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Phase Space Volume Conservation under Space and Time Discretization Schemes for the Shallow-Water Equations
Publisher: American Meteorological Society
Abstract: Applying concepts of analytical mechanics to numerical discretization techniques for geophysical flows has recently been proposed. So far, mostly the role of the conservation laws for energy- and vorticity-based quantities ...
Controlling Overestimation of Error Covariance in Ensemble Kalman Filters with Sparse Observations: A Variance-Limiting Kalman Filter
Publisher: American Meteorological Society
Abstract: he problem of an ensemble Kalman filter when only partial observations are available is considered. In particular, the situation is investigated where the observational space consists of variables that are directly observable ...
Kalman Filter and Its Modern Extensions for the Continuous-Time Nonlinear Filtering Problem
Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: This paper is concerned with the filtering problem in continuous time. Three algorithmic solution approaches for this problem are reviewed: (i) the classical Kalman–Bucy filter, which provides an exact solution for the ...
Impact of the Mesoscale Range on Error Growth and the Limits to Atmospheric Predictability
Publisher: American Meteorological Society
Abstract: Global numerical weather prediction (NWP) models have begun to resolve the mesoscale k−5/3 range of the energy spectrum, which is known to impose an inherently finite range of deterministic predictability per se as errors ...