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Here’s How Much Arctic Sea Ice Has Melted Since the ‘80s

Here’s How Much Arctic Sea Ice Has Melted Since the ‘80s

Arctic sea ice has been melting at a steady clip this summer as it heads toward its annual low point. But a new chart shows that with nearly two months still left in the melt season, sea ice area is already below what would have been a yearly low in the 1980s. The comparison shows the clear long-term decline of Arctic sea ice fueled by the global … Read More

Arctic Heat Is Becoming More Common and Persistent

Arctic Heat Is Becoming More Common and Persistent

The Arctic is a bastion of cold, blustery weather. But in the latest sign of how quickly changes are happening, new research published this week shows that the Arctic has seen more frequent bouts of warm air and longer stretches of mild weather. The new findings show that while warm snaps have occurred even as far as back as the 1890s, a massive… Read More

The Arctic Has Been Crazy Warm All Year. This Is What It Means for Sea Ice

The Arctic Has Been Crazy Warm All Year. This Is What It Means for Sea Ice

Melt season has begun in earnest in the Arctic. Scientists will spend the next few months watching sea ice turn into open water until the ice pack hits its nadir in early fall. The vagaries of the weather and ocean currents will play a major role in determining where this year’s Arctic sea ice minimum ranks. But the steady drumbeat of climate… Read More

Sunnier Skies Driving Greenland Surface Melt

Sunnier Skies Driving Greenland Surface Melt

In the past two decades, the Greenland Ice Sheet has become the biggest single contributor to rising sea levels, mostly from melt across its vast surface. That surface melt is, in turn, driven mostly by an uptick in clear, sunny summer skies, not just rising air temperatures, a new study finds. What’s causing the decline in cloud cover isn’t yet… Read More

We Couldn’t Monitor Larsen C Without These Satellites

We Couldn’t Monitor Larsen C Without These Satellites

The Larsen C ice shelf is about to calve one of the biggest icebergs on record. The iceberg-to-be is hanging on by a thread, with just eight miles of solid ice standing in the way of a rift that’s spent years carving through the ice. Scientists can track the growth of the crack with precision during the summer season by flying over it, but even … Read More

Add Nitrous Oxide to the List of Permafrost Melt Concerns

Add Nitrous Oxide to the List of Permafrost Melt Concerns

Melting permafrost is among the biggest climate change issues. That’s because it contains billions of tons of carbon that, if it melts, will be released in the form of carbon dioxide and methane, an even more potent greenhouse gas. Less studied is what happens to the 67 billion tons of nitrogen stored in the currently frozen soil. New research … Read More

Arctic Stronghold of Seeds Flooded After Permafrost Melts

Arctic Stronghold of Seeds Flooded After Permafrost Melts

It was designed as an impregnable deep-freeze to protect the world’s most precious seeds from any global disaster and ensure humanity’s food supply forever. But the Global Seed Vault, buried in a mountain deep inside the Arctic circle, has been breached after global warming produced extraordinary temperatures over the winter, sending meltwater … Read More

Waves Rippled Through Greenland’s Ice. That’s Ominous

Waves Rippled Through Greenland’s Ice. That’s Ominous

On its surface, the Greenland ice sheet is a vast expanse of seemingly immovable ice. But beneath the monotonous stretch of white, scientists have discovered evidence of waves rippling through one of its outlet glaciers and roiling its innards. The waves, observed during the two most intense melt seasons on record, sent an unprecedented cascade of … Read More

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New York: July Days Over 90 Degrees By mid-century in New York, the sweltering heat of July 2010 may be thought of as cooler-than-average conditions

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