Sentences with phrase «widespread melting of»

As Media Matters has noted, the IPCC's 2007 «Synthesis Report» concluded that» [w] arming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice and rising global average sea level» and that» [m] ost of the observed increase in global average temperatures since the mid-20th century is very likely [defined in the report as a» > 90 %» probability] due to the observed increase in anthropogenic [human - caused] GHG [greenhouse gas] concentrations.»

The coldest reaches of the Arctic on land were once thought to be at least temporarily shielded from a major — and worrisome — effect of a warming climate: widespread melting of permafrost.

An increase of this magnitude could trigger widespread melting of the permafrost in Arctic regions, with unpredictable results.»

(1) there is established scientific concern over warming of the climate system based upon evidence from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising global average sea level;

Further evidence for forced changes arises from widespread melting of the cryosphere, increases in water vapour in the atmosphere and changes in top - of - the atmosphere radiation that are consistent with changes in forcing.

The Fourth Assessment Report finds that «Warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising mean sea level.

ocean temperatures, widespread melting of snow and ice, and rising global average sea level,» are three disjoint sources of confirmation that give us reliable enough trend information to establish consilience about what we may say after 2005 on HadCRUT4.

Warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising global average sea level.

The decreasing trend in global snow cover and widespread melting of glaciers is consistent with a widespread warming.

The Fourth Assessment Report finds that «Warming of the climate system is unequivocal, as is now evident from observations of increases in global average air and ocean temperatures, widespread melting of snow and ice, and rising mean sea level.

It is clear that the 1C temperature rise over pre-industrial levels that we have seen so far has triggered a whole range of effects including widespread melting of mountain glaciers, significant sea level rise, devastating droughts, and flooding in various parts of the world.

Maximum temperature extremes were also associated with widespread melting of the Greenland ice sheet.

Trump's stance on the environment contradicts thousands of scientists and decades of research, which has linked many observable changes in climate, including rising air and ocean temperatures, shrinking glaciers, and widespread melting of snow and ice, to an increase in greenhouse gas emissions from human activities.

Not exact matches

Instead, much of the work on permafrost degradation over the past few decades has focused on the widespread, slow melting of the icy soils from the top down, says Vladimir Romanovsky, a geophysicist at the University of Alaska, Fairbanks, who was not involved in the new study.

That widespread melting leaves huge swaths of dark ocean water that absorbs more heat from the sun than the white, reflective sea ice it replaces.

Their optimistic goal: keep global warming below 1.5 degrees Celsius to avoid doomsday scenarios of rising seas, widespread droughts and melting ice.

The discovery of widespread melting came after hydrologist Åsa K. Rennermalm of Rutgers University, New Jersey, noticed that stream runoffs at her field site in west Greenland were unusually heavy.

But, as scientists including National Oceanic and Atmospheric Administration (NOAA) Administrator Jane Lubchenco said today at a press conference at the American Geophysical Union's fall meeting, record - setting melting happened anyway: record snow melt, record sea ice minimum, melting even at the top of the Greenland ice sheet (in what was once called the «dry snow zone»), and widespread warming of permafrost.

The widespread melting across the Greenland ice sheet was one of the most dramatic changes, said Jason Box of the Byrd Polar Research Center at Ohio State University in Columbus.

«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.»

The authors infer — from the way modern photosynthetic organisms react to changing marine arsenic concentrations — that this event was due to widespread ocean toxicity resulting from the release of toxic elements into the oceans when the ice melted.

The vision is enticing: if bodyfat can simply be melted away with new active ingredients, then this could also prevent the widespread consequences of obesity — such as joint problems, diabetes and cardiovascular diseases.

Since IPCC (2001) the cryosphere has undergone significant changes, such as the substantial retreat of arctic sea ice, especially in summer; the continued shrinking of mountain glaciers; the decrease in the extent of snow cover and seasonally frozen ground, particularly in spring; the earlier breakup of river and lake ice; and widespread thinning of antarctic ice shelves along the Amundsen Sea coast, indicating increased basal melting due to increased ocean heat fluxes in the cavities below the ice shelves.

