Arctic
sea ice cover grows each winter as the sun sets for several months, and shrinks each summer as the sun rises higher in the northern sky.
Arctic
sea ice cover grows each autumn and winter, and shrinks each spring and summer.
Arctic
sea ice cover grows each winter as the sun sets for several months, and shrinks each summer as the sun rises higher in the northern sky.
Not exact matches
This study is the latest in a
growing body of research that suggests dwindling
sea ice and snow
cover in the polar regions may be altering the weather over the continents of the Northern Hemisphere.
The area of
sea ice covering the Arctic ocean even stopped growing and started shrinking in the Barents Sea for a brief period in Novemb
sea ice covering the Arctic ocean even stopped
growing and started shrinking in the Barents
Sea for a brief period in Novemb
Sea for a brief period in November.
sea ice covering the Arctic ocean even stopped growing and started shrinking in the Barents Sea for a brief period in Novemb
sea ice covering the Arctic ocean even stopped
growing and started shrinking in the Barents
Sea for a brief period in Novemb
Sea for a brief period in November.
This is perhaps the least newsworthy item for readers here, given how much The Times has
covered the mix of issues arising as summer
sea ice retreats in the Arctic and pressures
grow to exploit new shipping routes and northern resources.
«Higher northern latitudes are getting warmer, Arctic
sea ice and the duration of snow
cover are diminishing, the
growing season is getting longer and plants are
growing more,» said Ranga Myneni of Boston University's Department of Earth and Environment.
A few feet thick,
sea ice covers one million square miles of ocean in summer and
grows to six million square miles in winter, doubling the size of the continent.
For example,
ice cover in the Bellingshausen
Sea has been decreasing while
ice in the nearby Ross
Sea is
growing.
You can't fake spring coming earlier, or trees
growing higher up on mountains, or glaciers retreating for kilometres up valleys, or shrinking
ice cover in the Arctic, or birds changing their migration times, or permafrost melting in Alaska, or the tropics expanding, or
ice shelves on the Antarctic peninsula breaking up, or peak river flow occurring earlier in summer because of earlier snowmelt, or
sea level rising faster and faster, or any of the thousands of similar examples.
The winds within that
ice zone keep the water extremely cold, enabling the
sea ice cover to
grow in recent years even as global temperatures have risen markedly.
At a time when the
sea ice should be growing toward its maximum extent for the year, it's shrinking instead — the area of the Bering Sea covered by ice is now 60 percent below its average from 1981 - 20
sea ice should be
growing toward its maximum extent for the year, it's shrinking instead — the area of the Bering
Sea covered by ice is now 60 percent below its average from 1981 - 20
Sea covered by
ice is now 60 percent below its average from 1981 - 2010.
As examples, a reduced and thinning
ice cover will disadvantage polar bears, while
sea otters will have new habitats; communities on new shipping routes will
grow while those built on permafrost will have difficulties.
In contrast to Arctic
sea ice, the
sea ice cover that surrounds the Antarctic continent has actually
grown slightly since the start of the satellite record.
How much it has
grown is not stated in the paper: «Observational determination of albedo decrease caused by vanishing Arctic
sea ice» http://eisenman.ucsd.edu/publications/Pistone-Eisenman-Ramanathan-2014.pdf but it seems very clear that Arctic
sea -
ice loss is in accelerating decline towards zero in the coming decades, meaning that this forcing will rise very substantially along with those from land -
ice and snow
cover decline.
It also illustrates that the two
ice sheets play an important role in the total contribution to
sea level at present, and that contribution is continuously and rapidly
growing...» 4/2002 -2 / 2009 period
covered for Greenland and Antarctica.
Ignoring the possible increase of «methane from permafrost» with warming for now, it appears that NSIDC data tell us a) that northern hemisphere snow
cover has not shown any statistical change since the 1980s, b) that Arctic
sea ice has shrunk since measurements started in 1979 and c) that Antarctic
sea ice has
grown gradually over this period.