[Eoas-seminar] REMINDER TODAY: Fwd: EOAS Colloquium at 3:30 PM, Friday, Oct. 9

eoas-seminar at lists.fsu.edu eoas-seminar at lists.fsu.edu
Fri Oct 9 09:58:30 EDT 2020

Our next speaker in theEOASColloquiumTODAY at 3:30 pm will be

Dr. Shineng Hu of the Columbia University / Duke University

Global climate impacts of Indian Ocean warming

The tropical Indian Ocean (TIO) has warmed by 1°C since the 1950s, at a 
faster rate than the other tropical oceans. In this talk, I will discuss 
how this warming can affect the Atlantic Ocean via atmospheric and 
oceanic teleconnections. Specifically, by reorganizing the atmospheric 
Walker circulation in the equatorial band, this warming can reduce 
precipitation in the tropical Atlantic, resulting in pronounced surface 
salinity anomalies. On multidecadal timescales, these anomalies are 
advected to northern high latitudes and strengthen the Atlantic 
meridional overturning circulation (AMOC). The resultant AMOC changes 
lead to a stronger hemispheric
asymmetry and a northward shifted intertropical convergence zone (ITCZ). 
On shorter timescales, Indian Ocean warming generates a train of 
atmospheric planetary waves, which reach the subpolar North Atlantic, 
strengthen surface westerly winds there, and cool the underlying ocean 
within a few months to years. This mechanism could potentially explain 
the suppressed warming in the subpolar North Atlantic (known as the 
"warming hole") seen in the observational record. Further, I will 
discuss the implications for past and future climate changes and ocean 
interbasin teleconnections.

Via Zoom:


The informal virtual chat will start at 3:00 PM through the same zoom 
link. Please contact Dr Zhaohua Wu if you would like to meet privately 
with the speaker in that day.

The more detailed zoom meeting information is appended


Zhaohua Wu is inviting you to a scheduled Zoom meeting.

Topic: EOAS Colloquium, Oct. 9
Time: Oct 9, 2020 03:00 PM Eastern Time (US and Canada)

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