Evidence of rising and poleward shift of storm surge in western North Pacific in recent decades

 

Seminar
Evidence of rising and poleward shift of storm surge in western North Pacific in recent decades

Speaker:

Prof. Leo OEY, Department of Oceanography, National Sun Yat-sen University

Abstract

Recently, there has been considerable interest in examining how sea-level extremes due to storm surge may be related to climate change. Evidence of how storm-surge extremes have evolved since the start of the most recent warming of mid-1970s to early 1980s has not been firmly established however. Here we use 64 years (1950-2013) of observations and model simulations, and find evidence of a significant rise in the intensity as well as poleward-shifting of location of typhoon surges in the western North Pacific after 1980s. The rising and poleward-shifting trends are caused by the weakening of the steering flow in the tropics, which is related to climate warming, resulting in slower-moving and longer-lasting typhoons which had shifted northward.

 

Date : 29 July 2016 (Friday)
Time : 3:30pm
Venue : Room 4472 (Lifts 25-26)

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