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UMD-led study finds China’s SO2 emissions down 75% since 2007, India’s up 50%; India may now be the top SO2 emitter

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Although China and India remain the world’s largest consumers of coal, a new University of Maryland-led study found that China’s sulfur dioxide emissions fell by 75% since 2007, while India’s emissions increased by 50%. This work was supported by the NASA Earth Science Division Aura Science Team (Award No.

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NASA satellite images highlight US air quality improvement with reduction of NO2

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After ten years in orbit, the Ozone Monitoring Instrument (OMI) on NASA’s Aura satellite has been in orbit sufficiently long to show that people in major US cities are breathing less nitrogen dioxide. New NASA satellite images released this week demonstrate the reduction of air pollution across the US.

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Study finds power law scaling relationship between urban population and NO2 pollution

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The researchers used tropospheric NO 2 columns retrieved from the Ozone Monitoring Instrument (OMI) on NASA’s Aura satellite, which measures NO 2 throughout the atmosphere in the afternoon around the world. The variation is a reflection of regional differences such as industrial development, per capita emissions and geography.

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