Greenhouse Gas Concentrations, Global Sea Levels Hit Record Highs In 2020: NOAA

The concentration of greenhouse gases in Earth’s atmosphere hit their highest level ever recorded in 2020, while the year was overall the warmest on record, according to the National Oceanic and Atmospheric Administration’s annual review. Average methane concentration also reached a record high in 2020, according to the report, as well as an all-time high year-over-year increase of 14.8 parts per billion. The same report found a record high for global sea levels for the ninth year in a row. 

By Zack Budryk. The Hill. August 25, 2021.

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