Local ensemble Kalman filtering in the presence of model bias

SJ Baek, BR Hunt, E Kalnay, E Ott… - Tellus A: Dynamic …, 2006 - Taylor & Francis
We modify the local ensemble Kalman filter (LEKF) to incorporate the effect of forecast
model bias. The method is based on augmentation of the atmospheric state by estimates of …

[图书][B] Ensemble Kalman filter experiments with a primitive-equation global model

T Miyoshi - 2005 - search.proquest.com
The ultimate goal is to develop a path towards an operational ensemble Kalman filtering
(EnKF) system. Several approaches to EnKF for atmospheric systems have been proposed …

Ensemble kalman filtering

PL Houtekamer, HL Mitchell - Quarterly Journal of the Royal …, 2005 - Wiley Online Library
Abstract An ensemble Kalman filter (EnKF) has been implemented at the Canadian
Meteorological Centre to provide an ensemble of initial conditions for the medium‐range …

A deterministic formulation of the ensemble Kalman filter: an alternative to ensemble square root filters

P Sakov, PR Oke - Tellus A: Dynamic Meteorology and …, 2008 - Taylor & Francis
The use of perturbed observations in the traditional ensemble Kalman filter (EnKF) results in
a suboptimal filter behaviour, particularly for small ensembles. In this work, we propose a …

On the influence of model nonlinearity and localization on ensemble Kalman smoothing

L Nerger, S Schulte… - Quarterly Journal of the …, 2014 - Wiley Online Library
Ensemble‐based Kalman smoother algorithms extend ensemble Kalman filters to reduce
the estimation error of past model states utilizing observational information from the future …

[HTML][HTML] On serial observation processing in localized ensemble Kalman filters

L Nerger - Monthly Weather Review, 2015 - journals.ametsoc.org
Ensemble square root filters can either assimilate all observations that are available at a
given time at once, or assimilate the observations in batches or one at a time. For large …

[HTML][HTML] Boundary conditions for limited-area ensemble Kalman filters

RD Torn, GJ Hakim, C Snyder - Monthly weather review, 2006 - journals.ametsoc.org
One aspect of implementing a limited-area ensemble Kalman filter (EnKF) involves the
specification of a suitable ensemble of lateral boundary conditions. Two classes of methods …

[HTML][HTML] Reducing forecast errors due to model imperfections using ensemble Kalman filtering

H Koyama, M Watanabe - Monthly Weather Review, 2010 - journals.ametsoc.org
Reducing Forecast Errors Due to Model Imperfections Using Ensemble Kalman Filtering in:
Monthly Weather Review Volume 138 Issue 8 (2010) Jump to Content Jump to Main Navigation …

A localization technique for ensemble Kalman filters

K Bergemann, S Reich - … of the Royal Meteorological Society: A …, 2010 - Wiley Online Library
Ensemble Kalman filter techniques are widely used to assimilate observations into
dynamical models. The phase‐space dimension is typically much larger than the number of …

A simpler formulation of forecast sensitivity to observations: Application to ensemble Kalman filters

E Kalnay, Y Ota, T Miyoshi, J Liu - Tellus A: Dynamic Meteorology …, 2012 - Taylor & Francis
We introduce a new formulation of the ensemble forecast sensitivity developed by Liu and
Kalnay with a small correction from Li et al. The new formulation, like the original one, is …