A particle‐filter based adaptive inflation scheme for the ensemble Kalman filter

نویسندگان
چکیده

برای دانلود رایگان متن کامل این مقاله و بیش از 32 میلیون مقاله دیگر ابتدا ثبت نام کنید

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Analysis Scheme in the Ensemble Kalman Filter

This paper discusses an important issue related to the implementation and interpretation of the analysis scheme in the ensemble Kalman filter. It is shown that the observations must be treated as random variables at the analysis steps. That is, one should add random perturbations with the correct statistics to the observations and generate an ensemble of observations that then is used in updati...

متن کامل

Echo Cancellation: A Novel Adaptive Kalman Filter-Based Scheme

A novel adaptive echo cancellation scheme, using an accurate and reliable two-stage identification scheme and an adaptive Kalman filter (KF), is proposed. The novel scheme estimates a desired waveform from the received signal which is corrupted by an undesired echo and noise. It is assumed that the desired waveform and the echo are uncorrelated with each other, and that the reference waveform i...

متن کامل

Nonlinear stability of the ensemble Kalman filter with adaptive covariance inflation

The Ensemble Kalman filter and Ensemble square root filters are data assimilation methods used to combine high dimensional nonlinear models with observed data. These methods have proved to be indispensable tools in science and engineering as they allow computationally cheap, low dimensional ensemble state approximation for extremely high dimensional turbulent forecast models. From a theoretical...

متن کامل

A Hybrid Ensemble Kalman Filter / 3d-variational Analysis Scheme

Given the chaotic nature of the atmosphere, ensemble forecasting is increasingly being embraced as an approach for providing probabilistic weather forecasts. The best method for determining a set of initial conditions for ensemble forecasts is still being debated. We have found that there are appealing characteristics to ensembles of forecasts generated by the perturbed observation (PO) method ...

متن کامل

Adaptive Observation Strategies with the Local Ensemble Transform Kalman Filter

Adaptive observation strategies (AOS) aim to improve forecasts by adding additional observations at a few locations that have no standard observations. Lorenz and Emanuel (1998) designed experiments to evaluate different adaptive strategies with Lorenz 40-variable model. Routine observations are observed over “land” (grid points from 21 to 40) every 6 hours. One adaptive point is chosen from on...

متن کامل

ذخیره در منابع من


  با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید

ژورنال

عنوان ژورنال: Quarterly Journal of the Royal Meteorological Society

سال: 2020

ISSN: 0035-9009,1477-870X

DOI: 10.1002/qj.3716