Sentences with phrase «of sea ice growth»

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 loSea, have seen growth of sea ice — but others, like the Bellingshausen Sea west of the Antarctic Peninsula, have seen significant sea ice losea ice — but others, like the Bellingshausen Sea west of the Antarctic Peninsula, have seen significant sea ice loSea west of the Antarctic Peninsula, have seen significant sea ice losea 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.&raqice 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.&raqIce 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..
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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.
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