For both summer and winter Arctic sea - ice, the area coverage is declining at present (with summer sea -
ice declining more markedly; ref.
Not exact matches
I suspect that it will stay there until the temperature starts to
decline again, at which point, as in the 1970s, we'll hear
more about the inevitable return of an
ice age.
Ice cream prices have risen by more than a quarter over the past five years and sales volumes have declined, but most Europeans still consider ice cream an affordable treat, according to new research from Mint
Ice cream prices have risen by
more than a quarter over the past five years and sales volumes have
declined, but most Europeans still consider
ice cream an affordable treat, according to new research from Mint
ice cream an affordable treat, according to new research from Mintel.
As climate change became a concern, researchers assumed that warming would favor the
ice - avoiding chinstrap penguins, sending the Adelies into
decline as
more and
more of their winter sea -
ice home disappeared.
Higher temperatures mean
more melting and thawing of
ice from glaciers and permafrost, which has led to the
decline of the most common species, the nematode Scottnema lindsayae.
«One societally relevant implication is that
more storminess probably means
more erosion of Arctic coastlines, especially in tandem with
declines in buffering sea
ice cover and increases in thawing coastal permafrost,» concluded Dr. Vavrus.
The volume of
ice divergence has doubled since 2000 due to a
more mobile
ice cover as multiyear
ice has
declined, which can explain the drastic
ice reduction in the Arctic Ocean in recent years.
Over the past few years, the
ice on the Arctic Ocean in late summer — covers less area than it did 30 years ago;
declined but then recovered to about the same area it had 30 years ago; or covers
more area than it did 30 years ago.
As temperatures rise, sea
ice declines, making it
more difficult for Adélie penguins to survive.
I guess I am surprised that with better understanding of the importance of water vapor feedback, sulfate aerosols, black carbon aerosols,
more rapid than expected
declines in sea
ice and attendant decreases in albedo, effects of the deposition of soot and dust on snow and
ice decreasing albedo, and a recognition of the importance of GHGs that were probably not considered 30 years ago, that the sensitivity has changed so little over time.
Relict habitats (remnants of the last
Ice Age
more than 10 000 years ago) in Portugal are officially recognised as being in an inadequate condition and in
decline.
But that multi-year
ice is also on the
decline, leaving
more fragile first - year
ice that is easier to melt.
The volume of sea
ice left at the end of the summer melt season seems to vary
more from year to year than had perhaps been previously appreciated; after
declining for several years, sea
ice volume shot up after the unusually cool summer of 2013, the data revealed.
Considering
ice volumes over the last decade, CCSM4 AR4 is predicting a
decline of some 200 cu km pa while PIOMAS models suggest something
more like 600 cu km pa.
Sea
ice decline alters the pole pressure gradient, leads for instance to a higher amplitude Jet Stream and
more ridges which create
more stucky — persistent conditions.
I guess I am surprised that with better understanding of the importance of water vapor feedback, sulfate aerosols, black carbon aerosols,
more rapid than expected
declines in sea
ice and attendant decreases in albedo, effects of the deposition of soot and dust on snow and
ice decreasing albedo, and a recognition of the importance of GHGs that were probably not considered 30 years ago, that the sensitivity has changed so little over time.
BTW, my fearless «denialism forecast» for the next month is for
declining mentions of surface temperature trends, 30 - 50 % chance of
more scientist bashing, and sporadic outbreaks of «Arctic sea
ice recovery» — at least until the melting season gathers some steam.
Summer sea
ice in the Arctic is
declining at an estimated rate of 10 percent per decade or
more, and Arctic Ocean sea lanes could be open as early as the summer of 2030.
How can anybody have much confidence in the so called «published projections» for the
ice free state between 2037 and 2100, given that these projections have been wrong every single time they have been made over the last decade or
more; they missed the collapse in area in 2007 and they also missed the exponentially
declining behavior over the last several decades.
So, I was curious about your recent paper and whether there was any discussion of changes in the THC poleward of the GIS shelf vs the data from the RAPID program line located at 26.5 N. With the
decline in minimum extent and volume of sea -
ice, one might expect to see
more THC sinking into the Arctic Ocean, with consequences for both climate and weather.
Glaciers have continued to melt at accelerating rates, arctic summer
ice is
declining at accelerating rates,
more 6 - 10 thousand year old
ice shelves are collapsing.
Thus, even though the
ice extent is about equal to the long term average right now, for summer weather typical of the past few years, the
decline in
ice area will be
more rapid than in other years.
Enhanced water vapor absorbs
more incoming sunlight and reflection from snow and
ice declines.
The combination of sea level rise,
ice extent
decline, earlier melting and later appearance, warming permafrost and
more has begun to destroy the land and the culture of those who live there.
The «models» say that
ice on the Great Lakes will be rare /
declining in the future, yet, as I type this (about 100 feet south of the southern shore of Lake Ontario) there is
more ice on the water than I have seen in the last 3 decades.
Still
more striking, and significant, has been a severe
decline in the average thickness of the
ice pack, and thus of its volume (graph).
