Global Monitoring Division
  • Mauna Loa
    Mauna Loa, Hawaii
  • MLO CO2
    Mauna Loa CO2
  • Barrow, Alaska
    Barrow, Alaska
  • American Samoa
    American Samoa
  • Water Vapor Balloon Flight
    Picture from Water Vapor balloon flight, 20km altitude
  • Solar Transmisison
    Mauna Loa Apparent Solar Transmission
  • Hats data
    Global Means of various Halogenated compounds
  • Surface Radiation
    Surface Radiation Measurement Instruments near Penn State
  • Trinidad Head
    Trinidad Head, California
  • South Pole Ozone
    South Pole Ozone Hole Profile
  • South Pole
    The Atmospheric Research Observatory at South Pole
  • Summit
    Summit, Greenland
  • Carbontracker
    CO2 Weather computed by Carbontracker Model
Climate ESRL's Global Monitoring Division conducts sustained observations and research related to global distributions, trends, sources and sinks of atmospheric constituents that are capable of forcing change in the climate of the Earth. This research will advance climate projections and provide scientific policy-relevant, decision support information to enhance society's ability to plan and respond.
Ozone ESRL's Global Monitoring Division conducts research on the depletion of the global stratospheric ozone layer and Antarctic ozone hole through global surface-based monitoring of total-column ozone, ultraviolet radiation, and ozone-depleting gases, including those regulated by the Montreal Protocol. Continued surveillance is necessary in order to verify the expected recovery of the ozone layer.
Air Quality ESRL's Global Monitoring Division monitors levels of air quality elements such as tropospheric ozone, carbon monoxide and aerosol particles in non-source regions which may be affected by long range transport from distant sources of industrial pollution. This large-scale transport affects baseline air quality which must be monitored in order to determine the importance of regional sources that may impact the environment and public health.

News and Highlights

2015 Sets a Record Low for Antarctic Ozone Hole in October
November 20, 2015

2015 Sets a Record Low for Antarctic Ozone Hole in October

NOAA’s measurements of ozone at South Pole registered a record low for the month of October. This year, the average amount of ozone measured by a Dobson instrument at South Pole in the second half of October was 114 Dobson Units (DU), or 60 percent below the pre-ozone hole conditions.
Annual Antarctic Ozone Hole Larger and Formed Later in 2015
October 29, 2015

Annual Antarctic Ozone Hole Larger and Formed Later in 2015

The 2015 Antarctic ozone hole area was larger and formed later than in recent years, according to scientists from NOAA and NASA.
NBC News video on the warming arctic and Barrow, Alaska
September 17, 2015

NBC News video on the warming arctic and Barrow, Alaska

NBC News aired a news story about the affect that the warming arctic has on the people of Barrow, Alaska. Included in the video is an interview with the Barrow NOAA observatory station chief Marty Martinsen. See the video here.
Scientists find Southern Ocean removing CO2 from the atmosphere more efficiently
September 10, 2015

Scientists find Southern Ocean removing CO2 from the atmosphere more efficiently

Since 2002, the Southern Ocean has been removing more of the greenhouse gas carbon dioxide (CO2) from the atmosphere, according to two new studies. These studies make use of millions of ship-based observations and a variety of data analysis techniques to conclude that the Southern Ocean has increasingly taken up more CO2 during the last 13 years.
Recording climate change from the top of the world
August 31, 2015

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.
Congratulations to recent ESRL award winners
July 29, 2015

Congratulations to recent ESRL award winners

John A. Ogren, Patrick J. Sheridan and James W. Wendell of the Aerosol group in the ESRL Global Monitoring Division won the 2015 NOAA Technology Transfer Award, which recognizes achievements that are developed further as commercial applications, or that advance the transfer of NOAA science and technology to U.S. businesses, academia, other government and non-government entities.
Measuring methane loss in Texas
July 16, 2015

Measuring methane loss in Texas' Barnett Shale

About 170,000 pounds (76,000 kg) of the greenhouse gas methane leak per hour from the Barnett Shale region of Texas, including the urban areas of Dallas and Fort Worth, according to a new study led by NOAA/ESRL and Cooperative Institute for Research in Environmental Sciences (CIRES) researchers.
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Research Groups

  • Global Greenhouse Gas Reference Network

    The GGGRN makes measurements of the spatial and temporal distributions of greenhouse gases and provides essential constraints to our understanding of the global carbon cycle.
  • Halocarbons and other Trace Species

    The HATS group quantifies the distributions and magnitudes of the sources and sinks for important ozone-depleting and greenhouse gases.
  • Aerosols

    The goals of this program are to characterize means, variability, and trends of climate-forcing properties of different types of aerosols.
  • Solar and Infrared Radiation

    Activities involve empirical and theoretical research of the Earth's surface radiation budget.
  • Ozone and Water Vapor

    Research on the nature and causes of the depletion of the stratospheric ozone layer and the role of ozone and water vapor in forcing climate change.
  • Observatory Operations

    NOAA/ESRL operates staffed atmospheric baseline observatories from which numerous in situ and remote atmospheric and solar measurements are conducted.

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