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Atmospheric Baseline Observatory

Carbon dioxide peaks near 420 parts per million at Mauna Loa observatory

June 7, 2021

In May, NOAA's measurements at the Mauna Loa observatory averaged 419.13 parts per million. Scientists at Scripps calculated a monthly average of 418.92 ppm. It's the highest level since accurate measurements began 63 years ago.

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Former NOAA employee Christina Koch greets NOAA from the International Space Station

May 21, 2019

It’s not every day you get a message from space. But on May 21, former NOAA employee Christina Koch greeted attendees at NOAA’s 47th Global Monitoring

Former NOAA employee Christina Koch greets NOAA from the International Space Station Read More >

Atmospheric Baseline Observatory

Carbon dioxide peaks near 420 parts per million at Mauna Loa observatory

Former NOAA employee Christina Koch greets NOAA from the International Space Station

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