For the past 55 million years the global surface temperature has
declined by
more than 10 °C from a «hot house» condition into an «
ice house» with increasing temperature variability as depicted in Figure 1 (Mya = millions of years ago).
So just as
more cold and
more warmth are both evidence of AGW so is Arctic sea
ice decline proof of AGW and Antarctic sea
ice increases are also proof of AGW.
He said: «The sea
ice is not only
declining, the pace of the
decline is becoming
more drastic,» Comiso said.
In a belated Christmas present, Crockford provided this December 26 posting that further deflates the already collapsing narrative about the non-existent «crisis» of
declining arctic sea
ice: «Polar bear habitat —
more Arctic sea
ice in Canada this week than in early 1970s.»
If in the radiosonde data water vapor amount has
declined it the past 60 years globally (as the 2010 paper Fig 9 shows), this might also mean that
more water in the air is there in clouds as
ice.
Figure 9: Actual observations of September Arctic sea
ice, in red, show a
more severe
decline than any of the 18 computer models, averaged in a dashed line, that the 2007 IPCC reports reference (NSIDC)
The dramatic
decline in Arctic sea
ice and snow is one of the most profound signs of global warming and has coincided with «a period of ostensibly
more frequent events of extreme weather across the mid-latitudes, including extreme heat and rainfall events and recent severe winters,» according to the conference organizers, who are posting updates under the #arctic17 hashtag on Twitter.
The figure shows a clear and steady
decline in Arctic sea
ice since the late 1970s, with lighter darker colours (earlier years) at the top and lighter colors (
more recent years) much lower.
While the long - term
decline in Arctic sea
ice is clear, the Antarctic is much
more complicated.
Is the dramatic
decline of Arctic sea
ice, spurred by manmade global warming, making the weather where we live
more extreme?
For some years now we have been exposed to mournful photographs of polar bears floating away on
ice floes, or otherwise appearing endangered... The theory on which polar bears are supposed to be endangered because their environment is becoming
more benign has never been entirely clear, nor has there been data to support the claim that their populations are
declining.
The absence of anomalous features evident in 2007 in SLP and stratospheric and surface winds in spring in 2011 indicates that accelerated
decline associated with the former will not be an artifact of dynamical phenomena, although a thinner and
more mobile
ice cover may lower the wind forcing threshold required for increased
ice export.
Furthermore, the Arctic has warmed
more than twice as fast as the global average, a phenomenon known as Arctic amplification, and stimulated by the combined increasing Arctic temperatures and rapid loss of sea
ice in all seasons along with
declining snow cover in the spring and early summer.
Check NASA GISS for one — Antarctic sea
ice was modeled to
decline on percentage basis
more than Arctic.
Just because we don't have all the information on how much
more ice the Arctic had on previous dates, doesn't make this
decline any less important.
This, along with
more vulnerable thinner first - year
ice throughout much of the Arctic, suggests a faster than normal
decline through the rest of the melt season.
even
more to the point cryosphere today has
ice area growing steadily over the past few days and IJIS has it static or
declining.
Not only does this low - pressure area, or cyclone, look bigger,
more intense and longer - lasting than the one from last year, the
ice also seems to be in a weaker state than ever, as evidenced by the fact that 2012 trend lines on both sea
ice area and sea
ice extent graphs track lower than previous record years, despite weather that until recently would completely stall the
decline.
For
more on the terrestrial foods topic, see my detailed discussion in this previous post, and this recent (March 30) ScienceNews report on yet another, largely anecdotal «polar bears resort to bird eggs because of
declining sea
ice» story (see photo below, based on a new paper by Prop and colleagues), which was also covered March 31 at the DailyMail («Polar bears are forced to raid seabird nests as Arctic sea
ice melts — eating
more than 200 eggs in two hours,» with lots of hand - wringing and sea
ice hype but little mention of the fact that there are many
more bears now than there were in the early 1970s around Svalbard or that the variable, cyclical, AMO (not global warming) has had the largest impact on sea
ice conditions in the Barents Sea).
Sea
ice extent for September 2007 was 4.3 million square kilometers — a reduction of
more than 40 % from the 1980s and a rapid
decline to
more than 20 % below the previous record minimum.
However, the pace of
decline returned to near - average rates by July, and the end - of - summer minimum sea
ice extent, recorded on September 10, eventually tied for second lowest with 2007 (2012 remains the lowest in the satellite time series by
more than 600,000 square kilometers or 232,000 square miles).
At the start of fall freeze - up, sea
ice continues to be thinner and
more mobile than prior to 2005, which might cause the
decline in extent to persist or accelerate.
There's a lot
more misinformation in Joe D'Aleo's post at WUWT about the
decline of Arctic sea
ice than just the fake portrayal of Arctic regional temperature highlighted in the last post.
Concensus AGW science predicts «X» as a consequence of «A.» But that doesn't mean it has to happen — it's still possible that AGW is sound but there something quirky about the Arctic that they missed, or that the changes will happen
more slowly than expected, so it won't warm faster than the globe and / or sea
ice won't
decline.