Climate change and
the resulting loss of sea ice during the summer have opened new hunting territory for the killer whales in the eastern Canadian Arctic, but scientists knew very little about these animals until they tapped into the traditional knowledge of Inuit hunters who shared unique firsthand descriptions of orca hunting tactics.
Not exact matches
There's no getting around the fact that the
loss of the Greenland
Ice Sheet and the
resulting sea level rise would be pretty devastating for humanity.
This gives confidence in the predictions
of the current generation
of ice - sheet models which are used to forecast future
ice loss from Antarctica and
resulting sea - level rise.»
The
results do suggest however that if
sea ice loss continues as it has over recent decades, the risk
of wet summers may increase.
The study found that
loss of Arctic
sea ice shifts the jet stream further south than normal
resulting in increased rain during the summer in northwest Europe.
«
Loss of sea ice has
resulted in walrus hauling out on land in Alaska and Russia in massive numbers — these land haul outs
result in trampling
of their young,» Laidre said.
The report also shows that warmer
seas have
resulted in a significant
loss of ice in the Arctic region.
Kuhn, from Germany's Alfred Wegener Institute, added, «This gives confidence in the predictions
of the current generation
of ice sheet models which are used to forecast future
ice loss from Antarctica and
resulting sea - level rise.»
[SLIDE 17] And so not surprisingly
sea level is rising as a
result not only
of the
loss of mountain glaciers and the great land
ice sheets —
losses from the great land
ice sheets; but also thermal expansion
of sea water because the ocean is getting warmer.
But as Maslowski quotes from Untersteiner, «A linear increase in heat in the Arctic Ocean will
result in a nonlinear, and accelerating,
loss of sea ice.»
People need to know what will be the immediate, the short and medium term «Impacts» in people's lives as a
result of that Arctic
Sea Ice Loss — including the specific types
of likely «Impacts» in the region in which those people actually live and work.
Over all, the pace
of sea - level rise from the
resulting ice loss doesn't go beyond about 1.5 feet per century, Dr. Pollard said in an interview, a far cry from what was thought possible a couple
of decades ago.
The authors
of the study — Ricarda Winkelmann and Anders Levermann from the Potsdam Institute for Climate Impact Research, Ken Caldeira
of the Carnegie Institution for Science and Andy Ridgwell
of the University
of Bristol — find that the
loss of the entire Antarctic
ice sheet would take millenniums, but up to 100 feet
of sea level rise could
result within 1,000 years, with the rate
of the rise beginning to increase a century or two from now.
RE: In reply to the English Gentleman's (CobblyWorlds) question: «Basically I'd like to know if I am wrong to be concerned that we are likely to see changes in the UK and Europe as a
result of the
ice loss and high latitude warming well before the N. pole is
sea -
ice «free» in the summer»
One
result is greater
loss of Arctic
sea ice in the annual summer warmup.
Basically I'd like to know if I am wrong to be concerned that we are likely to see changes in the UK and Europe as a
result of the
ice loss and high latitude warming well before the N. pole is
sea -
ice «free» in the summer.
So, the positive feedback between melt and velocities implies that more melt leads to higher velocities, which bring in more
ice from cold regions to warm regions which increases the melt and hence the velocity etc, with as a final
result a rapid
loss of ice and hence an enhanced increased
sea level.
For example, recent
results from the Met Office do show that there is a detectable human impact in the long - term decline in
sea ice over the past 30 years, and all the evidence points to a complete
loss of summer
sea ice much later this century.
The fate
of sea ice in the Arctic Ocean is determined by a complicated mix
of factors, including the pressure changes, with the biggest
loss of old thick
ice resulting more from a great «flush»
of floes than melting, Dr. Rigor and many other scientists tracking the region say.
quote
loss of sea ice in the arctic leads to increased ocean heat
loss to the atmosphere
resulting in more snow elsewhere.
The part you are missing is that in the Arctic, the
loss of summer
sea ice,
results in a strong reduction in reflection
of the sunlight, and absorption by the open ocean.
Just recently a «scientist» at the German hyper alarmist PIK «found out» that the (temporary)
loss of sea ice in the arctic leads to increased ocean heat
loss to the atmosphere
resulting in more snow elsewhere.
Bob Tisdale says: January 10, 2011 at 3:05 pm Manfred says: «Just recently a «scientist» at the German hyper alarmist PIK «found out» that the (temporary)
loss of sea ice in the arctic leads to increased ocean heat
loss to the atmosphere
resulting in more snow elsewhere.
The warming
of approximately 0.1 — 0.2 °C per decade that has
resulted is very likely the primary cause
of the increasing
loss of snow cover and Arctic
sea ice,
of more frequent occurrence
of very heavy precipitation,
of rising
sea level, and
of shifts in the natural ranges
of plants and animals.
At least relative to my questions above, what struck me was the possibility
of starting with your reduction and analysis
of the snow cover / fall anomaly data to come up with a research project based on some quite complicated but fascinating calculations on net TOA energy balance as a
result of your conclusion about the relation
of Arctic
sea ice loss to NH snow cover / amount anomaly.
While
sea ice loss in 2012 had some atmospheric conditions supporting
loss at the beginning
of summer, the
loss in 2012 probably was the
result of thin
sea ice initial conditions.
Pat Michaels sums it up: Such
results throw a bit
of cold water on alarmist ideas that rising temperatures will lead to ever - accelerating
ice loss from Greenland and accelerating
sea level rise.
Ainley believed the DuDu colony had been unable to recover since 1980 because global warming had caused a thinning
of the
sea ice resulting in a premature
loss of sea ice that was drowning chicks.
