Insights into spatial sensitivities of ice mass response to environmental change from the SeaRISE ice sheet modeling project I: Antarctica

• Nowicki, Sophie

• Bindschadler, Robert A.

• Abe-Ouchi, Ayako

• Aschwanden, Andy

• Bueler, Ed

• Choi, Hyeungu

• Fastook, Jim

• Granzow, Glen

• Greve, Ralf

• Gutowski, Gail

• Herzfeld, Ute

• Jackson, Charles

• Johnson, Jesse

• Khroulev, Constantine

• Larour, Eric

• Levermann, Anders

• Lipscomb, William H.

• Martin, Maria A.

• Morlighem, Mathieu

• Parizek, Byron R.

• Pollard, David

• Price, Stephen F.

• Ren, Diandong

• Rignot, Eric

• Saito, Fuyuki

• Sato, Tatsuru

• Seddik, Hakime

• Seroussi, Helene

• Takahashi, Kunio

• Walker, Ryan

• Wang, Wei Li

抄録

[1] Atmospheric, oceanic, and subglacial forcing scenarios from the Sea-level Response to Ice Sheet Evolution (SeaRISE) project are applied to six three-dimensional thermomechanical ice-sheet models to assess Antarctic ice sheet sensitivity over a 500 year timescale and to inform future modeling and field studies. Results indicate (i) growth with warming, except within low-latitude basins (where inland thickening is outpaced by marginal thinning); (ii) mass loss with enhanced sliding (with basins dominated by high driving stresses affected more than basins with low-surface-slope streaming ice); and (iii) mass loss with enhanced ice shelf melting (with changes in West Antarctica dominating the signal due to its marine setting and extensive ice shelves; cf. minimal impact in the Terre Adelie, George V, Oates, and Victoria Land region of East Antarctica). Ice loss due to dynamic changes associated with enhanced sliding and/or sub-shelf melting exceeds the gain due to increased precipitation. Furthermore, differences in results between and within basins as well as the controlling impact of sub-shelf melting on ice dynamics highlight the need for improved understanding of basal conditions, grounding-zone processes, ocean-ice interactions, and the numerical representation of all three.

収録刊行物

• Journal of Geophysical Research: Earth Surface

  Journal of Geophysical Research: Earth Surface 118 (2), 1002-1024, 2013-06-12

  American Geophysical Union

詳細情報

• CRID: 1050001339018167552
• NII論文ID: 120005606037
• HANDLE: 2115/59029
• ISSN: 21699003
• 本文言語コード: en
• 資料種別: journal article
• データソース種別:
  • IRDB
  • CiNii Articles