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

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For example, in a Chinese city of 10 million people, the average outdoor ambient NO 2 concentrations are 100.66 = 4.6 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.

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