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.

2017 Global Monitoring Annual Conference

2017 Global Monitoring Annual Conference

December 19, 2016

NOAA's Earth System Research Laboratory (ESRL), Global Monitoring Division, will hold the 45th Global Monitoring Annual Conference on Tuesday and Wednesday, May 23rd and 24th, 2017, in Boulder, Colorado.



News and Highlights

Seminar: April 27, 2017

The Clean Energy Future is Unstoppable: How We're Getting There

Watch a weather balloon explode 100,000 feet high in the atmosphere
April 14, 2017

Watch a weather balloon explode 100,000 feet high in the atmosphere

Patrick Cullis of the GMD Ozone and Water Vapor Group, created a video of a weather balloon bursting, posted at Washington Post.
NOAA study shows as US drilling surged, methane emissions didn’t
March 24, 2017

NOAA study shows as US drilling surged, methane emissions didn’t

A new NOAA study shows that methane emissions from the United States did not grow significantly from 2000 to 2013 and are not likely to have been an important driver of the increase in atmospheric methane levels observed worldwide after 2007, as other studies have suggested.
Carbon dioxide levels rose at record pace for 2nd straight year
March 13, 2017

Carbon dioxide levels rose at record pace for 2nd straight year

Carbon dioxide levels measured at NOAA’s Mauna Loa Baseline Atmospheric Observatory rose by 3 parts per million to 405.1 parts per million (ppm) in 2016, an increase that matched the record jump observed in 2015.
Photo: Last flight from the South Pole
February 23, 2017

Photo: Last flight from the South Pole

As winter closes in, flights to the international research compound are suspended for the long Antarctic winter.
Unprecedented Arctic weather has scientists on edge
February 17, 2017

Unprecedented Arctic weather has scientists on edge

As station chief at NOAA’s Point Barrow, Alaska, observatory, Bryan Thomas works close to the edge of the Arctic Ocean. What he saw from his office in early February, looking north toward the horizon, was troubling.
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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.


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

Global 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.

Education and Outreach


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