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carbon dioxide

NOAA's Mauna Loa observatory, set high on the barren slopes of a volcano in the middle of the Pacific Ocean, is ideally situated to sample air that has not been influenced by local pollution sources or vegetation.

Carbon dioxide now more than 50% higher than pre-industrial levels

June 3, 2022

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NOAA's Mauna Loa observatory, set high on the barren slopes of a volcano in the middle of the Pacific Ocean, is ideally situated to sample air that has not been influenced by local pollution sources or vegetation.

Atmospheric carbon dioxide measured at NOAA’s Mauna Loa Atmospheric Baseline Observatory peaked for 2021 in May at a monthly average of 419 parts per million (ppm), the highest level since accurate measurements began 63 years ago, according to scientists from NOAA and Scripps Institution of Oceanography at the University of California San Diego. (2019 photo of observatory grounds, Big Island, Hawaii.)

Carbon dioxide peak in May breaks another record

June 7, 2021

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greenhouse gases

measurements and observations

Atmospheric carbon dioxide measured at NOAA’s Mauna Loa Atmospheric Baseline Observatory peaked for 2021 in May at a monthly average of 419 parts per million (ppm), the highest level since accurate measurements began 63 years ago, according to scientists from NOAA and Scripps Institution of Oceanography at the University of California San Diego. (2019 photo of observatory grounds, Big Island, Hawaii.)

NOAA's Mauna Loa observatory is a premier research facility that has continuously monitored and collected atmospheric data since the 1950s. This photo, taken in 2019, shows the observatory on its perch at 11,000 feet elevation on Hawaii's tallest mountain, which enables sampling of "background" air that is free of local pollution.

Carbon dioxide levels now higher than at any time in the past 3.6 million years

April 7, 2021

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greenhouse gases

NOAA's Mauna Loa observatory is a premier research facility that has continuously monitored and collected atmospheric data since the 1950s. This photo, taken in 2019, shows the observatory on its perch at 11,000 feet elevation on Hawaii's tallest mountain, which enables sampling of "background" air that is free of local pollution.

Atmospheric carbon dioxide measured at NOAA’s Mauna Loa Atmospheric Baseline Observatory peaked for 2021 in May at a monthly average of 419 parts per million (ppm), the highest level since accurate measurements began 63 years ago, according to scientists from NOAA and Scripps Institution of Oceanography at the University of California San Diego. (2019 photo of observatory grounds, Big Island, Hawaii.)

Rise of carbon dioxide in Earth's atmosphere continues unabated

June 4, 2020

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measuring and modeling climate

Atmospheric carbon dioxide measured at NOAA’s Mauna Loa Atmospheric Baseline Observatory peaked for 2021 in May at a monthly average of 419 parts per million (ppm), the highest level since accurate measurements began 63 years ago, according to scientists from NOAA and Scripps Institution of Oceanography at the University of California San Diego. (2019 photo of observatory grounds, Big Island, Hawaii.)

Saildrone 1020 approaches Point Bluff, New Zealand, in stormy conditions after completing the first unmanned circumnavigation of Antarctica in early August 2019. It sailed more than 13,000 miles around the Southern Ocean in 196 days.

Saildrone is first to circumnavigate Antarctica, in search for carbon dioxide

August 5, 2019

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climate science

Saildrone 1020 approaches Point Bluff, New Zealand, in stormy conditions after completing the first unmanned circumnavigation of Antarctica in early August 2019. It sailed more than 13,000 miles around the Southern Ocean in 196 days.

Atmospheric carbon dioxide continued its rapid rise in 2019, with the average for May peaking at 414.7 parts per million (ppm) at NOAA’s Mauna Loa Atmospheric Baseline Observatory, shown here, on Hawaii's Big Island.

Carbon dioxide levels in atmosphere hit record high in May

June 4, 2019

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Atmospheric carbon dioxide continued its rapid rise in 2019, with the average for May peaking at 414.7 parts per million (ppm) at NOAA’s Mauna Loa Atmospheric Baseline Observatory, shown here, on Hawaii's Big Island.

NOAA, the National Park Service and other partners launched a new buoy to measure ocean carbon dioxide concentrations and other data in Fagatele Bay in the National Marine Sanctuary of American Samoa.

New buoy in American Samoa opens a window into a changing ocean

May 21, 2019

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NOAA, the National Park Service and other partners launched a new buoy to measure ocean carbon dioxide concentrations and other data in Fagatele Bay in the National Marine Sanctuary of American Samoa.

The ocean is a carbon sink.

Video: What is the carbon cycle?

April 19, 2019

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The ocean is a carbon sink.

Mauna Loa Observatory is a premier atmospheric research facility that has been continuously monitoring and collecting data related to atmospheric change since the 1950's.

Global carbon dioxide growth in 2018 reached 4th highest on record

March 22, 2019

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greenhouse gases

Mauna Loa Observatory is a premier atmospheric research facility that has been continuously monitoring and collecting data related to atmospheric change since the 1950's.

Scientists raise a rosette loaded with water samples to measure carbon dioxide in the ocean.

Global ocean is absorbing more carbon from fossil fuel emissions

March 14, 2019

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published research

Scientists raise a rosette loaded with water samples to measure carbon dioxide in the ocean.

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