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AOSC Seminar
March 28, 2019

Bringing NASA’s Observations into Earth System Analyses: Some Examples

Steven Pawson
NASA-GSFC, Global Modeling and Assimilation Office

NASA’s satellite observations provide a wealth of unique information about the state of the atmosphere, ocean, land, and ice.  Each NASA mission provides data that enable the research community to study components of the Earth System, leading to better understanding of the processes at work and how they impact changes on short and long timescales. 

The work performed in the Global Modeling and Assimilation Office (GMAO) focuses on combining information from many NASA observations, alongside data from other sources, into the Global Earth Observing System (GEOS) model.  The allows for complex analyses of multiple types of observations into coherent, multivariate analyses that provides insight into the complex interactions among many processes in the Earth system.  It also facilitates studies of how NASA observations can help improve the initial conditions for prediction experiments on timescales ranging from hours to months and even decades. 

This presentation will focus on some recent advances made in the GMAO’s GEOS systems, including impacts of cloudy microwave radiances on weather forecasting, sea-surface salinity on ENSO prediction, and the examination of stratospheric ozone recovery in the MERRA-2 reanalysis.  The focus will be on the unique capabilities of GEOS systems, that stem from the coordinated use of NASA observations.