Measurements of methane and nitrous oxide in the Earth's atmosphere taken by the National Oceanic and Atmospheric Administration's (NOAA) Earth Systems Research Laboratories (ESRL) show little change since worldwide shutdowns have taken place. The measurements taken from the Mauna Loa Observatory in Hawaii show a steady increase from 2019 to 2020 despite a distinct halt in the production of greenhouse gases—methane, nitrous oxide, and carbon dioxide—on a global scale since May. The increase applies to both averaged and trend data compiled by NOAA.
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