Impact of IPO and AMO on Surface Mass Balance Trend in West Antarctica during 1980-2010 ...

• Main Author: Man, Kai
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Amundsen Sea; Pacific; West Antarctica; Antarc*; Antarctica; Ice Sheet; Ice Shelf; North Atlantic; Sea ice
• Online Access: https://dx.doi.org/10.57757/iugg23-1478; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5017120

<!--!introduction!--> Surface mass balance (SMB) is an essential component of ice sheet mass balance. But its impacts on sea level rise during the past decades are uncertain, primarily due to the spatial heterogeneity of net precipitation, especially in West Antarctica. Meanwhile, Pacific SST and Atlantic SST have experienced long-term changes over the past decades. In the Pacific Ocean, the Interdecadal Pacific Oscillation (IPO) turns to a negative phase in the late 1990s, while in the North Atlantic Ocean, SST has been widely increasing until today. An increasing number of studies demonstrate how these changes affect surface temperature, sea ice, and ice shelf in West Antarctica through their impacts on Amundsen Sea Low (ASL). Here, we highlight that the decadal trend of Pacific and Atlantic SST significantly contribute to the long-term change in West Antarctica during 1980-2010. SMB observation from ice cores is compared with the net precipitation from the fifth generation of European Centre for ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...