TITLE

Particle Filtering in Geophysical Systems

AUTHOR(S)
van Leeuwen, Peter Jan
PUB. DATE
December 2009
SOURCE
Monthly Weather Review;Dec2009, Vol. 137 Issue 12, p4089
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
The application of particle filters in geophysical systems is reviewed. Some background on Bayesian filtering is provided, and the existing methods are discussed. The emphasis is on the methodology, and not so much on the applications themselves. It is shown that direct application of the basic particle filter (i.e., importance sampling using the prior as the importance density) does not work in high-dimensional systems, but several variants are shown to have potential. Approximations to the full problem that try to keep some aspects of the particle filter beyond the Gaussian approximation are also presented and discussed.
ACCESSION #
47280049

 

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