What confuddles me is this... why are both the poles showing
increasing ice coverage if the ocean surface temps are so warm?
Or the ones with
increasing ice coverage on them?
Not exact matches
Reduced lake
ice coverage, in turn,
increases the amount of sunlight lakes absorb.
«If
ice caps and glaciers were to continue to crack and break into pieces, [the amount of] their surface area that is exposed to air would be significantly
increased, which could lead to accelerated melting and much - reduced
coverage area on the Earth,» Buehler said in a statement.
This changed ocean chemistry and reduced atmospheric CO2 levels, which
increased global
ice coverage and propelled Earth into severe icehouse conditions.
(There are equilibrium climates between the points where the runaway starts and where it ends, but they are unstable equilibria, and the equilibrium
coverage of snow /
ice increases with forcing that would cause warming.)
This
increase was based on the June
ice extent remaining within 1 sigma of the 1981 - 2010 long - term mean and nearly average melt pond
coverage compared to recent years.
Then from 1995 to 2002, the
ice area actually
increased (although you would never read that in the popular press), it decreased again in 2004, and in 2005 it
increased again â $ ¦ and at the end of 2005, the amount of Arctic
ice was back to the 1979 - 2000 average
ice coverage.
Ice ages come on slowly as the albedo from greater and greated snow
coverage increases causing greater and greater cooling, but end rapidly as the melt back rapidly decreases the albedo.
Likewise NOAA's 2014 Arctic Report card also stated the «
coverage of multiyear
ice in March 2014
increased to 31 % of the
ice cover from the previous year's value of 22 %.»
The NH had exceptional snow
coverage this year and Arctic
ice has been
increasing!
The
increase in longwave cooling is traced to decreasing
coverage by
ice clouds, potentially supporting Lindzen's «infrared iris» hypothesis of climate stabilization.
As to the Arctic icecap, the Daily Mail conveniently fails to mention that the 60 %
increase in 2013 over 2012 still leaves the icecap
coverage 20 % lower than it was in 1978, when NSIDC's record - keeping on the extent of Arctic
ice began.
Or look at it the other way around: if the
ice cover were a record high in late summer, the opportunity for
ice growth (
increased area
coverage) would be reduced, since there would be less open water that could freeze over.
Sea
ice has been slowly
increasing in
coverage, though this is largely due to variations in the Southern Annular Mode.
The reason it is a mystery is because that
increase in sea
ice coverage is contrary to the theory of global warming.
Note how they neglect to mention the
increased Arctic
ice coverage for the last 2 years by looking back to earlier averages?
Albedo should
increase in response to very low solar conditions which should result in an
increase in major volcanic activity,
increase in global cloud
coverage and sea
ice / snow
coverage.
The Statement also highlighted that long - term indicators of climate change such as
increasing carbon dioxide concentrations, sea level rise and ocean acidification continue «unabated», with Arctic sea
ice coverage remaining below average and the previously stable Antarctic sea
ice extent at or near a record low.
Scientific confidence of the occurrence of climate change include, for example, that over at least the last 50 years there have been
increases in the atmospheric concentration of CO2;
increased nitrogen and soot (black carbon) deposition; changes in the surface heat and moisture fluxes over land;
increases in lower tropospheric and upper ocean temperatures and ocean heat content; the elevation of sea level; and a large decrease in summer Arctic sea
ice coverage and a modest
increase in Antarctic sea
ice coverage.
(2) Jeff Id's analysis of sea
ice data showed no
increase of
ice coverage during the past 30 years.
However, it says «The
increase in longwave cooling is traced to decreasing
coverage by
ice clouds, potentially supporting Lindzen's «infrared iris» hypothesis of climate stabilization.»