Sentences with phrase «in global sea ice»

Not subject to urban heat island effects, the trend in global sea ice extent is a primary indicator of climate change, or the lack thereof.

this is a great site (cryosphere today) which documents the variation in global sea ice.

Observed hemispheric asymmetry in global sea ice changes.

Notice that the decrease in Arctic sea ice appears balanced by the increase in Antarctic sea ice, which means there is NO DECREASE in global sea ice over this period.

The last La Nina ended 15 months ago, yet we've had a recovery in global sea ice area and no increase in surface warming.

The surprising fact (to me at least) that the difference in global sea ice between two single dates 30 years apart can change so radically in such a short space of time, implies that it is not a particularly good measure of long term climate change.

Because of that volatility in Antarctica, it's too soon to say whether this year's collapse in global sea ice is an aberration.

Not exact matches

Nearly 50 years later, problems like rising global temperatures, melting Arctic sea ice, and the demographics putting pressure on food production and resources like forests, can make you want to scream or bury your head in the sand.

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.

If so, the interaction between hydrofracturing and ice - cliff collapse could drive global sea level much higher than projected in the Intergovernmental Panel on Climate Change (IPCC)'s 2013 assessment report and in a 2014 study led by Kopp.

«Ice loss from this part of West Antarctica is already making a significant contribution to sea - level rise — around 1 mm per decade, and is actually one of the largest uncertainties in global sea - level rise predictions.

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.

Scientists from Rice University and Texas A&M University - Corpus Christi's Harte Research Institute for Gulf of Mexico Studies have discovered that Earth's sea level did not rise steadily but rather in sharp, punctuated bursts when the planet's glaciers melted during the period of global warming at the close of the last ice age.

As the Arctic summers are getting warmer we may see an acceleration of global warming, because reduced sea ice in the Arctic will remove less CO2 from the atmosphere, Danish scientists report.

It concludes that the two degrees Celsius global warming target agreed on in the most recent UN Climate Conference will not allow Arctic summer sea ice to survive.

Scientists now believe that the projected decreases in the polar sea ice due to global warming will have a significant negative impact or even lead to extinction of this species within this century.

Evidence of past glacial advance and retreat is also more easily observed in the Dry Valleys, providing a window into the past behavior of the vast Antarctic ice sheets and their influence on global sea levels.

«If our results are representative, then sea ice plays a greater role than expected, and we should take this into account in future global CO2 budgets,» says Dorte Haubjerg Søgaard, PhD Fellow, Nordic Center for Earth Evolution, University of Southern Denmark and the Greenland Institute of Natural Resources, Nuuk.

Due to global warming, larger and larger areas of sea ice melt in the summer and when sea ice freezes over in the winter it is thinner and more reduced.

Consequently we will see increase in the ice - sheet contribution to global sea - level rise.

Melting sea ice has accelerated warming in the Arctic, which in recent decades has warmed twice as quickly as the global average, according to a new study.

In this dark place, so far from human eyes, significant environmental change may already be underway, which could impact how quickly the ice sheet slips into the sea and, subsequently, how quickly global sea levels may rise.

In a new paper, Hansen and colleagues warn that the current international plan to limit global warming isn't going to be nearly enough to avert disasters like runaway ice - sheet melting and consequent sea - level rise.

Since 1995, researchers found that Greenland has lost a total of about 4,000 gigatons of ice, which has become the biggest single contributor to the rise in global sea levels.

It also reviews recent scientific literature on «worst - case» global average sea - level projections and on the potential for rapid ice melt in Greenland and Antarctica.

If there's anything more complicated than the global forces of thermal expansion, ice sheet melt and ocean circulation that contribute to worldwide sea - level rise, it might be the forces of real estate speculation and the race - based historical housing patterns that color present - day gentrification in Miami.

Since Larsen C's ice already floats in the ocean, the big break - off won't immediately raise global sea levels.

This is reassuring, because if the ice cap did melt completely in the near future, it would raise global sea levels by 60 metres.

If both ice sheets melted — a process already underway at an alarming rate in West Antarctica — global sea levels would rise 200 feet.

In turn, sharing scientific and indigenous predictive capabilities is meant to improve coastal ice interpretation and prediction based on satellite imagery, assist communities refining public safety measures, and to add local sea ice to parameters used in assessing global climate change in the ArctiIn turn, sharing scientific and indigenous predictive capabilities is meant to improve coastal ice interpretation and prediction based on satellite imagery, assist communities refining public safety measures, and to add local sea ice to parameters used in assessing global climate change in the Arctiin assessing global climate change in the Arctiin the Arctic.

