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MLT cooling during stratospheric warming events

Geophysical research letters, 2004-05, Vol.31 (10), p.L10104-n/a [Peer Reviewed Journal]

2008 American Geophysical Union ;Copyright 2004 by the American Geophysical Union. ;ISSN: 0094-8276 ;EISSN: 1944-8007 ;DOI: 10.1029/2004GL019552

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  • Title:
    MLT cooling during stratospheric warming events
  • Author: Cho, Y.-M. ; Shepherd, G. G. ; Won, Y.-I. ; Sargoytchev, S. ; Brown, S. ; Solheim, B.
  • Subjects: Airglow and aurora ; Atmospheric Composition and Structure ; Global Change ; Instruments and techniques ; Middle atmosphere—constituent transport and chemistry ; Middle atmosphere—energy deposition ; Pressure, density, and temperature
  • Is Part Of: Geophysical research letters, 2004-05, Vol.31 (10), p.L10104-n/a
  • Description: MLT (Mesosphere and Lower Thermosphere) airglow emission rates and temperatures have been monitored with a Spectral Airglow Temperature Imager (SATI), operated at Resolute Bay (74.68°N, 94.90°W). The 2001/2002 winter season data exhibits a major cooling event for both the O2 and OH emissions near the end of December, a mild event in mid February and a final cooling in early March. These temperature perturbations are compared with the UKMO stratospheric assimilated data for the Resolute Bay location and for zonally averaged data at 75°N, at two pressure levels, 3.16 hPa and 0.316 hPa. For the major event the 3.16 hPa zonally averaged temperature coincides in time with the MLT cooling. The O2 temperatures increase slightly, prior to the stratospheric warming, but after onset both emissions exhibit cooling; this is consistent with the TIME‐GCM/CCM3 predictions for the meridional circulation at high latitudes.
  • Publisher: American Geophysical Union
  • Language: English
  • Identifier: ISSN: 0094-8276
    EISSN: 1944-8007
    DOI: 10.1029/2004GL019552
  • Source: Wiley Blackwell AGU Digital Archive
    Alma/SFX Local Collection
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