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RISAssimilation Variability in the GEOS-1 Data Assimilation System
Publisher: American Meteorological Society
Abstract: Ensembles of assimilation runs were used to assess the sensitivity of the GEOS-1 (Goddard Earth Observing System?Version 1) data assimilation system to data gaps and changes in initial conditions. Perturbations from a ...
Assessing the Effects of Data Selection with the DAO Physical-Space Statistical Analysis System
Publisher: American Meteorological Society
Abstract: Conventional optimal interpolation (OI) analysis systems solve the standard statistical analysis equations approximately, by invoking a local approximation and a data selection procedure. Although solution of the analysis ...
Impacts of Marine Surface Pressure Observations from a Spaceborne Differential Absorption Radar Investigated with an Observing System Simulation Experiment
Publisher: American Meteorological Society
The Modern-Era Retrospective Analysis for Research and Applications, Version 2 (MERRA-2)
Publisher: American Meteorological Society
Abstract: AbstractThe Modern-Era Retrospective Analysis for Research and Applications, version 2 (MERRA-2), is the latest atmospheric reanalysis of the modern satellite era produced by NASA?s Global Modeling and Assimilation Office ...
MERRA: NASA’s Modern-Era Retrospective Analysis for Research and Applications
Publisher: American Meteorological Society
Abstract: he Modern-Era Retrospective Analysis for Research and Applications (MERRA) was undertaken by NASA?s Global Modeling and Assimilation Office with two primary objectives: to place observations from NASA?s Earth Observing ...