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What the collapse of the ensemble Kalman filter tells us about particle filters Cover

What the collapse of the ensemble Kalman filter tells us about particle filters

Open Access
|Jan 2017

Abstract

The ensemble Kalman filter (EnKF) is a reliable data assimilation tool for high-dimensional meteorological problems. On the other hand, the EnKF can be interpreted as a particle filter, and particle filters (PF) collapse in high-dimensional problems. We explain that these seemingly contradictory statements offer insights about how PF function in certain high-dimensional problems, and in particular support recent efforts in meteorology to ‘localize’ particle filters, i.e. to restrict the influence of an observation to its neighbourhood.

Language: English
Page range: 1283809 - 1283809
Submitted on: May 31, 2016
Accepted on: Dec 19, 2016
Published on: Jan 1, 2017
Published by: Stockholm University Press
In partnership with: Paradigm Publishing Services

© 2017 Matthias Morzfeld, Daniel Hodyss, Chris Snyder, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.