Greenhouse Gas Rises
The level of atmospheric carbon dioxide reached a new record high last month even as lockdowns and economic slowdowns during the coronavirus pandemic caused a sharp decline in greenhouse gas emissions.
Researchers at the Scripps Institution of Oceanography say they measured a monthly average high of 417 parts per million (ppm) during May at Hawaii’s Mauna Loa Observatory, up from 414.8 ppm a year earlier.
While global emissions dropped by 17% in April, Scripps scientists say much larger drops of 20% to 30% would be needed for an entire year to slow the growth of CO2 concentrations in the atmosphere.
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