The GMAO Research Site

The Global Modeling and Assimilation Office (GMAO) supports NASA's Earth Science mission. Activities in Earth System modeling and data assimilation aim to maximize the impact of satellite observations on analyses and predictions of the atmosphere, ocean, land and cryosphere.

Science Snapshots
A Tale of Two Blizzards thumbnail

A Tale of Two Blizzards

Blizzards have unique identifying characteristics distinguishing one from another. The Blizzard of 1977 severely impacted western New York, specifically the Buffalo metro region, and is often cited as the benchmark event by which other blizzard events are compared.
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Stratospheric Ozone Forecasts are Realistic when using the Chemical Mechanism in the GEOS-CF System thumbnail

Stratospheric Ozone Forecasts are Realistic when using the Chemical Mechanism in the GEOS-CF System

The NASA GEOS model has been expanded to provide global near-real-time 5-day forecasts of atmospheric composition through the GEOS Composition Forecast system, "GEOS-CF". GEOS-CF can simulate the location and chemistry of the polar vortex.
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Simulating the 2022 Mauna Loa volcanic eruption using the GEOS model thumbnail

Simulating the 2022 Mauna Loa volcanic eruption using the GEOS model

Hawaii’s Mauna Loa began erupting on Nov. 27, 2022. The resulting volcanic plume of sulfur dioxide (SO2) can be seen from space with satellite instruments such as NASA’s Ozone Monitoring Instrument (OMI).
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Using Observations from NASA’s CAMP2Ex Campaign to Evaluate Smoke Optical Properties in GEOS thumbnail

Using Observations from NASA’s CAMP2Ex Campaign to Evaluate Smoke Optical Properties in GEOS

In the Fall of 2019, NASA’s P3 Orion aircraft participated in 19 research flights in the Philippines region aimed at observing the interaction of aerosols, clouds, and radiation within the atmosphere as part of the Cloud, Aerosol and Monsoon Processes Philippines Experiment (CAMP2Ex) field campaign.
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