Sentences with phrase «summer sea ice coverage»

They contend polar bears are already being harmed by declines in summer sea ice coverage, or will be shortly.

The Arctic Ocean's end - of - summer sea ice coverage has decreased, on average, more than 13 percent per decade since 1979.

Not exact matches

At summer's end, sea - ice coverage was one - third smaller than the average from 1979 to 2000.

During the so - called Holocene Climate Optimum, from approximately 8000 to 5000 years ago, when the temperatures were somewhat warmer than today, there was significantly less sea ice in the Arctic Ocean, probably less than 50 % of the summer 2007 coverage, which is absolutely lowest on record.

It's also worth noting that the area of sea ice coverage is influenced by the wind, and the rapid area loss of last summer was mainly wind - driven — but thin sea ice is more sensitive to wind forcing than thick sea ice is.

The same sea - ice experts foreseeing a new record retreat of the Arctic Ocean coverage this summer have explanations for the flow between Greenland and Iceland, too.]

Given that this summer's minimum has fallen below last year's and will settle in at the 2nd or 3rd lowest on record, last summer's minimum now appears more as a bump in the road toward continuing lower Arctic sea ice coverage.

The estimates also suggests, based on current sea - ice coverage, that it will take another trillion metric tons of carbon dioxide emissions before Arctic summer sea ice more or less vanishes.

For Antarctica, the lowest maximum extent, recorded on September 12, follows a record low minimum sea ice coverage recorded on March 1 after the summer thaw, he said.

The coupling of IP25 with phytoplankton biomarkers such as brassicasterol or dinosterol proves to be a viable approach to determine (spring / summer) sea ice conditions as is demonstrated by the good alignment of the PIP25 - based estimate of the recent sea ice coverage with satellite observations38.

For both summer and winter Arctic sea - ice, the area coverage is declining at present (with summer sea - ice declining more markedly; ref.

Scientific confidence of the occurrence of climate change include, for example, that over at least the last 50 years there have been increases in the atmospheric concentration of CO2; increased nitrogen and soot (black carbon) deposition; changes in the surface heat and moisture fluxes over land; increases in lower tropospheric and upper ocean temperatures and ocean heat content; the elevation of sea level; and a large decrease in summer Arctic sea ice coverage and a modest increase in Antarctic sea ice coverage.

Is thickening in this area normal or predicted when Arctic sea ice approaches minimal summer coverage?