What I can share from our findings is that the freshwater balance, and therefore the halocline, is largely responsible for the winter time trends
of sea ice growth.
Since the IPO shifted to its negative phase in 1999, the rate
of sea ice growth in the Antarctic rose nearly fivefold between 2000 and 2014.
While other, for instance recently Hansen et al (2015), see large levels
of sea ice growth in Antarctica as a by - product of AGW, and perhaps a by - product we should be very worried about.
Not exact matches
A new University
of Washington study, with funding and satellite data from NASA and other agencies, finds a trend toward earlier
sea ice melt in the spring and later
ice growth in the fall across all 19 polar bear populations, which can negatively impact the feeding and breeding capabilities
of the bears.
This year's record low happened just two years after several monthly record high
sea ice extents in Antarctica and decades
of moderate
sea ice growth.
The
growth of Antarctic
sea ice in the winter exhibits more short - term ups and downs (seen as wiggles on the graphs charting the
growth) than Arctic
sea ice does, and so the Antarctic maximum takes longer to emerge from the noise.
«Because these plants are photosynthetic, it's not surprising to find that as the amount
of sea ice cover declined, the amount
of [photosynthesis] increased,» says biological oceanographer Kevin Arrigo
of Stanford University's School
of Earth Sciences, who led an effort to use the MODIS (Moderate Resolution Imaging Spectroradiometer) devices on NASA's Terra and Aqua satellites to determine changes in phytoplankton
growth.
And, as Walt Meier
of NASA's Goddard Space Flight Center noted here, Antarctic
sea ice already covers a huge area — it doesn't take much
growth for it to set a new record.
Some places, like the Ross
Sea, have seen growth of sea ice — but others, like the Bellingshausen Sea west of the Antarctic Peninsula, have seen significant sea ice lo
Sea, have seen
growth of sea ice — but others, like the Bellingshausen Sea west of the Antarctic Peninsula, have seen significant sea ice lo
sea ice — but others, like the Bellingshausen
Sea west of the Antarctic Peninsula, have seen significant sea ice lo
Sea west
of the Antarctic Peninsula, have seen significant
sea ice lo
sea ice loss.
The researchers then used a computer model
of Earth that simulated
growth in the Antarctic
ice sheet to see what geophysical impacts this would have aside from generally lowering the
sea level.
Eric Post, a Penn State University professor
of biology, and Jeffrey Kerby, a Penn State graduate student, have linked the melting
of Arctic
sea ice with changes in the timing
of plant
growth on land, which in turn is associated with lower production
of calves by caribou in the area.
«Stronger winds may explain puzzling
growth of sea ice in Antarctica, model shows.»
The abrupt changes seen in the Greenland
ice cores are due to
sea -
ice changes and the slower changes are the
growth or retreat
of continental
ice sheets.
Continuous annually layered strata provide the best kind
of geological archive in which to search for a «golden spike» — these form on the floors
of oxygen - starved
seas and lakes, in glacial
ice, and in corals and trees with seasonal
growth rings
A recent study, for example, pinpointed a natural shift in the Pacific Ocean as a key factor in a
growth spurt
of Antarctic
sea ice between 2000 and 2014.
Freshwater flux has little effect on simulated Northern Hemisphere
sea ice until the 7th decade
of freshwater
growth (Fig. 13d), but Southern Hemisphere
sea ice is more sensitive, with substantial response in the 5th decade and large response in the 6th decade.
Capping off a season
of sustained, mind - boggling warm weather and stunted
sea ice growth, the annual Arctic
sea ice maximum hit its lowest level ever recorded.
Fresher, colder water freezes more easily, so this mechanism may contribute to the
growth in area
of Antarctic
sea ice.
Sea ice growth was abnormally slow during the first and third weeks
of November.
As a result, ships were locked out
of the Bering
Sea this past year by record
ice growth, and Alaskans are now shivering in temperatures as low as minus 50 degrees F (minus 46 degrees C).
