Shifts in sea ice cover within the Nordic Seas are believed to have amplified the glacial climate variability in northern high latitudes and contributed to abrupt, high-amplitude temperature changes over Greenland. We present unprecedented empirical evidence that resolves the nature, timing, and role ...
Seasonal sea-ice develops along the eastern continental margins in the northern North Atlantic, where freshwater and/or meltwater outflow are responsible for relatively low salinity in surface waters and very pronounced water mass stratification. Sea-ice constitutes a major parameter in the marine ecos...
glaciers and ice sheets, polar sea ice, and snow cover make up 20% of the Earth’s surface environments (Deming and Eicken2007). A great diversity of microorganisms has been found in these habitats. However, only those that are adapted to ...
Sea level may be the trigger that forced near-synchronous breakouts of ice from north America and eastern Greenland. The HP sea level changes also correspond to similar cycles in benthic oxygen isotopes reported from the north Atlantic, which are too large to be explained entirely in terms of ...
Until quite recently, the mass balance (MB) of the great ice sheets of Greenland and Antarctica was poorly known and often treated as a residual in the bud
Sea ice was an active player in millennial climate change, in most cases probably enforcing trends already caused by the predominantly cold, glacial atmospheric conditions during the last glacial period. The peak warmth of the interstadials lasted only shortly1 and was immediately followed by ...
Coinciding with global warming, Arctic sea ice has rapidly decreased during the last four decades and climate scenarios suggest that sea ice may completely disappear during summer within the next about 50–100 years. Here we produce Arctic sea ice biomar
The Earth's cryosphere comprises those regions that are cold enough for water to turn into ice. Recent findings show that the icy realms of polar oceans, glaciers and ice sheets are inhabited by microorganisms of all three domains of life, and that temperatures below 0 degrees C are an integ...
ARTICLE Received 18 Feb 2015 | Accepted 23 Jul 2015 | Published 18 Sep 2015 DOI: 10.1038/ncomms9136 OPEN The seasonal sea-ice zone in the glacial Southern Ocean as a carbon sink Andrea Abelmann1, Rainer Gersonde1, Gregor Knorr1,2, Xu Zhang1, Bernhard Chapligin1, Edith Maier1, Oliver...
Ice volumedelta18OArctic ice shelfLast InterglacialGlacioisostatic adjustmentStudies of past glacial cycles yield critical information about climate and sea-level (ice-volume) variability, including the sensitivity of climate to radiative change, and impacts of crustal rebound on sea-level reconstructions ...