Arctic clouds are more vulnerable to pollution than once thought
Air pollution could drive warming across the Arctic to a far greater extent than it does further south.
When Tim Garrett was a graduate student, his research brought him to what was then Barrow (and today Utqiagvik), the northernmost settlement in Alaska. Here, he boarded a plane to analyze how clouds affected the region below. Soaring through the air, he saw what he called “mystery plumes” — hazy air that looked like the smog found circling Los Angeles.
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