Sentences with phrase «sea ice levels in»

However, it appears that record - breaking sea ice levels in September 2007, the lowest to that date since 1979, had no discernible effect on Chukchi Sea polar bears, as confirmed by research up to 2016.

Mooney then explains why Will's focus on global sea ice levels in 1979 compared to today is misleading and unimportant (even though Will did get his facts wrong).

More climate stories ripped out of the back pages of the news: NASA says the record low Arctic sea ice levels in the last few years are the new normal.

Why is that we see a reccord high sea ice level in the Antarktic area when global temperature is rising.

Not exact matches

And in many, many cases — such as with ocean temperatures, rising sea levels, or ice shelf traveling speeds — scientists have recorded the data for decades, systematically, consistently, and with precision.

Two new studies show the current is slowly weakening, so it's not threatening an instant ice age, but rather colder weather in Europe, higher sea levels on the U.S. east coast, and depleted fisheries.

«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.

That half a degree is the difference between low - lying island states surviving, or Arctic ice remaining over the North Pole in summer, or increasing the risk of losing the Western Antarctic Ice Sheet or Greenland ice sheet (either one of which implies an eight - metre sea level risice remaining over the North Pole in summer, or increasing the risk of losing the Western Antarctic Ice Sheet or Greenland ice sheet (either one of which implies an eight - metre sea level risIce Sheet or Greenland ice sheet (either one of which implies an eight - metre sea level risice sheet (either one of which implies an eight - metre sea level rise.)

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.

Sea level has been rising slowly and inexorably since the end of the last ice age, and the rate has not accelerated in a warming climate.

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.

If one part of an ice shelf starts to thin, it can trigger rapid ice losses in other regions as much as 900 kilometres away — contributing to sea level rise

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.

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.

«Such warming could cause accelerated melting of glacial ice and a consequent increase in the sea level of several feet over the next century,» she told a meeting of the UK's Royal Society.

In this study, the research team excavated intertidal beach sediments on the shoreline of Calvert Island, British Columbia, where the sea level was two to three meters lower than it is today at the end of the last ice age.

This gives confidence in the predictions of the current generation of ice - sheet models which are used to forecast future ice loss from Antarctica and resulting sea - level rise.»

A large area of the Greenland ice sheet once considered stable is actually shedding massive amounts of ice, suggesting that future sea - level rise may be worse than expected, a team of scientists warned yesterday in a new study.

«Northern Hemisphere snow cover has decreased and Arctic Sea ice has been at record low levels in the past three years.»

«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.

As glaciologist Richard Alley of Pennsylvania State University notes: «The ice sheet is losing mass, this loss has increased over time, [and] it is not the dominant term in sea - level rise — but it matters.»

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.

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.

Both of those effects actually add up to lower sea levels in the area right around the former ice sheet, Mitrovica said.

The risk is real: we know that the West Antarctic ice sheet has collapsed many times in the past, raising sea levels at least 3 metres.

«That isn't even close,» Harvard University geophysicist Jerry Mitrovica told attendees yesterday at the annual meeting of AAAS (which publishes Science) in Washington, D.C. «Each ice sheet has its own pattern of sea level rise.»

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

They are derived from the idea that if the ice buttress for one of these big basins in East Antarctica were to go, you might get lots of ice sliding into the ocean very quickly, then sea level stabilizing after that most unbalanced ice is released.

The research, an analysis of sea salt sodium levels in mountain ice cores, finds that warming sea surface temperatures in the tropical Pacific Ocean have intensified the Aleutian Low pressure system that drives storm activity in the North Pacific.

During ice ages, which are mainly driven by rhythmic variations in Earth's orbit and spin that alter sunlight in the Northern Hemisphere, growing ice caps and glaciers trap so much frozen water on land that sea levels can drop a hundred meters or more.

Understanding what's causing the changes in the ice shelves «puts us a little bit closer to knowing what's going to happen to the grounded ice, which is what will ultimately affect sea - level rise,» Fricker said.

«If the West Antarctic ice sheet were to disappear, sea level would rise almost 19 feet; the ice in the Greenland ice sheet could add 24 feet to that; and the East Antarctic ice sheet could add yet another 170 feet to the level of the world's oceans: more than 213 feet in all.»

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.

Rising sea levels are certain in a warming world, but there is still substantial uncertainty about the extent of the increase in this century, mainly because the dynamics that could erode the ice sheets of Greenland and Antarctica remain poorly understood.

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.

A recent study by Robert Kopp at Princeton University (Nature, DOI: 10.1038 / nature08686) suggests sea levels were 8 to 9 metres higher than now during the last interglacial, in part due to the west Antarctic ice sheet melting.

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.

The combination of polar and nonpolar ice combined to raise sea levels by more than a millimeter in the last decade

These big ice sheets have frozen and melted many times in the past (producing ice ages with low sea levels and warm periods with high sea levels).

«This is, of course, an important process, because the ice that melts there ends up in the ocean and raises sea level.»

Scientists have been keeping a wary eye on Greenland's ice sheet, which holds in its frozen waters the equivalent of 7.4 meters of sea level rise.

The melting of a rather small ice volume on East Antarctica's shore could trigger a persistent ice discharge into the ocean, resulting in unstoppable sea - level rise for thousands of years to come.

The caves along Yucatán's Caribbean coast were not flooded until the worldwide rise in sea level after the ice age.

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.

So, what we're doing is we're creating a disequilibrium, and that could lead to very fast steps in the sea - level adjustment, in the ice volume adjustment.

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.