The abrupt changes seen in the Greenland
ice cores are due to
sea -
ice changes and the slower changes are the
growth or retreat
of continental
ice sheets.
Unless scientists have totally missed the mark with their understanding
of the greenhouse effect, there is no doubt that continued expansion
of our population, coupled with continued economic
growth spurred on primarily by fossil fuels, is going to continue to warm the planet, melt
ice, raise
sea levels, etc. for a long time to come.
The
sea ice component represents
sea ice in multiple categories
of thickness and accounts for changes in thickness due to
growth and melt as well as mechanical deformation
of ice (Thorndike et al. 1975, Hibler 1980).
Re # 49 & # 82 The limitations on the
growth of algae in the arctic varies with the season, the effect
of sea -
ice melting is not as certain as Harold would have us believe: http://www.agu.org/pubs/crossref/2005/2005JC002922.shtml http://www.nurp.noaa.gov/Spotlight/ArcticIce.htm
(The recent work
of Huybers and Langmuir suggests that on
ice - age time scales, the loading and unloading
of the planet by
ice growth / shrinkage and
sea - level fall / rise may weakly organize the volcanoes, but not a lot, and with nothing interesting for our time.)
Sea ice is critical for polar marine ecosystems in at least two important ways: (1) it provides a habitat for photosynthetic algae and nursery ground for invertebrates and fish during times when the water column does not support phytoplankton
growth; and (2) as the
ice melts, releasing organisms into the surface water [3], a shallow mixed layer forms which fosters large
ice - edge blooms important to the overall productivity
of polar
seas.
Land - based
ice in glaciers and
ice - sheets will keep contributing to
sea level rise as long as melting exceeds snowfall accumulation; stopping the
growth of temperature would not stop the net melting.
>... there are still ways
of discovering the temperatures
of past centuries,... tree rings... Core samples from drilling in
ice fields... historical reconstruction... coral
growth, isotope data from
sea floor sediment, and insects, all
of which point to a very warm climate in medieval times.
In essence Zhang proposes that the warming factors reduce the
growth of sea ice which reduces ocean overturning allowing increased stratification
of the ocean which in turn reduces ocean heat flux available to melt
ice.
This residual is a logical consequence
of there still being
sea ice growth in the winter, and a significant area
of ice at the end
of the summer.
ScienceDaily (Oct. 3, 2008)-- Arctic
sea ice extent during the 2008 melt season dropped to the second - lowest level since satellite measurements began in 1979, reaching the lowest point in its annual cycle of melt and growth on Sept. 14, according to researchers at the University of Colorado at Boulder's National Snow and Ice Data Center.&raq
ice extent during the 2008 melt season dropped to the second - lowest level since satellite measurements began in 1979, reaching the lowest point in its annual cycle
of melt and
growth on Sept. 14, according to researchers at the University
of Colorado at Boulder's National Snow and
Ice Data Center.&raq
Ice Data Center.»
But noted that you accounted for a bunch
of things way back then, like delays in warming effect, counter-intuitive
growth of sea ice, etc..
