Sentences with phrase «whether polar seas»

Not exact matches

U.S. District Court Judge Claudia Wilken in Oakland, Calif., on April 29 ordered the Bush administration to stop dragging its feet on the fate of polar bears and decide by May 15 whether declining sea ice in the Arctic threatens their existence.

For example, few data are available for the polar winter, and it is not known whether aragonite - undersaturated areas decrease in size with the seasonal freezing of sea ice.

Determining whether polar ice sheets are shrinking or growing, and what their contribution to changes in sea level is, has motivated polar scientists for decades.

Second, the debates among climatologists nowadays are not over whether there is human - exacerbated climate change — melting polar ice, rise in sea level, more tropical storms, etc. — but over how large the effects are (one or four degrees), and what the specific consequences for each spot on the globe will be.

They used all the scientific papers they could find that investigated both polar bears and sea ice, which added up to 92, and scored their positions on sea ice extent and whether it is decreasing significantly and the threat of extinction versus adaptability of polar bears.

I'm not sure whether this is off topic, but I have read in other threads that there is less cold water plunging to the ocean floor around Antarctica (and presumably the Arctic too) due to the sea water becoming less saline due to increased precipitation and melting polar ice.

The paper questioned whether climate change was dangerous for polar bears and whether the region was warming at all, even as NASA reported that the 2007 minimum sea ice levels were at an all - time low, falling to nearly 40 percent below the 1979 - 2000 average.