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Ozone hole modest despite conditions ripe for depletion

Ozone hole modest despite conditions ripe for depletion

Weather conditions were ripe for a big ozone hole this year. But declining levels of ozone-depleting chemicals kept it to near-average size.

November 2, 2018 0 Comments
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 0 Comments
NOAA “reels in” data on Utah’s winter ozone problem

NOAA “reels in” data on Utah’s winter ozone problem

A deep sea fishing rod is probably not the first tool that comes to mind when thinking about how to study air pollution in a remote inland desert, but it’s the heart of a new NOAA system that has given scientists a minute-by-minute look at how quickly the sun can convert oil and gas facility emissions to harmful ground-level ozone.

September 19, 2016 0 Comments
Recording climate change from the top of the world

Recording climate change from the top of the world

Spring came early this year, breaking several records at the top of the world in Barrow, Alaska, according to a new report that combines observations from NOAA, the North Slope Borough and a scientist who has tracked an Arctic bird for the last four decades.

August 31, 2015 0 Comments
American Chemical Society honors measurement set at NOAA observatory

American Chemical Society honors measurement set at NOAA observatory

The American Chemical Society will designate the Keeling Curve – a long-term record of rising carbon dioxide in the planet’s atmosphere -- as a National Historic Chemical Landmark in a ceremony April 30 at NOAA’s Mauna Loa Observatory in Hawaii.


April 23, 2015 0 Comments
NOAA contributes key carbon dioxide data to global carbon assessment

NOAA contributes key carbon dioxide data to global carbon assessment

A global report released this week on changing carbon dioxide levels in Earth’s atmosphere, oceans, and land environment draws heavily from data and observations by NOAA research scientists and their partners. For the first time, the annual assessment by the Global Carbon Project uses data obtained from autonomous instruments installed by NOAA scientists on its ships and other ships of opportunity and moorings to determine the variability of  carbon dioxide in the surface ocean. 

September 25, 2014 0 Comments
Heat-trapping gas concentrations top 400 ppm, two months earlier than last year

Heat-trapping gas concentrations top 400 ppm, two months earlier than last year

Over the last five days beginning on March 16, 2014, carbon dioxide levels have surpassed 400 parts per million at NOAA’s Mauna Loa Observatory in Hawaii. This is nearly two months earlier than last year when the concentration of this greenhouse gas was first recorded above 400 parts per million on May 9, at the historic NOAA observatory. 

We caught up with James Butler, Ph.D., Director of NOAA’s Global Monitoring Division, to ask about what it means that we reached this milestone earlier than last year. To track carbon dioxide concentrations daily click here.

March 21, 2014 0 Comments
Encouraging information from this year’s observations of the Antarctic ozone hole

Encouraging information from this year’s observations of the Antarctic ozone hole

For nearly 50 years, scientists with NOAA have launched high-altitude balloons from the South Pole, to understand why a hole was forming in the protective ozone layer high in the atmosphere. Now, organizations around the world track the infamous ozone hole through these ballon-sondes, satellite measurements and ground instruments.
October 21, 2013 0 Comments
Greenhouse gases continue climbing; 2012 a record year

Greenhouse gases continue climbing; 2012 a record year

NOAA’s updated Annual Greenhouse Gas Index (AGGI), which measures the direct climate influence of many heat-trapping gases like carbon dioxide and methane, shows 2012 continued the steady upward trend that began with the Industrial Revolution of the 1880s.  Last year, CO2 at the peak of its cycle reached 400 ppm for one month at all eight Arctic sites for the first time.
August 1, 2013 0 Comments
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 0 Comments
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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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