CEDAR email: Ruth Lieberman Seminar, Friday, September 13th at 10:30 AM Mountain Time

[harvey]

> NWRA Seminars has invited you to a seminar by Ruth Lieberman.
>
> Title:
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> The role of inertial instability in linking wintertime planetary waves 
> with the polar summer Mesopause.
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> Location:
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> https://nwra.webex.com/nwra
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> When:
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> Friday, September 13, 2019 10:30 AM ( Mountain Time )
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> Organizer:
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> 	NWRA Seminars<seminars at nwra.com>
>
> Description:
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> 	
>
> JOIN WEBEX MEETING
>
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>
> Abstract:
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> 	
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> 	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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