Sentences with phrase «of changes in sea ice»

The potential for changes in cloud cover as a result of the changes in sea ice makes the evaluation of the actual forcing that may be realized quite uncertain, since such changes could overwhelm the forcing caused by the sea - ice loss itself, if the cloudi - ness increases in the summertime.

He also studies the impact of changes in sea ice on marine planktonic ecosystems by developing biophysical models such as the coupled Biology - Ice - Ocean Modeling and Assimilation System (BIOMAS).

Maslowski's recent, peer - reviewed work (Maslowski W., Clement Kinney J., Higgins M., Roberts A. (2012) «The Future of Arctic Sea Ice», The Annual Review of Earth and Planetary Sciences, 40: 625 - 654) emphasizes «the need for detailed analyses of changes in sea ice thickness and volume to determine the actual rate of melt of Arctic sea ice».

Peter Winsor of Woods Hole also provided more detail on why he sees no chance of changes in sea ice from the volcanism far below:

A diminishing albedo in Arctic sea ice can be considered both the cause and effect of changes in sea ice.

Here is the rate of change in sea ice extent filtered with 182 day gaussian to remove the annual cycle.

Not exact matches

Many of us who follow climate change news are aware that Greenland's ice is melting away, the Antarctic is cracking, and some Pacific islands are going underwater as seas rise — all because we are pumping more greenhouse gases into the thin layer of atmosphere in which we live.

«If you're trying to detect change in something, you need long and continuous uninterrupted records of things like the sea ice or sea level rise or Greenland's ice sheet,» Shepherd said.

We have much better — and more conclusive — evidence for climate change from more boring sources like global temperature averages, or the extent of global sea ice, or thousands of years» worth of C02 levels stored frozen in ice cores.

Colin... Your statement of «when ice ages cause dramatic changes in sea levels» is speculation of a possibility, not a scientifically accepted specific hypothesis.

One is changed environmental conditions for a discrete subpopulation of the original population, such as when ice ages cause dramatic changes in sea levels, cutting species into subgroups.

He said the idea to pack the water, conceived some few years back through his interaction with the charity, was necessitated by the fact that the accumulated ice was melting away into the sea and going waste due to climate change effects while some people were in need of water.

Understanding sea level change in relation to the mass balance of Greenland's and Antarctica's ice sheets is at the heart of the CReSIS mission.

This water pump can be put out of action or weakened by changes in the freshwater pressure, the ice sheet breaking up or shifting sea ice and this results in the increasing climatic variability.

Studying surging glaciers could also offer insights into grander - scale ice flows with global consequences: the movements of the ice sheets in Antarctica and Greenland, which can change abruptly, altering the ice discharges that affect sea level.

Many parts of the Arctic circle are becoming ever - more accessible thanks to improved technologies and a reduction in summer sea ice because of climate change.

The analysis shows that the critical timing of the sea ice break - up and sea ice freeze - up is changing in all areas in a direction that is harmful for polar bears.

«This study highlights the very sensitive nature of sea ice and snow to slight changes in the surface energy balance,» she said.

«The loss of sea ice in the Arctic and changes to heat storage will lead to changes in weather patterns that could bring extreme heat and cold events to the continental United States similar to those seen in recent years, and possibly even more intense.»

After further analysis of the data, the scientists found that although a strong El Niño changes wind patterns in West Antarctica in a way that promotes flow of warm ocean waters towards the ice shelves to increase melting from below, it also increases snowfall particularly along the Amundsen Sea sector.

Changes in flow patterns of warm Pacific Ocean air from the south were driving earlier spring snowmelt, while decreasing summer sea ice had the greatest influence on later onset of snowpack in the fall.

Its core is a flurry of recent research proposing that such extreme weather events in the midlatitudes are linked through the atmosphere with the effects of rapid climate change in the Arctic, such as dwindling sea ice.

There have been hints that there's more biological productivity in the Arctic Ocean than once suspected (perhaps helped along by climate change): In 2012, scientists reported seeing massive blooms of algae proliferating under the sea icin the Arctic Ocean than once suspected (perhaps helped along by climate change): In 2012, scientists reported seeing massive blooms of algae proliferating under the sea icIn 2012, scientists reported seeing massive blooms of algae proliferating under the sea ice.

«A clear understanding of energy use and energy storage will help improve models of how bears will respond to future changes in the sea ice.»

But the most recent report from the Intergovernmental Panel on Climate Change — the evidence of 600 climate researchers in 32 countries reporting changes to Earth's atmosphere, ice and seas — in 2013 stated «human influence on the climate system is clear.»

An international «Red List» of threatened species says that the polar bear is vulnerable to extinction because of a projected decline in its habitat linked to climate change that is melting sea ice in the Arctic.

