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Two Maps Show Greenland’s Sudden Melt Season Onset

Two Maps Show Greenland’s Sudden Melt Season Onset

It appears that Greenland’s melt season is making up for lost time. After a cool spring kept Greenland’s massive ice sheet mostly solid, a (comparatively) warm late June and early July have turned half the ice sheet’s surface into liquid, well outside the range of normal for this time of year. Despite the ice sheet’s remote location, its slushy… Read More

2015 Arctic Sea Ice: How Low Will It Go?

2015 Arctic Sea Ice: How Low Will It Go?

The Fourth of July weekend wasn’t just about fireworks and cookouts, it also marked the end of a key period of summer melt in the Arctic that can determine how low sea ice goes for the year. The floating ice cap has been on a steady downward trajectory for decades, thanks to global warming, and in recent years it has hit record lows with the added … Read More

Rapidly Acidifying Arctic Ocean Threatens Species

Rapidly Acidifying Arctic Ocean Threatens Species

Parts of the Arctic Ocean within the next 10 years could reach levels of ocean acidification that would threaten the ability of marine animals to form shells, new research suggests. Die-offs in such creatures could have ramifications up the food chain in areas that include some of the most productive fisheries in the world and provide a preview… Read More

Alaska’s Glaciers Seen as Major Source of Sea Level Rise

Alaska’s Glaciers Seen as Major Source of Sea Level Rise

The ice that tumbles into the ocean along Alaska’s coastline often makes for dramatic images that show one of the ravages of climate change – melting tidewater glaciers that contribute to sea level rise. But a new study finds that far more meltwater is flowing into the sea from a similar, if less frequently photographed source – inland glaciers. … Read More

Bad News Keeps Flowing From Antarctica

Bad News Keeps Flowing From Antarctica

The massive shelves of ice that ring Antarctica have been shrinking over the past couple of decades, and that could have grave implications for sea level rise. It’s not the ice shelves themselves that pose a problem: they’re mostly afloat, so when they melt or dump massive icebergs, it doesn’t affect water levels any more than melting ice cubes … Read More

Arctic Ice Melting Faster and Earlier With Dire Results

Arctic Ice Melting Faster and Earlier With Dire Results

There was less ice in the Arctic this winter than in any other winter during the satellite era, National Oceanic and Atmospheric Administration scientists said on Tuesday. The announcement was consistent with previous predictions that the Arctic would have entirely ice-free summers by 2040, they said in a briefing to the media on the state of clima… Read More

The Surprising Link Between Fjords and Carbon

The Surprising Link Between Fjords and Carbon

The magnificent, steep-sided fjords that slice deeply into the coastlines of New Zealand, Norway and Alaska are hugely popular attractions for tourists. But they may be surprisingly important to the Earth’s climate system as well. While fjords make up just one tenth of one percent of the oceans’ surface area they account for about 11 percent … Read More

Blooming Algae Could Accelerate Arctic Warming

Blooming Algae Could Accelerate Arctic Warming

Scientists already know that receding sea ice allows solar energy to warm exposed water rather than reflect back into space, but blooms of algae could make matters even worse. By the end of the century, researchers say, the blooms could lead Arctic warming to increase by as much as 20 percent.… Read More

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Fall Temperature Trends The big picture is clear: Overall, fall is warming across the U.S, 0.46F per decade since 1970.

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