Sea ice is lost due to increasing ocean heat transport into the arctic and the
resulting loss of ice causes the atmosphere to warm.
Several degrees
of warming is not trivial, it would
result in
sea level rises large enough to wipe out many coastal areas which are currently heavily populated - parts
of Florida, Bangladesh, India, Bangkok, etc, etc, quite apart from other changes possibly precipitated by the
loss of the
ice caps.
The fact that a great deal
of the melt in Arctic
sea ice is affected by the accumulating heat in the oceans and the fact that energy is advected to the Arctic via the oceans in much larger amounts than via the atmosphere and the extreme
loss we've seen in Arctic
sea ice volume as a
result means nothing to the «skeptics».
The
resulting enhanced
loss of summer and winter
sea ice resulted in feedbacks, associated with Arctic Amplification, which has raised Arctic air temperatures at a rate twice the global average.
Nor did the BRT discuss research detailing how the
loss of sea ice in the 1990s was not caused by warmer air, but by a shift in the Arctic Oscillation
resulting in below - freezing winds that pushed thick insulating
ice out into the Atlantic.
You wrote - «The fact that a great deal
of the melt in Arctic
sea ice is affected by the accumulating heat in the oceans and the fact that energy is advected to the Arctic via the oceans in much larger amounts than via the atmosphere and the extreme
loss we've seen in Arctic
sea ice volume as a
result means nothing to the «skeptics».»
Results show that the globally and annually averaged radiative forcing caused by the observed loss of sea ice in the Arctic between 1979 and 2007 is approximately 0.1 W m − 2; a complete removal of Arctic sea ice results in a forcing of about 0.7 W m − 2, while a more realistic ice - free - summer scenario (no ice for one month, decreased ice at all other times of the year) results in a forcing of about 0.3 W m − 2, similar to present - day anthropogenic forcing caused by haloc
Results show that the globally and annually averaged radiative forcing caused by the observed
loss of sea ice in the Arctic between 1979 and 2007 is approximately 0.1 W m − 2; a complete removal
of Arctic
sea ice results in a forcing of about 0.7 W m − 2, while a more realistic ice - free - summer scenario (no ice for one month, decreased ice at all other times of the year) results in a forcing of about 0.3 W m − 2, similar to present - day anthropogenic forcing caused by haloc
results in a forcing
of about 0.7 W m − 2, while a more realistic
ice - free - summer scenario (no
ice for one month, decreased
ice at all other times
of the year)
results in a forcing of about 0.3 W m − 2, similar to present - day anthropogenic forcing caused by haloc
results in a forcing
of about 0.3 W m − 2, similar to present - day anthropogenic forcing caused by halocarbons.
Unprecedented warm temperatures lead to the
loss of more than half
of the
sea ice cover in the Bering Sea in two weeks, resulting in record lows for Arctic Ocean sea ice extent for the month of Februa
sea ice cover in the Bering
Sea in two weeks, resulting in record lows for Arctic Ocean sea ice extent for the month of Februa
Sea in two weeks,
resulting in record lows for Arctic Ocean
sea ice extent for the month of Februa
sea ice extent for the month
of February.
Your thesis appears to be that a net positive
sea ice feedback should
result in runaway
loss of ice, a fundamental misunderstanding
of the use
of feedbacks in climate science.
Still, the consensus
of a stable low level
of sea ice extent or continued modest
sea ice loss is a strong
result.
But late May and the first half
of June had the Arctic Dipole (AD) Pressure pattern that is favorable for
ice loss,
resulting in a record trend in
sea ice loss.
According to a study published Monday, global
sea level rise is accelerating as a
result of ocean water warming and sooner - than - expected
ice loss from the west Antarctica and Greenland
ice sheets, and could reach 26 inches by 2100.
Further, it only took one month
of persistent wind conditions to slow the rate
of sea ice loss,
resulting in an increase in 2009
sea ice extent compared to 2007 and 2008.
Our
results stress the importance
of considering
loss of sea ice thickness in future climate change assessments.
Evidence is also strong that Alaska
ice mass
loss contributes to global
sea level rise, 65 with latest
results permitting quantitative evaluation
of losses globally.66
Or Arctic
sea ice loss could lead to an increase
of snow on high - latitude land, which in turn impacts the jet stream
resulting in cold Eurasian and North American winters.
Research has shown that even a relatively small
loss of ice from Greenland will
result in significant
sea level rise.
Ice loss during the second half of August was in fact the slowest observed during the last decade, resulting in the observed, unexceptional September sea ice extent being recorded despite the extremely low ice conditions present at the start of the summ
Ice loss during the second half
of August was in fact the slowest observed during the last decade,
resulting in the observed, unexceptional September
sea ice extent being recorded despite the extremely low ice conditions present at the start of the summ
ice extent being recorded despite the extremely low
ice conditions present at the start of the summ
ice conditions present at the start
of the summer.
Cohen will present the research
results today at the National Academy
of Sciences workshop on arctic linkages titled «Linkages between Arctic
Sea Ice Loss and Mid ‐ Latitude Weather Patterns» in College Park, Maryland.
One comment from the modeling
results from the CMIP5 archive, the models do show trends
of sea ice loss during the 1920s / 1940s consistent with the warming trend during that time - period.
Pfeffer (contributor to the
sea level chapter 13) was the least hysterical, pointing out that the AR5 increase in projected SL rise over AR4 is mostly a
result of having incorporated «rapid dynamic
ice loss», a phenomenon that is not yet well understood.
Secretary Salazar has so far defended the Bush - era «threatened» designation, claiming that threats to the species are only
of concern in the future — notwithstanding the fact that polar bears are already drowning and starving as a
result of sea -
ice loss, with many populations declining.