Increasing Atmospheric Greenhouse Gas Concentration


According to the U.S. National Oceanic and Atmospheric Administration (NOAA), greenhouse gases continue to accumulate in the atmosphere.  Data, presented at the Cop27 climate talks, confirmed a new record for carbon dioxide of 415 ppm in mid-2021, according to the World Meteorological Organization (WMO).  NOAA reported on an upward trend in methane, a potent greenhouse gas.  In January 2002, the monthly mean value was 1,774 ppb.  This increased to 1,807 ppb in January 2012 and at the beginning of 2022, attained 1,908 ppb.