Not exact matches
Although global warming may
now be a serious concern, it is likely that long - term climate cycles will cause large
ice sheets to return at some time
in the distant future, and cataclysmic outburst floods will probably recur
in this
region.»
Now, a new modeling study finds a link between these winters and the decline of sea
ice in a part of the Arctic Ocean known as the Barents - Kara sea
region, bordering Norway and Russia.
In previously
ice - rich areas such as the Beaufort Gyre off the Alaskan coast or the
region south of Spitsbergen, the sea
ice is considerably thinner
now than it normally is during the spring.
«A lot of what we are seeing right
now in the coastal
regions is that warming ocean waters are melting Antarctica's glaciers and
ice shelves, but this process may just be the beginning,» Shevenell said.
Using climate models at the Laboratoire de Météorologie Dynamique, François Forget (CNRS) and Martin Turbet (UPMC) show that, with a cold climate and an atmosphere denser than it is today,
ice accumulated at around latitude 25 ° S,
in regions corresponding to the sources of
now dry river beds.
Relevant to this issue, there is currently a debate among paleoclimatologists with respect to the following condundrum: A dramatic recession of the more - than - 11,000 year old
ice cap of Mt. Kilimanjaro
in tropical East Africa is taking place despite any clear evidence that temperatures have exceeded the melting threshold (one explanation is that the changes are largely associated with a drying atmosphere
in the
region; the most recent evidence, however, seems to indicate that melting may indeed
now be underway).
Such research is
now becoming urgent as regional climate change is already impacting upon areas of West Antarctica and the Antarctic Peninsula [30] and colonies
in this
region may already be affected by the consequent loss of sea
ice [8].
Indigenous people have inhabited the land we
now call Australia for at least 50,000 years... The Pilbara
region's Burrup Peninsula is the site of more than a million petroglyphs, dating back
in time to the last
Ice Age.
The trim we tested had it all, but most importantly, it had all - wheel drive, which for more and more families
in regions that get snow and
ice is a defacto starting point
now.
Now an unmissable attraction
in the Bernese Oberland
region, since 1997 more than five hundred thousand visitors take the opportunity each year to ascend into a vast and tranquil panorama of glittering mountain peaks and unending snow and
ice.
Relevant to this issue, there is currently a debate among paleoclimatologists with respect to the following condundrum: A dramatic recession of the more - than - 11,000 year old
ice cap of Mt. Kilimanjaro
in tropical East Africa is taking place despite any clear evidence that temperatures have exceeded the melting threshold (one explanation is that the changes are largely associated with a drying atmosphere
in the
region; the most recent evidence, however, seems to indicate that melting may indeed
now be underway).
Aside from the fact that 90 degrees north sits
in the middle of a 2.5 - mile - deep ocean, that's quite a statement considering two things: first, no one has been routinely monitoring sea
ice along both coastlines between then and
now, and second, the
region was clearly warmer than it is today (
in summers) around 8,000 to 10,000 years ago — on both the Siberian and North American sides.
They still think that the Antarctic surface is warming, not cooling like you
now believe because of this Hansen paper: «
In contrast, the Southern Ocean (specifically the
region where Antarctic sea
ice forms) has been warming at 0.17 °C per decade.»
Right
now we
in the Great Lakes
Region have very cold Arctic weather and
ice cover for all of the GL is running about 2 to 4 weeks ahead of October projections and the historic
ice cover for the Great Lakes.
In fact, Arctic ice growth in the second half of September was rapid and there is now more ice than there was at this date in 2007 and 2012 (when polar bears in those regions considered most at risk did not die off in droves
In fact, Arctic
ice growth
in the second half of September was rapid and there is now more ice than there was at this date in 2007 and 2012 (when polar bears in those regions considered most at risk did not die off in droves
in the second half of September was rapid and there is
now more
ice than there was at this date
in 2007 and 2012 (when polar bears in those regions considered most at risk did not die off in droves
in 2007 and 2012 (when polar bears
in those regions considered most at risk did not die off in droves
in those
regions considered most at risk did not die off
in droves
in droves).
A practical example of cooperation that is already under way is the Arctic
Now online service, which provides close to real - time data on
ice and snow conditions
in the planet's northern
regions.
Low heights
in the Atlantic side suggest colder temperatures and less sea
ice export, while north of Siberia winds are
now offshore, which may reverse the persistence of sea
ice in that
region.
Polar bears are one of the most sensitive Arctic marine mammals to climate warming because they spend most of their lives on sea
ice.35 Declining sea
ice in northern Alaska is associated with smaller bears, probably because of less successful hunting of seals, which are themselves ice - dependent and so are projected to decline with diminishing ice and snow cover.36, 37,38,39 Although bears can give birth to cubs on sea ice, increasing numbers of female bears now come ashore in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.
in northern Alaska is associated with smaller bears, probably because of less successful hunting of seals, which are themselves
ice - dependent and so are projected to decline with diminishing
ice and snow cover.36, 37,38,39 Although bears can give birth to cubs on sea
ice, increasing numbers of female bears
now come ashore
in Alaska in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.
in Alaska
in the summer and fall40 and den on land.41 In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.
in the summer and fall40 and den on land.41
In Hudson Bay, Canada, the most studied population in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.
In Hudson Bay, Canada, the most studied population
in the Arctic, sea ice is now absent for three weeks longer than just a few decades ago, resulting in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.
in the Arctic, sea
ice is
now absent for three weeks longer than just a few decades ago, resulting
in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population now estimated to be in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.
in less body fat, reduced survival of both the youngest and oldest bears, 42 and a population
now estimated to be
in decline43 and projected to be in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.
in decline43 and projected to be
in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea region.
in jeopardy.44 Similar polar bear population declines are projected for the Beaufort Sea
region.45
Right
now,
in the Everest
region,
ice forms at 3,200 metres
in January, but at 5,500 metres
in August.
Freeze dates
in the
region are
now occurring on average six days later than
in the past, and the
ice is breaking up on average around 18 days earlier.
«Reports of rapid disintegration of Greenland's
ice ignore the fact that the
region was warmer than it is
now for several decades
in the early 20th century, before humans could have had much influence on climate.
Researchers have
now linked the loss of sea
ice in the Arctic
region, along with an increase
in snow cover
in northern Asia, to a weaker polar vortex.
«
Ice sheets
now appear to be contributing modestly to sea level rise because warming has increased mass loss from coastal areas more than warming has increased mass gain from enhanced snowfall
in cold central
regions,» the report by a team led by Professor Richard Alley of Pennsylvania State University
in the US says.
Parts of the earth that are
now rarely affected by tsunamis, such as northern coastal
regions, could be hit by «glacial earthquakes,»
in which glacier
ice crashes to earth
in massive landslides.
Updated information about
ice extent
in this
region indicates substantial
ice retreat
in the eastern Barents and the Kara Seas, where
ice is
now well below climatological extent (Figure 5), with little change
in the Greenland Sea and Fram Strait
region, where the
ice edge is within the decadal mean range except for the southernmost stretches shown
in Figure 5.
But as that
ice recedes, and likely disappears
in the near future (the first truly
ice - free day is due any summer
now), it opens up a new
region of the planet to exploitation and conflict.