Numerical experiments examining the response of onshore oceanic heat supply to yearly changes in the Amundsen Sea icescape (Antarctica) ...

• Main Authors: St-Laurent, Pierre, Stammerjohn, Sharon, Ted, Maksym
• Format: Dataset
• Language: unknown
• Published: SEANOE 2024
• Subjects: Antarctica; Amundsen Sea; Ice shelves; Oceanography; FOS Earth and related environmental sciences; Cryosphere; Modeling; ROMS; Thwaites Glacier; Thwaites Glacier Tongue; Antarc*; Ice Shelf; Ice Shelves; Pine Island; Sea ice
• Online Access: https://dx.doi.org/10.17882/99231; https://www.seanoe.org/data/00880/99231/

Satellite images from Antarctica reveal important changes in the coastal icescape (fast-ice, icebergs and ice shelves) but these yearly changes and their impacts on the coastal circulation and ice shelf basal melt rates are not represented in the Earth System Models used to project future sea level rise. The impacts of these yearly icescape changes are thus investigated using a high-resolution regional ocean-ice shelves-sea ice coupled model of the Amundsen Sea (Antarctica). A set of nine semi-idealized experiments were designed to highlight the impacts of (a) the collapse of the Thwaites Glacier Tongue, (b) the disappearance of the Bear Ridge Iceberg Chain and tabular iceberg B22, and (c) presence/absence of a fast-ice cover between Thwaites and Pine Island ice shelves, in both cold and warm background hydrological conditions. The dataset features the results of the nine experiments and reveals changes in sea ice concentrations, coastal oceanic circulation and oceanic heat supply to the ice shelf cavities, ...