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.

2022年4月14日 · The Global Modeling and Assimilation Office (GMAO) is a unique organization that uses computer models and data assimilation techniques to enhance NASA's program of Earth Observations.

2023年4月12日 · The GEOS "Forward Processing" (FP) system generates analyses, assimilation products, and ten-day forecasts with the most up-to-date validated version of GEOS that is available. The FP system allows GMAO scientists to test their forefront modeling and analysis developments in a near-real-time system. » See GEOS FP Weather Analyses and Forecasts.

2021年8月6日 · The GMAO conducts modeling and assimilation activities that support NASA's current suite of Earth Observation missions, use data gathered by past and current missions, and help plan for future observing systems.

2022年9月9日 · Along with the enhancements in the meteorological assimilation, MERRA-2 takes some significant steps towards GMAO’s target of an Earth System reanalysis. MERRA-2 is the first long-term global reanalysis to assimilate space-based observations of aerosols and represent their interactions with other physical processes in the climate system.

2025年2月6日 · GMAO generates and distributes a number of products that either make extensive use of NASA's satellite observations, provide support to satellite missions and field campaigns, or help with the planning for new missions. These products also support researchers funded by NASA and others.

The GMAO Hybrid Ensemble-Variational Atmospheric Data Assimilation System: Version 2.0 50, 184 pp. (5543 kB). Kim, Jong, Santha Akella, Arlindo M. da Silva, Ricardo Todling, and William McCarty, 2018.

2023年3月29日 · Alongside the need to predict weather at fine, localized scales, global mesoscale modeling has two main applications in the GMAO. First, it is essential for NASA to be able to simulate existing and future types of observations with a resolution that is close to the footprint size of the satellite instruments.

2018年1月9日 · The NASA GMAO seasonal forecasts are produced with the Goddard Earth Observing System (GEOS) AOGCM (GEOS-S2S_2.1). The atmospheric component (Rienecker et al. 2008; Molod et al. 2015) is discretized on a cubed sphere grid (Putman and Lin, 2008) at approximately ½ ° horizontal resolution with 72 vertical layers.

GMAO generates GEOS data products in near real time or reanalysis modes in support of diverse user communities. Starting in February 2013, GEOS forward processing is conducted in two separate streams. These are called (1) Forward Processing (FP) and (2) Forward Processing for Instrument Teams (FP-IT). » Read More