At Mauna Loa, the NOAA observatory has a long history of measuring atmospheric CO2. Volcanic CO2 is removed from their long-term atmospheric dataset, though that removed data can in turn be used ...

An observatory high on Hawaii's Mauna Loa volcano that measures carbon dioxide in the atmosphere has reported its highest ever seasonal peak concentration of the greenhouse gas. For the first time ...

The monthly average concentration of carbon dioxide in the atmosphere measured at Mauna Loa Observatory in March showed a record 12-month increase, the Scripps Institution of Oceanography ...

Jill Tokuda and Ed Case, all Hawai‘i Democrats, introduced a resolution recognizing the nearly 70-year history and important contributions of Hawai‘i Island’s Mauna Loa Observatory. Mauna Loa ...

The measurements taken at Mauna Loa revealed a rise in CO2 of 3.58 parts per million (ppm) in 2024. This far exceeded the Met Office's prediction of 2.84ppm (± 0.54ppm).

This graph shows carbon dioxide concentrations in the atmosphere as measured at the Mauna Loa Observatory in Hawaii. The last four complete years of the record plus the current year are shown. The ...

Carbon dioxide levels measured at NOAA's Mauna Loa Atmospheric Baseline Observatory peaked at 423 parts per million in May, continuing a steady climb further into territory not seen for millions of ...

Why is the Mauna Loa Observatory so important? The Mauna Loa Observatory began taking continuous readings of the levels of carbon dioxide in the atmosphere in 1958.

Carbon dioxide levels measured on Mauna Loa in Hawaii set a new record of 424 parts per million in May, continuing the steady climb in greenhouse gas concentration in the atmosphere, the Scripps ...

An observatory high on Hawaii's Mauna Loa volcano that measures carbon dioxide in the atmosphere has reported its highest ever seasonal peak concentration of the greenhouse gas. For the first time ...

Why is the Mauna Loa Observatory so important? The Mauna Loa Observatory began taking continuous readings of the levels of carbon dioxide in the atmosphere in 1958.