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Topic: Greenhouse gases

Thick smoke from a coking plant being emitted from the top of two stacks. Undated image.

May 23, 2023

May 23, 2023

NOAA index tracks how greenhouse gas pollution amplified global warming in 2022

greenhouse gases

Thin sections of portraits of Benjamin Franklin, Benjamin Banneker, Thomas Jefferson, James Madison, and Eunice Newton Foote lined up next to each other.

April 19, 2023

April 12, 2023

5 citizen scientists of the 18th and 19th centuries

Heritage stories

Heritage stories

greenhouse gases

citizen science

Undated image of Anacortes industrial site in Washington state.

Greenhouse gases continued to increase rapidly in 2022

April 5, 2023

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greenhouse gases

Undated image of Anacortes industrial site in Washington state.

Mauna Loa sunset.

Greenhouse gas pollution trapped 49% more heat in 2021 than in 1990

May 23, 2022

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greenhouse gases

Mauna Loa sunset.

Air samples from NOAA's Mauna Loa observatory in Hawaii provide important data for climate scientists around the world. On Thursday, NOAA announced that analysis of data from their global sampling network showed that levels of the potent greenhouse gas methane recorded the largest annual increase ever observed in 2021, while carbon dioxide continued to increase at historically high rates.

Increase in atmospheric methane set another record during 2021

April 7, 2022

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greenhouse gases

Air samples from NOAA's Mauna Loa observatory in Hawaii provide important data for climate scientists around the world. On Thursday, NOAA announced that analysis of data from their global sampling network showed that levels of the potent greenhouse gas methane recorded the largest annual increase ever observed in 2021, while carbon dioxide continued to increase at historically high rates.

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.)

Alaska Air 737-9 flies over Mt. Rainier

NOAA and Boeing to use airliner to sample greenhouse gases from atmosphere

June 3, 2021

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greenhouse gases

Alaska Air 737-9 flies over Mt. Rainier

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.

This image shows the ozone concentration over Antarctica for the week of September 14–20, 2020. Experts define the "ozone hole" as the area in which ozone levels are below 220 Dobson Units (dark blue, marked with black triangle on the color bar).

Emissions of banned ozone-depleting gas are back on the decline

February 10, 2021

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greenhouse gases

This image shows the ozone concentration over Antarctica for the week of September 14–20, 2020. Experts define the "ozone hole" as the area in which ozone levels are below 220 Dobson Units (dark blue, marked with black triangle on the color bar).

Air pollution in the form of brown smog envelops downtown Los Angeles, California. 2015.

Warming influence of greenhouse gases continues to rise

May 28, 2020

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greenhouse gases

Air pollution in the form of brown smog envelops downtown Los Angeles, California. 2015.

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