CSSP 2022 0616 Talk Modeling Antarctic Ice with Adaptive Mesh Refinement

The response of the Antarctic Ice Sheet (AIS) remains the largest uncertainty in projections of sea-level rise. The AIS (particularly in West Antarctica) is believed to be vulnerable to collapse driven by warm-water incursion under ice shelves, which causes a loss of buttressing, subsequent grounding-line retreat, and large (potentially up to 4m) contributions to sea-level rise. Understanding the response of the Earth's ice sheets to forcing from a changing climate has required the development of a new generation of next-generation ice sheet models which are much more accurate, scalable, and sophisticated than their predecessors. For example very fine (finer than 1km) spatial resolution is needed to resolve ice dynamics around shear margins and grounding lines (the point at which grounded ice begins to float). The LBL-developed BISICLES ice sheet model uses adaptive mesh refinement (AMR) to enable sufficiently-resolved modeling of full-continent Antarctic ice sheet response to climate forcing. Dan Martin discusses recent progress and challenges modeling the sometimes-dramatic response of the ice sheet to climate forcing using AMR.

Видео CSSP 2022 0616 Talk Modeling Antarctic Ice with Adaptive Mesh Refinement канала Computing Sciences at Berkeley Lab