Sentences with phrase «polar oceans»
"Polar oceans" refers to the large bodies of saltwater that surround the Earth's polar regions, specifically the Arctic Ocean near the North Pole and the Southern Ocean near the South Pole. These oceans are located at the extreme northern and southern parts of the planet and are characterized by freezing cold temperatures and icy conditions. Full definition
The temperature that polar oceans freeze and thaw is the thermostat set point.
judithcurry.com
The model coheres with the predictions of several other Arctic specialists - namely Prof Peter Wadhams, head of polar ocean physics at Cambridge University and Prof Carlos Duarte, director of the Ocean Institute at the University of Western Australia - who see the disappearance of the Arctic sea ice in the summer of 2015 as likely.
Those are fast - flowing streams of ice,» said Martinson, who specializes in polar oceans.
Instead, the models consistently underestimated polar ocean warming in the Eocene.
Freshwater and ice flows into polar oceans have a direct impact on sea level and (in conjunction with the melt of sea ice) are important in maintaining the thermohaline circulation.
Right now, humanity in total is releasing 35 billion tons of CO2 into the atmosphere each year, so the 1,000 - billion - ton mark will be achieved before mid-century, and the north polar ocean ice will drop for the first time below 1 million square kilometres, leaving the Arctic almost entirely open sea.
Sea ice extent over polar oceans is a major critical parameter for understanding and forecasting oceanic circulation and earth climate...
«The anomaly for the North Polar region was +1.96 C, which is warm, but look at the North polar ocean anomaly....
While polar oceans make up only 10 percent of the global ocean area, they strongly influence Earth's activities.
In order for this global oceanic «conveyor belt» of heat to remain healthy, the Gulf Stream must transport water with high salinity (a result of tropical and sub-tropical summer evaporation) toward the North Atlantic, where it is cooled by the first winter outbreaks of cold air off the Greenland Ice Cap and the ice - covered polar oceans.
«We have been at record low levels,» says Emily Shuckburgh, deputy head of polar oceans at the British Antarctic Survey.
Using these data, researchers fine - tuned estimates from previous foram studies that captured polar conditions to show tropical oceans warmed substantially in the Eocene, but not as much as polar oceans.
With this correction factor in place, they investigated the degree to which polar oceans warmed more than the tropics, a feature of the climate system known as polar amplification.
Until recently, the Arctic's wall of sea ice made such polar ocean - hopping impossible.
As sea ice decreases dramatically across polar oceans, some scientists see a silver lining: The algal blooms that seem to thrive where ice has recently disappeared could damper climate change by trapping carbon in the deep ocean.
It may have been more like polar oceans on Earth, dotted with icebergs.
Hobart is a major gateway to the Antarctic and much of the ocean acidification research focus is on temperate to high - latitude polar ocean systems.
When Arctic researchers start investing in floating buoys to study polar ocean dynamics (instead of devices that sit on the sea ice), that's surely a sign of a sea change in conditions and thinking.
For more than two decades, meteorologists and oceanographers have repeatedly warned that runaway global warming, as a consequence of ever - greater combustion of fossil fuels, could bring about an ice - free polar ocean by about 2050.
The observations show that surface freshening of the southern polar ocean since the 1950s has considerably enhanced the salinity stratification.
Increased heat storage in the upper polar ocean leading to destabilization of shallow - water methane hydrates and massive CH4 / CO2 fluxes to the atmosphere would not be good news (I'm assuming I can skip a discussion of petroleum geology and the various routes of methane formation).
As the Arctic heats up faster than any other region on the planet, once - distinct boundaries between the frigid polar ocean and its warmer, neighboring oceans are beginning to blur, opening the gates to southern waters bearing foreign species, from phytoplankton to whales.
The team then used their dataset from the tropics to back - calculate the temperature and chemistry of polar oceans, relying on previous studies of forams that captured the conditions of those regions.
A new international analysis of marine fossils shows that warming of the polar oceans during the Eocene, a greenhouse period that provides a glimpse of Earth's potential future climate, was greater than previously thought.
Polar ice reflects more sunlight back into space than polar oceans or continents, helping to cool the overall climate.
The Intergovernmental Panel on Climate Change (IPCC) has forecasted summer ice cover in the polar ocean might disappear almost completely as early as 2050.
A Coast Guard without heavy icebreakers would face huge challenges in performing search - and - rescue missions, responding to oil spills, protecting U.S. fisheries or supporting navy operations in the polar oceans.
With this new understanding of the nature of the interactions between microorganisms in the polar ocean and the careful balance of competitive and cooperative behaviors that exist in this key ecosystem, Allen noted, researchers can work towards predicting how these relationships might change in the future.
But they also point to the power of Arctic warming — underway once again — to reshape the polar oceans.
Therefore, as CO2 increases in the atmosphere and goes into the water, the corrosiveness of water or the impact of the increasing acidity will appear first in the polar oceans and later in temperate and tropical ones.
ECCO model - data syntheses are being used to quantify the ocean's role in the global carbon cycle, to understand the recent evolution of the polar oceans, to monitor time - evolving heat, water, and chemical exchanges within and between different components of the Earth system, and for many other science applications.
The National Ocean and Atmospheric Administration said that the beluga whales ~ which are very intelligent ~ should exist in their natural habitat ~ the polar oceans ~ and not in an aquarium.
Tropical rainforest, polar ocean, the digestive tract of an insect or a mammal — they're all worm habitats.
«Basic chemistry tells us that within decades there may be serious trouble brewing in the polar oceans,» says James Orr, lead author and ocean modeler from the French Laboratoire des Sciences du Climat et de l'Environnement, who further adds, «unlike climate predictions, the uncertainties here are small.»