Sensitivity of the Southern Ocean to enhanced regional Antarctic ice sheet meltwater input
نویسندگان
چکیده
منابع مشابه
Antarctic Ice Sheet fertilises the Southern Ocean
Southern Ocean (SO) marine primary productivity (PP) is strongly influenced by the availability of iron in surface waters, which is thought to exert a significant control upon atmospheric CO2 concentrations on glacial/interglacial timescales. The zone bordering the Antarctic Ice Sheet exhibits high PP and seasonal plankton blooms in response to light and variations in iron availability. The sou...
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We present a reference, comprehensive, high-resolution, digital mosaic of ice motion in Antarctica assembled from multiple satellite interferometric synthetic-aperture radar data acquired during the International Polar Year 2007 to 2009. The data reveal widespread, patterned, enhanced flow with tributary glaciers reaching hundreds to thousands of kilometers inland over the entire continent. Thi...
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[1] Satellite radar measurements show that ice shelves in Pine Island Bay have thinned by up to 5.5 m yr 1 over the past decade. The pattern of shelf thinning mirrors that of their grounded tributaries the Pine Island, Thwaites and Smith glaciers and ocean currents on average 0.5 C warmer than freezing appear to be the source. The synchronised imbalance of the inland glaciers is the result of r...
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The Greenland ice sheet has become one of the main contributors to global sea level rise, predominantly through increased meltwater runoff. The main drivers of Greenland ice sheet runoff, however, remain poorly understood. Here we show that clouds enhance meltwater runoff by about one-third relative to clear skies, using a unique combination of active satellite observations, climate model data ...
متن کاملGreenland ice sheet motion insensitive to exceptional meltwater forcing.
Changes to the dynamics of the Greenland ice sheet can be forced by various mechanisms including surface-melt-induced ice acceleration and oceanic forcing of marine-terminating glaciers. We use observations of ice motion to examine the surface melt-induced dynamic response of a land-terminating outlet glacier in southwest Greenland to the exceptional melting observed in 2012. During summer, mel...
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ژورنال
عنوان ژورنال: Earth's Future
سال: 2015
ISSN: 2328-4277,2328-4277
DOI: 10.1002/2015ef000306