National Aeronautics and Space Administration

Goddard Space Flight Center

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 »

Google Earth Engine Data Fusion Tool to Support Air Quality Managers

Many information sources can support air quality assessment and forecasting, including atmospheric chemistry models, satellite retrievals of column chemical and aerosol constituents, and surface-based air quality monitoring data from both regulatory and low-cost instruments.

Direct Assimilation of AVHRR Satellite Radiance Mmeasurements in a Reanalysis System

Sea surface temperature (SST) is an important variable of any data assimilation and modeling system which aims to accurately represent long time-scale events, such as El-Nino-Southern-Oscillation (ENSO), that evolve over months, to short time-scale events such as convection that can evolve over hours (Diaz et al., 2001 and Sabin et al., 2013).

Meteorologic Analysis of the August 2023 Maui Wildfires

The August 8th-9th wildfires in Hawaii devastated the island of Maui, resulting in the United States' deadliest wildfire in the last 100 years. The Lahaina and Upcountry fires caused widespread destruction and loss of life, predominantly in the town of Lahaina.

GEOS S2Sv2 Indian Ocean Dipole Forecast and its Potential Global Impacts

The Indian Ocean dipole (IOD) is a climate phenomenon that occurs in the Indian Ocean. The positive phase of the IOD is associated with warmer sea surface temperatures (SST) in the western Indian Ocean and colder SST in the eastern Indian Ocean.