Sentences with phrase «even under sea ice»

The occurrences of lunar migrations happen every winter at all sites, even under sea ice with snow cover on top.»

Not exact matches

If the polar cod population in the Barents Sea actually does shrink, the juvenile fish under the ice of the Eastern Arctic could become even more important — especially in order to make up for losses elsewhere.

A team of scientists is pioneering new strategies for ensuring that polar bears can persist even as summer sea ice — a vital feeding platform — retreats under the climate change that is already in the pipeline no matter how aggressively societies tackle the greenhouse challenge.

But even with that trend, «many scientists» still caution that sea ice could expand again periodically even as the system heads toward mainly open water in summers later this century under the building long - term influence of the greenhouse blanket.

But Mr. Kempthorne stressed that the decision was made under some duress, that oil and gas operations were not harmful to the bears and that the Endangered Species Act listing would not affect policy on greenhouse gases (even though the model shows that a continuing decline in the bears» sea - ice habitat were all driven by rising greenhouse gases).

Whereas most proxy - based reconstructions point to an early - middle LIG climatic optimum with reduced summer sea ice concentrations between 126 and 116 ka, the results of our model simulations only support a pronounced reduction in summer sea ice concentration for the LIG - 125 and LIG - 130 runs (in both time slice as well as transient runs; Figs. 8 and 9), but also indicate that sea ice was still present in the central Arctic Ocean even under climatic conditions significantly warmer than today (Fig. 4).

We document that even under such warmer climate conditions, sea ice existed in the central Arctic Ocean during summer, whereas sea ice was significantly reduced along the Barents Sea continental margin influenced by Atlantic Water inflsea ice existed in the central Arctic Ocean during summer, whereas sea ice was significantly reduced along the Barents Sea continental margin influenced by Atlantic Water inflsea ice was significantly reduced along the Barents Sea continental margin influenced by Atlantic Water inflSea continental margin influenced by Atlantic Water inflow.

Including open - water phytoplankton biomarkers as well as micropaleontological data, we demonstrate (1) that a permanent sea ice cover existed during MIS 6 and (2) that during the LIG sea ice was still present in the central Arctic Ocean during the spring / summer season even under (global) boundary conditions significantly warmer than the present.

And, once the summer season is passed, the ever - colder Arctic air masses remove even more heat from the under - ice water up through the sea ice by conduction into the -25 deg arctic air.

If all the ice on Greenland were to melt, it would raise sea level by 7 meters (23 feet), but even under a high temperature rise scenario, it could take many centuries for it to melt completely.

The break - up of ice shelves can also leave huge ice cliffs 1,000 m high towering over the ocean, which then collapse under their own weight, pushing up sea level even further.

Forecasts of future ice sheet behavior appear even more uncertain: Under the same high — global warming scenario, eight ice sheet models predicted anywhere between 0 and 27 cm of sea level rise in 2100 from Greenland melt.

Even the U.S. Department of the Interior has now proposed that polar bears be listed as threatened under the Endangered Species Act because polar sea ice is melting — an extraordinary admission for an administration philosophically aligned with the skeptics.