What Is Climate Change? (VIDEO)

Remember the difference between weather and climate? We know what happens when the weather changes—it’s obvious. Climate is another story. Read on. When it rains, you put on a raincoat or take your umbrella when you go out. It snows: time for high boots, a heavier coat, scarf, and warm gloves. And sunny days, well,

Climate Synthesis Sent To World Leaders By IPCC

Or do you? It’s time to pay attention to climate change now—as if it wasn’t back in 1800, when our current problems started. We all need to acknowledge that stunning industrial achievements can carry with them enormous unforeseen risks and challenges. Americans should take particular note, because on the whole we are wa-a-a-y behind on this.

National Climate Assessment Pulls No Punches About US Options

(All figures are from the 2014 National Climate Assessment draft.) Later today (Tuesday, May 6), at 8 a.m. EDT, the National Climate Assessment and Development Advisory Committee of experts meets by conference call to approve the final version of the Third National Climate Assessment. The gist of their message, as Suzanne Goldenberg of The Guardian

Stronger Snowfall Increases Ice Loss on Antarctica

  Here’s one of those science stories that seem to make no sense on the surface: according to new research Potsdam Institute for Climate Impact Research (PIK) increased snowfall over Antarctica as a result of climate change is actually countered by an increase in ice-flow to the ocean, up to three times. Thus, Antarctica’s contribution

Greenland Melting Record Broken with Four Weeks to Spare

Most years would see us waiting until early September before we received notification of any record of Greenlandic melting being broken or not, but this year we get the news early! Four weeks early, in fact, according to Marco Tedesco, assistant professor of Earth and atmospheric sciences at The City College of New York, who has

1.5 Million Years of Climate History Revealed

Scientists from the University of Cambridge Department of Earth Sciences have announced a major breakthrough in a decades old debate, the understanding of our planet’s climate machine, by reconstructing a highly accurate record of changes in ice volume and deep-ocean temperatures over the last 1.5 million years. The results of this study offer insights into a

Snowball Earth Saw Dynamic Ice Sheets

The snowball Earth hypothesis suggests that at some point approximately 715 million years ago our planet’s surface was totally – or as close as can be – covered in ice. Scientists had assumed that the glaciers covering the surface of the planet were stable, acting as a like for greenhouse gases that built up from

Antarctica at Risk from Human Activities

A new study has found that Antarctica is at great risk from human activities and other forces, and that environmental management is vital to protect the continent from human interests. The report showed that one of the longer-term concerns that could very well be the greatest threat to Antarctica is the potential for potential for oil,

Turning Antarctic Ice-Making Upside Down

New evidence provided by researchers flying over East Antarctica’s Gamburtsev Mountain’s between November 2008 to January 2009 has shown that there is ice forming at the bottom of the massive ice sheets that cover Antarctica, as well as on the top.

Melting Snow and Ice Warm Northern Hemisphere

The NASA Earth Observatory Image of the Day for the 24th of February showcases just how much energy is reflected back into space by the planet’s chryosphere, and how much that amount has decreased over the past 30 years. Mark Flanner of the University of Michigan and his colleagues have used satellite data to measure

Ghostly Sea Ice Surrounds Shikotan

NASA’s Image of the Day recently showcased an image of Ostrov Shikotan (or Shikotan-to), a volcanic island at the southern end of the Kuril chain, lying along the extreme southern edge of winter sea ice in the Northern Hemisphere. The Advanced Land Imager (ALI) on NASA’s Earth Observing-1 (EO-1)satellite captured this natural-color image of Shikotan on February

Record Melting in Greenland during 2010

2010 was an exceptional year for Greenland’s ice cap. Melting started early and stretched later in the year than usual. Little snow fell to replenish the losses. By the end of the season, much of southern Greenland had set a new record, with melting that lasted 50 days longer than average. This image was assembled

Climate Variation During Greenhouse Conditions

Researchers from the National Oceanography Centre in Southampton, England, have concluded that man-made global warming would probably not greatly change the influence had on the environment by inter-annual climate instances such as El Niño – Southern Oscillation (ENSO) or the Arctic Oscillation/ North Atlantic Oscillation (AO/ NAO). “Even in the warm Cretaceous period, the patterns

Map Illustrates Ice Sheet Shrinkage in Last Ice Age

Scientists from the University of Sheffield in England have for the first time brought to life through illustrated maps the shrinkage of the last British ice sheet as it shrunk during the last Ice Age, some 20,000 years ago. Led by the University of Sheffield’s Professor Chris Clark from the Department of Geography, the team

Map Illustrates Ice Sheet Shrinkage in Last Ice Age

Scientists from the University of Sheffield in England have for the first time brought to life through illustrated maps the shrinkage of the last British ice sheet as it shrunk during the last Ice Age, some 20,000 years ago. Led by the University of Sheffield’s Professor Chris Clark from the Department of Geography, the team

Fires Turn Alaskan Forests Into Carbon Producers

Forests are supposed to reduce carbon dioxide levels, but new research shows that the increase in fires and their tendency to burn larger areas of forest are converting forests into generators of carbon. “Since the proliferation of black spruce, Alaskan soils have acted as huge carbon sinks,” says Evan Kane, a research assistant professor in

Decreasing Sea Ice Risk for Pregnant Polar Bears

Researchers from the University of Alberta have shown a linkage between declining polar bear litter sizes and the declining sea ice. Using data collected since the 1990s, University of Alberta researchers Péter Molnár, from the Department of Biological Sciences and colleagues Andrew Derocher and Mark Lewis analysed how long the Hudson Bay is frozen over

