Enter Note Done
Go to previous page in this tab
Session
  • Presentation | A33D: Stratospheric Dynamics, Aerosol Processes, and Interactions with the Troposphere I Oral
  • Oral
  • Share Icon
    Map Icon
    Bookmark Icon
  • A33D-01: Hemispheric asymmetry in recent stratospheric age of air changes (invited)
    • Schedule
    Notes
  • Location Icon270
    NOLA CC
    Set Timezone
    •  
    View Map

Generic 'disconnected' Message
Author(s):
Kimberlee Dube, University of Saskatchewan (First Author, Presenting Author)
Susann Tegtmeier, University of Saskatchewan
Felix Ploeger, Forschungszentrum Jülich GmbH
Kaley Walker, University of Toronto


The stratosphere is the middle layer of the atmosphere, and the home of the ozone layer, which protects the Earth from harmful ultraviolet radiation. Recent long-term changes in many stratospheric trace gases, including ozone, have opposite signs in the Southern Hemisphere (SH) compared to the Northern Hemisphere (NH). This is at least partly due to hemispherically asymmetric changes in the transport rate within the stratosphere, but changes in the transport rate are difficult to quantify as it cannot be directly measured. We used satellite observations and model simulations of trace gases to show that since 2004 the transport rate in the NH has been slower than the transport rate in the SH. This is important to consider when evaluating the recovery of the ozone layer.



Scientific Discipline
Neighborhood
Type
Main Session
Discussion