Not exact matches
A new study shows that the magnitude of surface darkening in the Arctic (due to the
retreat of
sea ice) is twice as
large as that found in previous studies.
The
retreat of
sea ice in the Arctic Ocean is diminishing Earth's albedo, or reflectivity, by an amount considerably
larger than previously estimated, according to a new study that uses data from instruments that fly aboard several NASA satellites.
I am very well aware and have previously blogged that there are multiple factors that determine the degree of
ice lost any given year — but the literature is clear that even in 2007, global warming played «a
large part» (see «What drove the dramatic
retreat of arctic
sea ice during summer 2007?
Even with the increasing summer
retreats of
sea ice, which climate scientists say are being driven in
large part by global warming caused by humans....
Even with the increasing summer
retreats of
sea ice, which polar scientists say probably are being driven in
large part by global warming caused by humans....
A
large polar bear, stuck ashore, approached biologists studying coastal erosion related to
sea -
ice retreats.
Recent estimates indicate that the Antarctic
sea ice cover is expanding at a statistically significant rate with a magnitude one - third as
large as the rapid rate of
sea ice retreat in the Arctic.
Marine
ice sheet instability occurs when sub-shelf melt rate is
large enough to force the
ice sheet grounding line to
retreat into an area where the
ice is grounded below
sea level on an inward - sloping bedrock, then it can become unstable.
As the
sea ice retreats, the Arctic's fossil treasures are eyed greedily by
large corporations and nations bordering the Arctic Ocean.
The albedo change resulting from the snowline
retreat on land is similarly
large as the
retreat of
sea ice, so the combined impact could be well over 2 W / sq m. To put this in context, albedo changes in the Arctic alone could more than double the net radiative forcing resulting from the emissions caused by all people of the world, estimated by the IPCC to be 1.6 W / sq m in 2007 and 2.29 W / sq m in 2013.»
This has never happened before because the
sea ice never
retreated very much in the summer and the water temperature could not rise above zero because of the
ice cover... The permafrost is acting as a cap for a very
large amount of methane (CH4), which is sitting in the sediments underneath in the form of methane hydrates.
As they warm and as the
sea ice retreats,
larger areas are freed for invasion by major blooms of algae and other microbes.
He noted the first week of October in 2015 had a
large net increase of
sea ice after an extended
retreat.
Thus, when
sea ice is retreating or advancing at a high rate over the course of the month, as was the case for December 2016, the Sea Ice Index monthly average can yield a larger extent than from simply averaging daily extent valu
sea ice is retreating or advancing at a high rate over the course of the month, as was the case for December 2016, the Sea Ice Index monthly average can yield a larger extent than from simply averaging daily extent valu
ice is
retreating or advancing at a high rate over the course of the month, as was the case for December 2016, the
Sea Ice Index monthly average can yield a larger extent than from simply averaging daily extent valu
Sea Ice Index monthly average can yield a larger extent than from simply averaging daily extent valu
Ice Index monthly average can yield a
larger extent than from simply averaging daily extent values.
Walrus depend on
sea ice as a platform for giving birth, nursing, and resting between dives to the seafloor, where they feed.46 In recent years, when summer sea ice in the Chukchi Sea retreated over waters that were too deep for walrus to feed, 47,48 large numbers of walrus abandoned the ice and came asho
sea ice as a platform for giving birth, nursing, and resting between dives to the seafloor, where they feed.46 In recent years, when summer
sea ice in the Chukchi Sea retreated over waters that were too deep for walrus to feed, 47,48 large numbers of walrus abandoned the ice and came asho
sea ice in the Chukchi
Sea retreated over waters that were too deep for walrus to feed, 47,48 large numbers of walrus abandoned the ice and came asho
Sea retreated over waters that were too deep for walrus to feed, 47,48
large numbers of walrus abandoned the
ice and came ashore.
This overshoot is caused predominantly by the reduction of the meltwater in the northern North Atlantic associated with the
retreat of the
large amount of
sea ice, an effect that becomes dominant when the subpolar North Atlantic is covered by
sea ice as in the glacial condition.
Arctic
sea -
ice cover will diminish rapidly under global warming, but its rate of
retreat in boreal winter shows
large intermodel differences across the models involved in Phase 5 of the Coupled Model Intercomparison Project...