National Aeronautics and Space Administration

Goddard Space Flight Center

Arctic Fires Summer 2019 - fine particulates

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 »

Atmospheric Rivers: More Precipitation Saturates California

Less than one month after severe flooding, another series of North Pacific cyclones carried a wave of tropical moisture into California with similar consequences. Unlike the first event, these cyclones rode up and over a blocking high pressure system and traversed the West Coast of the United States from north to south.

NASA GMAO Supports Successful Test of an Inflatable Decelerator (LOFTID)

The NASA GMAO provided LOFTID (Low-Earth Orbit Flight Test of an Inflatable Decelerator) with climatological winds, temperatures, densities, and forecast error estimates over the Northern Pacific test descent region.

Atmospheric Rivers Inundate California

A series of North Pacific cyclones brought unusually heavy precipitation to California over a 2-3 week period beginning in late December 2022.

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.