Link Found Between Ancient Climate Change and Mass Extinction

New research led by researchers at the California Institute of Technology, Caltech, have discovered new details that support the idea that the mass extinction that took place approximately 450 million years ago, known as the Late Ordovician mass extinction, was linked to a cooling climate. During the Late Ordovician mass extinction more than 75 percent

Greenland Ice Sheet a Complex Mystery

With warming temperatures worldwide much speculation has been focused on how the Antarctic and Greenland ice-sheets will react. Hotter temperatures, in theory, should be bad for ice, but according to new research published in a letter in the 27 January edition of the journal Nature, hotter summers may not be as catastrophic for the Greenland

Loss of Arctic Reflectivity Intensifies Global Warming

A new study published online in the journal Nature Geoscience has uncovered data that shows over the past 30 years the decreases in the amount of snow and ice covering the Earth’s surface has decreased the reflective capacity of the Earth and exacerbated global warming much more than previous climate models had estimated. “The cryosphere

The Big Melt by National Geographic

I was sitting in my doctors waiting area this morning for a good hour – my doctor likes to be thorough, and slow – and I picked up one of the many un-current magazines that littered the coffee table in the middle of the room. It was the National Geographic special on Water published in

No Tipping Points in Polar Bears' Future

Much has been made about the possibility of tipping points in Earth’s environment; points of change which will not allow for any turning back no matter the effort put in. One of the most hyped of these was the Arctic and the possibility of a total loss of ice during summer. A new study led

Bering Sea Was Ice Free During Last Warm Period

The Bering Sea which finds its borders between Alaska and Russia was ice free during the last warm period in Earth’s climate history, the Pliocene Warm Period. Researchers drilled down 700 metres through rock at the bottom of the Bering Sea to acquire cores that contained sediments deposited during the Pliocene Warm Period which occurred

Gradual Warming Not Entirely Responsible for Greenland Icesheet Flow

A new study to come out of the University of British Columbia has shown that sudden changes in the amount of meltwater contributes more to the acceleration, and thus the eventual loss, of the Greenland ice sheet than the gradual increase of temperature, reversing previously thought views on the matter. “The conventional view has been

Multiyear Sea Ice Melting and Moving

A NASA analysis has for the first time measured the amount of multiyear ice that is lost from the Arctic each year as a result of melting. Multiyear ice is ice which makes it through more than one summer, making it ever more resistant to melting as the year’s progress. Or that used to be

Whales Great Biological Oceanographers

In a research paper to be published online Saturday in the Journal of Geophysical Research, Oceans, scientists report that Baffin Bay off West Greenland has continued to warm since wintertime ocean temperatures were last able to be measured in the early 2000s. And they used whales to measure the temperatures. Using sensors tagged to narwhals

Greenland Iceberg Breakup and Retreats

One of Greenland’s largest glaciers has suffered an abrupt breakup and retreat, losing a chunk approximately one-eighth the size of Manhattan Island. This is an extended article following up on a previous summary provided on Planetsave. The Jakobshavn Isbrae, also known as the Jakobshavn Glacier, lost a 7 square kilometre (2.7 square mile) section of

GRACE Acquires Accurate Picture of Greenland Ice Loss

Over the past few years we have sadly had to watch the Arctic ice concentrations drop significantly. Focus has been primarily centered on the Arctic Circle, but Greenland is also suffering from the increased global temperature. And now, thanks to researchers from the Delft University of Technology in the Netherlands and the Center for Space

Arctic Breakup Growing Each Week

Fears about the Arctic melting away during northern summers are proving to be far from unfounded, with the latest reports rolling in from Alaska and Greenland showing disturbing trends. New shipping lanes are opening up through what were once icy seas near Alaska, and glaciers that have so far withstood much of what the environment

Minimum Ice Record Unlikely for 2008

Over the past 12 months there has been one big fear lingering over the environmental community. It was a year ago that we were watching the Arctic ice disappearing at a tremendous rate, and saw it slip to its lowest levels in recorded history. Subsequently, we also saw the complete opening of the Northwest Passage

First Ice-Free Summer Ever Predicted for Arctic

I’ve covered the fate of the Arctic sea-ice for almost a year now, watching as report after report came out spelling doom for our northern pole. At the beginning of September last year I wrote a post called “Summer Ice to Disappear by 2030,” in which I quoted Dr. Mark Serreze, an Arctic specialist at

The Day After the Decade After Tomorrow

The movie The Day After Tomorrow saw the planet globally affected by the cessation of the ocean conveyor belt, or, more precisely known as the thermohaline circulation (THC). The northern hemisphere suffered massive drops in temperature, rises in sea level and a variety of other climate conditions. Putting aside the fantastical nature of the speed

Arctic and Antarctica Polar Opposites

There’s nothing quite as nice as a really catchy title that perfectly sums up your story. If you want to leave it at that, then you’ve probably got the whole of the story. However if you want to know just a bit more about how climate change is affecting our planet’s poles, then keep reading.

The Return of the… Arctic Ice

The Arctic ice has been at the center of environmental concern for a long time now. Ever since its ever-increasing decline in size came to a peak last year with the exposure of the fabled Northwest Passage, it has been the focus of scientific study and environmental bickering. Traditionally March marks the time of year

Depletion of Cold North Could Spark New Cold War

We’ve written often recently off the challenges soon to be faced by the continuing melt of the Arctic. Without a doubt, there are resources up there that someone will attempt to get their grubby little hands on. And, with the price of oil continuing to skyrocket with each passing month, if oil is found in

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