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Climate Change Updates

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Sahara’s ‘Godzilla’ Dust Storm Triggered by Arctic Warming?
An enormous dust cloud dubbed “Godzilla” that surged over the Sahara Desert in June and then blew toward the U.S. may have reached its record-breaking size and density due to warming in the Arctic.

Dramatic Arctic Transformation May Be Permanent
From vanishing sea ice to blistering air temperatures to zombie fires, climate change is reshaping the Arctic. And that transformation may be permanent, researchers said on Tuesday (Dec. 8) at the annual meeting of the American Geophysical Union (AGU).

How Will Sea Levels Change With Climate Change?
Sea level rise is not a new phenomenon. For much of the 20th century, the global mean sea level has been inching upward — about 0.05 inches (1.4 millimeters) per year, according to the United Nations’ Intergovernmental Panel on Climate Change. Global mean sea level is an average of all the seas covering the Earth. But during the last two decades, the rate has more than doubled. From 2005 to 2015, sea levels rose by 0.1 inches (3.6 mm) per year.

Moon Could Unlock Huge Arctic Methane Cache
The moon could be affecting how much methane is released from the Arctic Ocean seafloor, a new study finds The tides, which are controlled by the moon, affect how much methane is released from seafloor sediments: Low tides mean less pressure and more methane released, while high tides create more pressure, and therefore less methane emission.

World’s Largest Iceberg Has Broken in Two
The world’s largest iceberg has just broken in two, with a chunk of ice about the size of Queens and the Bronx combined splitting off from the main berg. The mammoth A-68a berg first split from Antarctica’s Larsen C ice shelf in 2017, Live Science previously reported. The giant hunk of ice has been drifting ponderously northward ever since. From the water, A-68a would look a bit like a moving island, with cliffs rising up to 100 feet (30 m) above sea level. As recently as April, it measured 2,000 square miles (5,100 square kilometers), or about as big as three Houstons plus one Chicago (or 1.7 Rhode Islands).

‘Zombie’ Greenhouse Gas Lurks in Permafrost Beneath the Arctic Ocean
Millions of tons of organic carbon and methane beneath the Arctic Ocean thaw out and ooze to the surface each year. And climate change could speed up this release of greenhouse gases, new research suggests.

10 Steamy Signs That Climate Change is Speeding Up
As the world turned its eyes to a dire pandemic, another global catastrophe was not-so-quietly gaining steam: Climate change has been simmering since the Industrial Revolution, but 2020 was a year that really drove home how fast it’s accelerating. We blazed past ominous milestones that were supposed to take decades to arrive, broke records every month, and watched the frozen North melt even faster than anticipated. From record wildfires to a bumper crop of hurricanes to melting poles, here are some of the biggest signs in 2020 that climate change is speeding up.

US Could Reach ‘Net-Zero’ Carbon by 2050. Here’s How.
The U.S. can cut its carbon output to zero by the middle of the 21st century, according to a sweeping new Princeton University study. In such a “net-zero” scenario, the American carbon output would be equal to or lesser to the carbon pulled out of the atmosphere on U.S. soil. But to get there, the country must start now.

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