Melting glaciers turning land to bog was behind widespread extinctions of animals like the giant sloth and woolly mammoth between 15,000 and 11,000 years ago.

I like the fact that the authors and other experts cautioned us to not conclude «more widespread surface melting could not eventually destabilize vast areas of the world's second - largest ice storehouse».

The trait, he proposed, comes to the surface when such people confront strong messaging on the need for emissions reductions amid enduringly murky science on what's driving some particular extreme environmental phenomenon in the world — whether a brief period of widespread melting on the Greenland ice sheet, a potent drought, a tornado outbreak or the extreme event of the moment, the hybrid nor» easter / hurricane known on Twitter as #Frankenstorm.

And, of course, these possible widespread methane gas eruptions are not the only change occurring in the Arctic, as permafrost melts and decomposes.

Even after decades of increasingly dire warnings, the US has still not passed comprehensive federal legislation to combat global warming; Canada has abandoned past pledges in order to exploit its emissions - heavy tar sands; China continues to depend on coal for its energy production; Indonesia's effort to stem widespread deforestation is facing stiff resistance from industry; Europe is mulling pulling back on its more ambitious cuts if other nations do not join it; northern nations are scrambling to exploit the melting Arctic for untapped oil and gas reserves; and fossil fuels continue to be subsidized worldwide to the tune of $ 400 billion.

In May 2007, a team of scientists from NASA and the University of Colorado reported satellite data showing widespread snow - melt on the interior of the Antarctic ice sheet over an area the size of California.

Snowfall varies across the region, comprising less than 10 % of total precipitation in the south, to more than half in the north, with as much as two inches of water available in the snowpack at the beginning of spring melt in the northern reaches of the river basins.81 When this amount of snowmelt is combined with heavy rainfall, the resulting flooding can be widespread and catastrophic (see «Cedar Rapids: A Tale of Vulnerability and Response»).82 Historical observations indicate declines in the frequency of high magnitude snowfall years over much of the Midwest, 83 but an increase in lake effect snowfall.61 These divergent trends and their inverse relationships with air temperatures make overall projections of regional impacts of the associated snowmelt extremely difficult.

These tipping points could be ice sheets on Greenland and Antarctica melting permanently, global food shortages and widespread crop failures with more extreme weather, rising ocean temperatures and acidity reaching triggering a crash in global coral reef ecosystems, and warming oceans push the release of methane from the sea floor, which could lead to runaway climate change, etc..

As reported by Don Perovich aboard the Healy, there is widespread refreezing of surface ice meltwater as it runs through, then underneath, the ice and comes into contact with colder, more saline seawater, adding on layers of newly formed ice to the bottom of floes during the melt season.

Field observations and a drifting buoy tracking through the region also reveal that widespread refreezing of surface ice meltwater as it comes into contact with colder, more saline seawater, has added ice layers to the bottom of floes, slowing down thinning and melt of the ice cover.

True to climategate form, as the IPCC chapters continue to be leaked out, we can see the widespread attempt to ignore O [Donnell et al.] 10 and use the incorrect warming caused by math errors of S09 to claim that the Antarctic is in danger of melting — even though it is not.»

«With both the frequency of forest fires and warmer temperatures predicted to increase with climate change, widespread melt events are likely to happen much more frequently in the future,» Keegan says.

Some are predictable, such as a widespread growth of shrubs across vast former tundra areas shedding their leaves to be windblown into the increasingly prevalent themokarst melt pools and land - slip dam lakes, where they'll rot anaerobically to release additional methane.

The new study found that if humankind's emissions of greenhouse gases continue unabated, permafrost in the coldest Arctic areas will experience widespread melting during this century — not centuries hence, as previously thought.

Those satellites images revealed widespread melt ponds not just at Cabinet Inlet, but on other parts of the ice shelf.

The Wired magazine article notes that Fox News described the study thusly: «Ice is expanding in much of Antarctica, contrary to the widespread public belief that global warming is melting the continental ice cap.»

Antarctica is gaining ice» [Ice] is expanding in much of Antarctica, contrary to the widespread public belief that global warming is melting the continental ice cap.»