, lightning related insurance claims, Lyme disease, Malaria, malnutrition, Maple syrup shortage, marine diseases, marine food chain decimated, Meaching (end
of the world), megacryometeors, Melanoma, methane burps, melting permafrost, migration, microbes to decompose soil carbon more rapidly, more bad air days, more research needed, mountains break up, mudslides, next
ice age, Nile delta damaged, no effect in India, nuclear plants bloom, ocean acidification, outdoor hockey threatened, oyster diseases, ozone loss, ozone repair slowed, ozone rise, pests increase, plankton blooms, plankton loss, plant viruses, polar tours scrapped, psychosocial disturbances, railroad tracks deformed, rainfall increase, rainfall reduction, refugees, release
of ancient frozen viruses, resorts disappear, rift on Capitol Hill, rivers raised, rivers dry up, rockfalls, rocky peaks crack apart, Ross river disease, salinity reduction, Salmonella,
sea level rise, sex change, ski resorts threatened, smog, snowfall increase, snowfall reduction, societal collapse, songbirds change eating habits, sour grapes, spiders invade Scotland, squid population explosion, spectacular orchids, tectonic plate movement, ticks move northward (Sweden), tides rise, tree beetle attacks, tree foliage increase (UK), tree
growth slowed, trees less colourful, trees more colourful, tropics expansion, tsunamis, Venice flooded, volcanic eruptions, walrus pups orphaned, wars over water, water bills double, water supply unreliability, water scarcity (20 %
of increase), weeds, West Nile fever, whales move north, wheat yields crushed in Australia, white Christmas dream ends, wildfires, wine — harm to Australian industry, wine industry damage (California), wine industry disaster (US), wine — more English, wine — no more French, wind shift, winters in Britain colder, wolves eat more moose, wolves eat less, workers laid off, World bankruptcy, World in crisis, Yellow fever.
The interaction
of ocean and atmosphere is a complicated one, with a number
of factors at work that influence the
growth of sea ice.
The maps suggests
growth of parts
of coastal East Antarctica, little change in the interior and
ice mass loss in West Antarctica (basins 18 - 27 and 1) focused on the Amundsen
Sea Coast region (basins 20 - 23).
The resulting global cooling, allowed the
growth of Arctic
ice caps, glaciers and
sea ice.
The one exception to this pattern
of accelerating
ice loss is Antarctic
sea ice which has shown long term
growth since satellites began measurements in 1979.
Once the
growth of Little
Ice Age glaciers stopped, and groundwater base flow was no longer offset, we would expect
sea levels to rise as witnessed during the 19th and 20th centuries.
His research includes studies
of the
growth, evolution and properties
of sea ice in the Arctic and Antarctic.
Antarctic
sea ice coverage is slightly above average and the
growth varies from one part
of Antarctica to another.
When there is evidence for the
growth of a large
ice sheet on Antarctica or on Greenland or the
growth of sea ice in the Arctic Ocean, we see evidence for a dramatic change in carbon dioxide levels over the last 20 million years.
Perhaps the
ice extent in summer is conditioned by the rapid
growth rate and thickness
of the newly expansive regions
of first - year
sea ice?
Thickness surveys and drifting buoys that are part
of the Arctic Observing Network (AON) suggest that much
of the
growth of first - year
sea ice in the Pacific sector approaches an end -
of - season thickness
of around 1.7 m, independent
of the starting time
of freeze - up in the fall (H. Eicken, personal communication).
This year we have record levels
of Arctic
ice growth, and record Antarctic
sea ice.
The cryosphere derives its importance to the climate system from a variety
of effects, including its high reflectivity (albedo) for solar radiation, its low thermal conductivity, its large thermal inertia, its potential for affecting ocean circulation (through exchange
of freshwater and heat) and atmospheric circulation (through topographic changes), its large potential for affecting
sea level (through
growth and melt
of land
ice), and its potential for affecting greenhouse gases (through changes in permafrost)(Chapter 4).
So NSIDC, Tamino, Nick Stokes, Steve Mosher, should prepare themselves for more years
of no Arctic
sea ice melting and even Arctic
sea ice growth if AMO decides to turn negative.
Dozens
of autonomous buoys deployed on the
sea ice as far as 20 kilometers away from the vessel measured the
growth and melting
of sea ice to give indications
of ocean heat flux on a larger scale.
This net loss
of ice has occurred globally, and no, the
growth in Antarctic
sea ice has not come even close to making up for net
ice mass loss globally.
This partly explains why the seasonal loss and
growth of Antarctic
sea ice is more dramatic than its Arctic counterpart.
(Only three mentions
of ice — in a model — yet the
growth of the Antarctic
sea ice is a factor.