NOAA Global Monitoring Laboratory An official website of the United States government Here's how you know Official websites use .gov .gov website belongs to an official government organization in the United States. Secure .gov websites use HTTPS A lock ( ) or means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites. Global Monitoring Laboratory Panoramic view of the Barrow, Alaska site showing the old and new observatory buildings from the 30m tower, August 2021 The GRAD team installing Radiation System instruments at Kettle Ponds near the Rocky Mountain Biological Laboratory in Crested Butte, Colorado. A traditional Hawaiian rainbow over the Mauna Loa site Radiometers at the NOAA Table Mountain Test Facility Global Monitoring Laboratory Taking the Pulse of the Planet The Global Monitoring Laboratory (GML) of the National Oceanic and Atmospheric Administration conducts research on: Greenhouse Gases and Carbon Cycle Feedbacks Changes in Surface Radiation, Clouds, and Aerosols Recovery of Stratospheric Ozone Read More About GML >> News Publications Seminars GML team installed meteorological instruments at the Colorado Atmospheric Observatory tower News GML highlights at the 2026 AMS annual meeting News NOAA index tracks the continuing increase in heating from greenhouse gases News International report chronicles atmospheric impacts of 2022 Hunga volcanic eruption News Read More >> Research Carbon Cycle Greenhouse Gases Measurements and modeling of the distributions of greenhouse gases, providing constraints to our understanding of the global carbon cycle. Greenhouse gases and Ozone-depleting Substances Quantifying the distributions and magnitudes of the sources and sinks for important ozone-depleting and greenhouse gases. Global Radiation and Aerosols Research on the Earth's surface radiation budget and the climate-forcing properties of aerosol particles. Ozone and Water Vapor Research on the depletion of the stratospheric ozone layer and the role of ozone and water vapor in forcing climate change. Modeling GML devlops modeling systems to track the emissions and fluxes of greenhouse gases. Atmospheric Baseline Observatories Barrow, Alaska Mauna Loa, Hawaii American Samoa South Pole, Antarctica Data and Products Current Trends Solar Calculator Central Calibration Laboratory Education Annual Conference