In China, coal rules cut sulfur emissions, but data manipulation is a concern

Enlarge / HUAINAN, CHINA – JUNE 16: A smokestack from a coal fired power plant is seen next to an abandoned former paper factory near the site of a large floating solar farm project under construction by the Sungrow Power Supply Company on a lake caused by a collapsed and flooded coal mine on June 16, 2017 in Huainan, Anhui province, China. (Photo by Kevin Frayer/Getty Images) (credit: Getty Images) In 2007, China required some coal power plants to install Continuous Emissions Monitoring Systems (CEMS) to track pollutants given off by those stations. In 2014, the Chinese government implemented tighter emissions standards for coal plants. Have those two regulations worked to reduce pollution? The answer is yes, but with a few caveats. In a paper published last week, researchers compared troves of CEMS readings to emissions readings from a NASA-owned satellite. They found that while Chinese regulations definitely lowered sulfur dioxide (SO2) levels, there's some evidence…

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