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
Science Snapshot Archive »
April 2024 Solar Eclipse - 3-Day Cloud Cover Forecast thumbnail

April 2024 Solar Eclipse - 3-Day Cloud Cover Forecast

The 2024 Solar Eclipse is on April 8! See what the GMAO's weather models predict for the viewing conditions. Spoiler alert: they may not agree with the climatology.
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MJO Propagation and Associated Moist Dynamics in Version 3 of GEOS-S2S Forecast System thumbnail

MJO Propagation and Associated Moist Dynamics in Version 3 of GEOS-S2S Forecast System

The GEOS-S2S Version 3 (GEOS-S2S-3) model is set to replace Version 2. Among the processes better captured with this update are the Madden-Julian Oscillation (MJO). Take a look at the development behind this improvement.
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April 2024 Solar Eclipse – Clear or Cloudy Skies? thumbnail

April 2024 Solar Eclipse – Clear or Cloudy Skies?

The Total Solar Eclipse is right around the corner! See what GEOS-IT systems indicate the visibility may be based on cloud cover climatology.
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Lake Michigan Lake Effect Snow and the GEOS-4km Exp Model thumbnail

Lake Michigan Lake Effect Snow and the GEOS-4km Exp Model

A significant lake effect snow event dumped almost 2 feet on the southern Lake Michigan shore. See how the GEOS-Exp 4km model nailed the forecast.
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