Climate change and the resulting loss of sea ice during the summer have opened new hunting territory for the killer whales in the eastern Canadian Arctic, but scientists knew very little about these animals until they tapped into the traditional knowledge of Inuit hunters who shared unique firsthand descriptions of orca hunting tactics.

In late June, the U.S. Government Accountability Office released an assessment of how the consequences of climate change, from rising temperatures and sea levels to changes in precipitation patterns and sea ice cover, might impact the militarIn late June, the U.S. Government Accountability Office released an assessment of how the consequences of climate change, from rising temperatures and sea levels to changes in precipitation patterns and sea ice cover, might impact the militarin precipitation patterns and sea ice cover, might impact the military.

To better understand and anticipate changes in sea level rise, scientists have sought to quantify how much snow falls on the ice sheet in any given year, and where, since snow is the primary source of the ice sheet's mass.

Although CryoSat - 2 is designed to measure changes in the ice sheet elevation, these can be translated into horizontal motion at the grounding line using knowledge of the glacier and sea floor geometry and the Archimedes principle of buoyancy — which relates the thickness of floating ice to the height of its surface.

«So you see something in this one 4,000 - square - kilometer basin off the northeast coast of Venezuela, but you see similar changes in the Arabian Sea and in the tropical Pacific, and you can link it all back to changes seen in an ice sheet in Greenland.

The conclusion that limiting CO2 below 450 ppm will prevent warming beyond two degrees C is based on a conservative definition of climate sensitivity that considers only the so - called fast feedbacks in the climate system, such as changes in clouds, water vapor and melting sea ice.

The biggest changes were seen in West Antarctica, where more than a fifth of the ice sheet has retreated across the sea floor faster than the pace of deglaciation.

«Polar regions have been changing very rapidly, providing data for our projections on sea ice, snow cover, ice sheets and sea level rise,» says David Vaughan of the British Antarctic Survey in Cambridge, UK, the lead author of the cryosphere chapter.

The equatorial heat warmed the precincts of Antarctica in the Southern Hemisphere instead, shrinking the fringing sea ice and changing the circumpolar winds.

Climate changes that began ~ 17,700 years ago included a sudden poleward shift in westerly winds encircling Antarctica with corresponding changes in sea ice extent, ocean circulation, and ventilation of the deep ocean.

In addition, GOCE data could be used to help validate satellite altimetry measurements for an even clearer understanding of ice - sheet and sea - level change.

Furthermore, unraveling the causes of sea ice retreat should help us understand the mechanisms behind climate change on a global level, which is interrelated to the ice reduction in the Arctic ocean.»

The ongoing disappearance of sea ice in the Arctic from elevated temperatures is a factor to changes in atmospheric pressure that control jet streams of air, explained James Overland, an oceanographer of the National Oceanic and Atmospheric Administration, or NOAA.

In response, the U.S. Geological Survey began a study on changing Arctic ecosystems to better understand the consequences of lost permafrost and sea ice habitats, and the Interior Department established a Climate Science Center at the University of Alaska to specifically address Arctic issues.

Retreating sea ice in the Iceland and Greenland Seas may be changing the circulation of warm and cold water in the Atlantic Ocean, and could ultimately impact the climate in Europe, says a new study by an atmospheric physicist from the University of Toronto Mississauga (UTM) and his colleagues in Great Britain, Norway and the United States.

The research concludes that for other changes, such as regional warming and sea ice changes, the observations over the satellite - era since 1979 are not yet long enough for the signal of human - induced climate change to be clearly separated from the strong natural variability in the region

Dr Screen said: «The results of the computer model suggest that melting Arctic sea ice causes a change in the position of the jet stream and this could help to explain the recent wet summers we have seen.

Understanding Antarctic climate change is important not only because of the potential sea level rise locked up in the vast Antarctic ice sheet, but also the shift in the westerly winds has moved rainfall away from southern Australia.

So it would be nice for the climate models to have sufficient resolution to be able to predict the impact of changes in coastal sea ice.»

The results suggest that the impact of sea ice seems critical for the Arctic surface temperature changes, but the temperature trend elsewhere seems rather due mainly to changes in ocean surface temperatures and atmospheric variability.

But changes in sea level and ocean currents in the ice - covered regions of the Arctic and Antarctic in particular are very difficult to detect.

The outcomes of the study reveal the complexity of the processes shaping climate change in the Arctic and point to significant spatial and chronological variances in sea ice cover.

«Formation of coastal sea ice in North Pacific drives ocean circulation, climate: New understanding of changes in North Pacific ocean circulation over the past 1.2 million years could lead to better global climate models.»

A release of methane in the Arctic could speed the melting of sea ice and climate change with a cost to the global economy of up to $ 60 trillion over coming decades, according to a paper published in the journal Nature.