New insights on the interannual surface mass balance variability on the South Shetland Islands glaciers, Antarctic Peninsula ...

• Main Authors: Torres, Christian, Bozkurt, Deniz, Bolibar, Jordi, Arigony-Neto, Jorge
• Format: Conference Object
• Language: unknown
• Published: GFZ German Research Centre for Geosciences 2023
• Subjects: Antarctic; Antarctic Peninsula; South Shetland Islands; Pacific; Hurd; Johnsons; Antarc*; Sea ice
• Online Access: https://dx.doi.org/10.57757/iugg23-2750; https://gfzpublic.gfz-potsdam.de/pubman/item/item_5019147

<!--!introduction!--> The South Shetland Islands (SSIs) region, located on the northern Antarctic Peninsula (AP), is influenced by different climatic configurations from regional (five atmospheric circulation patterns, sea ice extent-concentration and surface temperature) to global (Southern Annular Mode-SAM, El Niño-Southern Oscillation-ENSO and deep convection in the central tropical Pacific-CPAC) scales. However, few studies have been developed to assess the influence of these climatic conditions on the surface mass balance (SMB) of glaciers located in the SSIs. To fill this gap, we analyzed correlation between annual SMB, reconstituted with a physical surface energy balance model (COSIPY), and regional-global climate indices from 1970 to 2020. COSIPY was calibrated and validated with 19 years of annual SMB observations from three glaciers (Johnsons, Hurd and Bellinghausen), showing a good ability to capture inter-annual (R² = 71%) variability. Results showed a break in the annual SMB trend ... : The 28th IUGG General Assembly (IUGG2023) (Berlin 2023) ...