CEDAR email: Ruth Lieberman Seminar, Friday, September 13th at 10:30 AM Mountain Time
harvey
lynn.harvey at lasp.colorado.edu
Fri Sep 6 11:10:02 MDT 2019
> NWRA Seminars has invited you to a seminar by Ruth Lieberman.
>
> Title:
>
>
>
> The role of inertial instability in linking wintertime planetary waves
> with the polar summer Mesopause.
>
> Location:
>
>
>
> https://nwra.webex.com/nwra
>
> When:
>
>
>
> Friday, September 13, 2019 10:30 AM ( Mountain Time )
>
> Organizer:
>
>
>
> NWRA Seminars<seminars at nwra.com>
>
> Description:
>
>
>
> JOIN WEBEX MEETING
>
> https://nwra.webex.com/nwra/j.php?MTID=m447ee55fbbc407d45704d543c6879323Meeting
> number (access code): 626 570 970 Meeting password: RuthL JOIN BY
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> (mobile phones only, hosts not
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>
> Abstract:
>
>
>
> Recent studies have shown a link between warming of the winter
> stratosphere, and the reduction of polar mesospheric cloud (PMC)
> occurrence in the summer hemisphere. Many studies have investigated
> the role of gravity waves in facilitating this so-called
> interhemispheric connection. Here, we focus on the role of
> planetary-scale agents. The 2-day wave is a strong-amplitude planetary
> wave in the summer mesosphere, that can warm the region sufficiently
> to reduce PMCs. Limpasuvan et al. (2000) demonstrated theoretically
> that the 2-day wave is connected to the wintertime stratosphere
> through the phenomenon of low-latitude inertial instability. We
> present, for the first time, observation-driven diagnostics and
> modeling results that support an interhemispheric coupling mechanism
> facilitated by inertial instability.
>
>
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