Global methane levels have hit an all-time high after what appears to be a near-record yearly atmospheric increase in the potent greenhouse gas. The concentration of methane in the Earth’s atmosphere reached nearly 1,875 parts per billion in 2019, up from the previous year’s 1,866 parts per billion, according to preliminary data collected by the National Oceanic and Atmospheric Administration (NOAA). If confirmed later this year, it would be the second highest increase in methane levels in more than two decades. The NOAA began collecting global methane data in 1983.
Independent 13th April 2020 read more »