Amundsen Sea circulation controls bottom upwelling and Antarctic Pine Island and Thwaites ice shelf melting
Taewook Park,
Yoshihiro Nakayama,
SungHyun Nam
Abstract:The Pine Island and Thwaites Ice Shelves (PIIS/TIS) in the Amundsen Sea are melting rapidly and impacting global sea levels. The thermocline depth (TD) variability, the interface between cold Winter Water and warm modified Circumpolar Deep Water (mCDW), at the PIIS/TIS front strongly correlates with basal melt rates, but the drivers of its interannual variability remain uncertain. Here, using an ocean model, we propose that the strength of the eastern Amundsen Sea on-shelf circulation primarily controls TD var… Show more
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