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Another climate milestone on Mauna Loa

Another climate milestone on Mauna Loa

Carbon dioxide levels measured at NOAA’s Mauna Loa Atmospheric Baseline Observatory averaged more than 410 parts per million in April and May, the highest monthly averages ever recorded.

June 7, 2018
NOAA’s greenhouse gas index up 41 percent since 1990

NOAA’s greenhouse gas index up 41 percent since 1990

The warming influence from long-lived greenhouse gases rose again in 2017, reflecting ongoing changes to the atmosphere associated predominantly with human activities, NOAA scientists announced today.

May 30, 2018
Warming due to carbon dioxide jumped by half in 25 years

Warming due to carbon dioxide jumped by half in 25 years

Human activity  has increased the direct warming effect of carbon dioxide (CO2) in the atmosphere by 50 percent above pre-industrial levels during the past 25 years, according to NOAA's 10th Annual Greenhouse Gas Index .
May 18, 2016
Carbon Dioxide at NOAA’s Mauna Loa Observatory reaches new milestone: Tops 400 ppm

Carbon Dioxide at NOAA’s Mauna Loa Observatory reaches new milestone: Tops 400 ppm

On May 9, the daily mean concentration of carbon dioxide in the atmosphere of Mauna Loa, Hawaii, surpassed 400 parts per million (ppm) for the first time since measurements began in 1958.

May 10, 2013
NOAA, partners: Earth’s oceans and ecosystems still absorbing about half the greenhouse gases emitted by people

NOAA, partners: Earth’s oceans and ecosystems still absorbing about half the greenhouse gases emitted by people

Earth’s oceans, forests and other ecosystems continue to soak up about half the carbon dioxide emitted into the atmosphere by human activities, even as those emissions have increased, according to a study by University of Colorado and NOAA scientists published today in...
August 1, 2012
NOAA: Carbon dioxide levels reach milestone at Arctic sites

NOAA: Carbon dioxide levels reach milestone at Arctic sites

The concentration of carbon dioxide in the atmosphere of Barrow, Alaska, has reached a new milestone this spring, according to NOAA measurements.

May 31, 2012
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The Office of Oceanic and Atmospheric Research (OAR) - or "NOAA Research" - provides the research foundation for understanding the complex systems that support our planet. Working in partnership with other organizational units of the NOAA, a bureau of the Department of Commerce, NOAA Research enables better forecasts, earlier warnings for natural disasters, and a greater understanding of the Earth. Our role is to provide unbiased science to better manage the environment, nationally, and globally.

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