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Atmospheric CO2 Reaches New High, Arctic Ice Shrinks to New Low

Climate

The atmospheric concentration of carbon dioxide reached a new high of 407.7 parts per million, a 3.76 ppm increase since last May, as measured at the Mauna Loa Observatory in Hawaii.

Photo credit: NOAA

According to the National Oceanic and Atmospheric Administration, the planet last saw such an increase in carbon dioxide between 17,000 and 11,000 years ago.

Photo credit: National Snow and Ice Data Center

Last month, Arctic ice levels hit a record low, with the average area of sea ice on the Arctic Ocean being just 4.63 million square miles, according to the National Snow and Ice Data Center. This follows previous record lows set this year in January, February and April.

The image above shows a May 21 view of Arctic sea ice in the Beaufort Sea from the Moderate Resolution Imaging Spectroradiometer sensor. Photo credit: NASA / GSFC

For a deeper dive: Washington Post, Climate Central, Washington Post, IB Times

For more climate change and clean energy news, you can follow Climate Nexus on Twitter and Facebook, and sign up for daily Hot News.

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