In comparison, global sea levels are rising by about 3 millimetres a year, and a recent study estimated that one - third of that comes from ice loss in Antarctica and GreenlanIn comparison, global sea levels are rising by about 3 millimetres a year, and a recent study estimated that one - third of that comes from ice loss in Antarctica and Greenlanin Antarctica and Greenland.

«When we look forward several decades, climate models predict such profound loss of Arctic sea ice that there's little doubt this will negatively affect polar bears throughout much of their range, because of their critical dependence on sea ice,» said Kristin Laidre, a researcher at the University of Washington's Polar Science Center in Seattle and co-author of a study on projections of the global polar bear population.

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.»

It could lead to a massive increase in the rate of ice sheet melt, with direct consequences for global sea level rise.»

An unprecedented analysis of North Pacific ocean circulation over the past 1.2 million years has found that sea ice formation in coastal regions is a key driver of deep ocean circulation, influencing climate on regional and global scales.

The global climate models do a good job of simulating the process of sea ice formation over large areas in the open ocean.

The National Science Foundation - funded study appears in the journal Proceedings of the National Academy of Sciences 45 years after atmospheric scientists Mikhail Budyko and William Sellers hypothesized that the Arctic would amplify global warming as sea ice melted.

«Warming greater than 2 degrees Celsius above 19th - century levels is projected to be disruptive, reducing global agricultural productivity, causing widespread loss of biodiversity and — if sustained over centuries — melting much of the Greenland ice sheet with ensuing rise in sea levels of several meters,» the AGU declares in its first statement in four years on «Human Impacts on Climate.»

In the San Francisco Bay area, sea level rise alone could inundate an area of between 50 and 410 square kilometres by 2100, depending both on how much action is taken to limit further global warming and how fast the polar ice sheets melt.

In a study published in the actual volume of Nature Communications, geo - and climate researchers at the Alfred - Wegener Institute, Helmholtz Centre for Polar - and Marine Research (AWI) show that, in the course of our planet's history, summertime sea ice was to be found in the central Arctic in periods characterised by higher global temperatures — but less CO2 — than todaIn a study published in the actual volume of Nature Communications, geo - and climate researchers at the Alfred - Wegener Institute, Helmholtz Centre for Polar - and Marine Research (AWI) show that, in the course of our planet's history, summertime sea ice was to be found in the central Arctic in periods characterised by higher global temperatures — but less CO2 — than todain the actual volume of Nature Communications, geo - and climate researchers at the Alfred - Wegener Institute, Helmholtz Centre for Polar - and Marine Research (AWI) show that, in the course of our planet's history, summertime sea ice was to be found in the central Arctic in periods characterised by higher global temperatures — but less CO2 — than todain the course of our planet's history, summertime sea ice was to be found in the central Arctic in periods characterised by higher global temperatures — but less CO2 — than todain the central Arctic in periods characterised by higher global temperatures — but less CO2 — than todain periods characterised by higher global temperatures — but less CO2 — than today.

«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.

Coastal sea ice formation takes place on relatively small scales, however, and is not captured well in global climate models, according to scientists at the University of California, Santa Cruz, who conducted the study.

The predictable retreat of Arctic sea ice under global warming presents one last opportunity to adopt effective marine management practices before, rather than after, an ocean is opened up to development, says Lisa Speer of NRDC in New York City, who co-authored the workshop report.

What's happening in the Arctic would be impossible without a century of global warming causing a long - term decline in sea ice levels — but it is actually a short - term weather event.

What they found was that local destabilization of the Amundsen Sea region of West Antarctica ultimately causes the entire ice sheet to fall into the ocean over several centuries to several thousands of years, gradually adding 3 meters to global sea levels, they report online today in the Proceedings of the National Academy of SciencSea region of West Antarctica ultimately causes the entire ice sheet to fall into the ocean over several centuries to several thousands of years, gradually adding 3 meters to global sea levels, they report online today in the Proceedings of the National Academy of Sciencsea levels, they report online today in the Proceedings of the National Academy of Sciences.

When the planet's big ice sheets collapsed at the end of the last ice age, their melting caused global sea levels to rise as much as 100 meters in roughly 10,000 years, which is fast in geological time, Mann noted.

However, the simulations indicate that the sea - ice driven precipitation changes resemble the global rainfall patterns observed during that drought, leaving the possibility that Arctic sea - ice loss could have played a role in the recent drought.

Since the 1970s the northern polar region has warmed faster than global averages by a factor or two or more, in a process of «Arctic amplification» which is linked to a drastic reduction in sea ice.

A warming global climate may favor species that don't intimately depend on ice that floats on the sea to hunt or are more versatile in what they can eat as well as those able to thrive in higher temperatures.