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
Fires in Latin America and Carbon Monoxide  thumbnail

Fires in Latin America and Carbon Monoxide

n 2019, quite a large number of fires burned in the Amazon rainforests, the most intense blazes in almost a decade. Carbon monoxide (CO) is one byproduct of biomass burning. The included animation shows the evolution and transport of carbon monoxide (CO) using the GEOS model.
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High Resolution GEOS Forecasts of Super Typhoon Hagibis thumbnail

High Resolution GEOS Forecasts of Super Typhoon Hagibis

An experimental version of GEOS running with nearly 8× as many grid volumes at 6km horizontal resolution with 132 vertical levels and including non-hydrostatic dynamical effects, advanced convection, and cloud physics processes provides an improved representation of the mesoscale features of typhoon Hagibis.
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American and European Heatwaves During Summer 2019 thumbnail

American and European Heatwaves During Summer 2019

Throughout the entire month of June 2019, over 20% of Europe met the criteria defining a heatwave according to MERRA-2. Long time series are required in order to estimate climate statistics such as the percentiles of temperature, and the Modern Era retrospective Analysis for Research and Applications, Version 2 (MERRA-2) is a tool that can be useful for such studies.
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An Unusual Train of Waves in the Southern Hemisphere Stratosphere thumbnail

An Unusual Train of Waves in the Southern Hemisphere Stratosphere

The animation shown, taken from a 10-day forecast initialized on 16 September, 2019, reveals wave breaking on two scales. The global scale that deforms the polar vortex (darkest color) and moves air from the tropics (green and yellow) to the pole, and a wave of smaller scale vortices that mix tropical and high latitude air near 25°S. Here, a wave structure consisting of a chain of six smaller vortices has formed, and these appear to reinforce each other as a coherent wave. Such behavior has not been noted, previously.
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