A First Look From NASA’s New Air Pollution Satellite
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When scientists switched on the instrument aboard a new satellite this summer, they got a preview of what will soon be the nation’s first continuous record of air pollution. The satellite will stay parked above North America and provide scientists with hourly daytime updates on air pollution nationwide. On Thursday, researchers released their first images, which show changes in nitrogen dioxide pollution over the United States over the course of a day. “It’s really exciting to see the instrument just working as expected,” said Xiong Liu, the deputy mission director and a physicist at the Center for Astrophysics run by Harvard University and the Smithsonian Institution. The satellite instrument, called TEMPO, will be able to measure several other pollutants as well. The images come during a summer of exceptionally bad air quality for the United States, with smoke from wildfires blanketing multiple cities and regions. But even before this summer, over the past decade or so, t