Ice-Sheet and Sea-Level Changes

Future sea-level rise is an important issue related to the continuing buildup of atmospheric greenhouse gas concentrations. The Greenland and Antarctic ice sheets, with the potential to raise sea level [approximately]70 meters if completely melted, dominate uncertainties in projected sea-level chang...

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Veröffentlicht in:	Science (American Association for the Advancement of Science) 2005-10, Vol.310 (5747), p.456-460
Hauptverfasser:	Alley, Richard B, Clark, Peter U, Huybrechts, Philippe, Joughin, Ian
Format:	Artikel
Sprache:	eng
Schlagworte:	Analysis Atmospherics Climate Climate change Earth sciences Earth, ocean, space Engineering and environment geology. Geothermics Exact sciences and technology Feedback (Response) Glacial landforms Glaciers Global warming Greenhouse gases Ice Ice sheets Marine Marine and continental quaternary Melting Ocean circulation Outlet glaciers Pollution, environment geology Review Scientific Concepts Sea level Sea level rise Sea-water Seawater Surficial geology
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Beschreibung
Zusammenfassung:	Future sea-level rise is an important issue related to the continuing buildup of atmospheric greenhouse gas concentrations. The Greenland and Antarctic ice sheets, with the potential to raise sea level [approximately]70 meters if completely melted, dominate uncertainties in projected sea-level change. Freshwater fluxes from these ice sheets also may affect oceanic circulation, contributing to climate change. Observational and modeling advances have reduced many uncertainties related to ice-sheet behavior, but recently detected, rapid ice-marginal changes contributing to sea-level rise may indicate greater ice-sheet sensitivity to warming than previously considered.
ISSN:	0036-8075 1095-9203
DOI:	10.1126/science.1114613