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RISVariational Data Assimilation with a Variable Resolution Finite-Element shallow-water Equations Model
Publisher: American Meteorological Society
Abstract: The adjoint model of a finite-element shallow-water equations model was obtained with a view to calculate the gradient of a cost functional in the framework of using this model to carry out variational data assimilation ...
The GEOS-3 Retrospective Data Assimilation System: The 6-Hour Lag Case
Publisher: American Meteorological Society
Abstract: The fixed-lag Kalman smoother (FLKS) has been proposed as a framework to construct data assimilation procedures capable of producing high-quality climate research datasets. FLKS-based systems, referred to as retrospective ...
Four-Dimensional Variational Data Assimilation Experiments with a Multilevel Semi-Lagrangian Semi-Implicit General Circulation Model
Publisher: American Meteorological Society
Abstract: Four-dimensional variational data assimilation (VDA) experiments have been carded out using the adiabatic version of the NASA/Goddard Laboratory for Atmospheres semi-Lagrangian semi-implicit (SLSI) multilevel general ...
Improved Skill for the Anomaly Correlation of Geopotential Heights at 500 hPa
Publisher: American Meteorological Society
Abstract: This paper addresses the anomaly correlation of the 500-hPa geopotential heights from a suite of global multimodels and from a model-weighted ensemble mean called the superensemble. This procedure follows a number of current ...