The first global, long-term satellite study of airborne ammonia gas has revealed "hot spots" of the pollutant over four of the world's most productive agricultural regions, according to the University of Maryland.
Using data from the National Aeronautics & Space Administration's (NASA) Atmospheric Infrared Sounder (AIRS) satellite instrument, the University of Maryland-led research team discovered steadily increasing ammonia concentrations from 2002 to 2016 over agricultural cente
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