nathaniel J.
dc.contributor.authorMinschwaner, Kenneth R.
dc.contributor.authorPumphrey, Hugh C.
dc.contributor.authorRead, William G.
dc.date.accessioned2023-07-11T21:55:34Z
dc.date.available2023-07-11T21:55:34Z
dc.date.issued2011-03-08
dc.description.abstractThe vertical structure and evolution of the wintertime annular modes are studied using 6 years of geopotential height, carbon monoxide (CO), and water vapor (H₂O) data from Aura Microwave Limb Sounder. The Northern Hemisphere annular mode (NAM) and the Southern Hemisphere annular mode (SAM) reveal a strong coupling of the dynamics in the stratosphere and mesosphere between 316 hPa (∼9 km) and 0.002 hPa (∼90 km). CO is a good tracer throughout the middle atmosphere, while variable vertical gradients of H₂O limit the regions where it is useful as a dynamical tracer. The maximum of the CO NAM and SAM (CNAM and CSAM) indices is used to monitor and characterize the evolution of wintertime polar dynamics as a function of time and height. The CNAM analysis reveals reformation of a stronger mesospheric polar vortex after significant stratospheric sudden warmings in 2006, 2009, and 2010. There is a significant anticorrelation between the mesospheric and stratospheric CNAM indices during 2005–2010 winters, supporting the hypothesis of mesosphere-stratosphere coupling through planetary-gravity wave interactions.en_US
dc.description.sponsorshipWe thank the MLS science team for their support. We also thank Varat Limpasuvan, Hanli Liu, Kunihiro Kodera, Alexander Ruzmaikin, and Joan Feynman for inspiring discussions. We would also like to acknowledge three anonymous reviewers who helped significantly improve the paper and whose comments we have adapted in the discussion. This research was supported by an appointment to the NASA Postdoctoral Program at the Jet Propulsion Laboratory, administered by Oak Ridge Associated Universities through a contract with NASA. The work at the Jet Propulsion Laboratory, California Institute of Technology, was conducted under contract with the National Aeronautics and Space Administration.en_US
dc.description.urihttps://agupubs.onlinelibrary.wiley.com/doi/full/10.1029/2010JD014608en_US
dc.format.extent18 pagesen_US
dc.genrejournal articlesen_US
dc.identifierdoi:10.13016/m2dizi-yicg
dc.identifier.citationLee, J. N., Wu, D. L., Manney, G. L., Schwartz, M. J., Lambert, A., Livesey, N. J., Minschwaner, K. R., Pumphrey, H. C., and Read, W. G. (2011), Aura Microwave Limb Sounder observations of the polar middle atmosphere: Dynamics and transport of CO and H₂O, J. Geophys. Res., 116, D05110, doi:10.1029/2010JD014608.en_US
dc.identifier.urihttps://doi.org/10.1029/2010JD014608
dc.identifier.urihttp://hdl.handle.net/11603/28622
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.rights©2018. American Geophysical Union. All Rights Reserveden_US
dc.titleAura Microwave Limb Sounder observations of the polar middle atmosphere: Dynamics and transport of CO and H₂Oen_US
dc.typeTexten_US
dcterms.creatorhttps://orcid.org/0000-0001-9814-9855en_US

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