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.
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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.
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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.
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2016 Global Monitoring Annual Conference
December 1, 2015

2016 Global Monitoring Annual Conference

NOAA's Earth System Research Laboratory (ESRL), Global Monitoring Division, is pleased to announce the 44th Global Monitoring Annual Conference to be held Tuesday and Wednesday, May 17th and 18th, 2016, in Boulder, Colorado.

News and Highlights

New Methane Global Trends Web Page
February 5, 2016

New Methane Global Trends Web Page

NOAA/ESRL's Global Monitoring Division has introduced a 'Trends in Atmospheric Methane' web page. Similar to the existing 'Trends in Carbon Dioxide' web page, it displays graphs and data for the most recent globally averaged CH4 data.
Ann Thorne Named NOAA Research Employee of the Year
December 9, 2015

Ann Thorne Named NOAA Research Employee of the Year

Ann Thorne of the Global Monitoring Division received the NOAA Research Employee of the Year Award "For exceptional service to NOAA's Global Monitoring Division and Earth System Research Laboratory, and an unsurpassed spirit and dedication to the NOAA Boulder Student Program."
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.
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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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