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

[eoas-seminar at lists.fsu.edu]

Our next speaker in the EOAS Colloquium this Friday, Oct. 9 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:


https://fsu.zoom.us/j/92556866443?pwd=bTFlc1Rnc0QrUG84UFlvN1MxdzdlUT09



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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