Ensemble Data Assimilation System Based on Control Theory

نویسندگان

  • Milija Zupanski
  • Mohamed Jardak
چکیده

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

منابع مشابه

Ensemble Data Assimilation System Based on Control Theory Expired 31 August 2008

Research team: David A. Randall (Co-PI) Professor, Atmospheric Science Department, Colorado State University Dacian N. Daescu (Co-PI) Assistant Professor, Department of Mathematics and Statistics, Portland State University Steven J. Fletcher Cooperative Institute for Research in the Atmosphere, Colorado State University Bahri Uzuznoglu Department of Scientific Computing, Florida State Universit...

متن کامل

Non-differentiable Minimization in the Context of the Maximum Likelihood Ensemble Filter (mlef)

The Maximum Likelihood Ensemble Filter (MLEF) is a control theory based ensemble data assimilation algorithm. The MLEF is presented and its basic equations discussed. Its relation to Kalman filtering is examined, indicating that the MLEF can be viewed as a nonlinear extension of the Kalman filter in the sense that it reduces to the standard Kalman filter for linear operators and Gaussian Probab...

متن کامل

An Ensemble Ocean Data Assimilation System for Seasonal Prediction

A new ensemble ocean data assimilation system, developed for the Predictive Ocean Atmosphere Model for Australia (POAMA), is described. The new system is called PEODAS, the POAMA Ensemble Ocean Data Assimilation System. PEODAS is an approximate form of an ensemble Kalman filter system. For a given assimilation cycle, a central forecast is integrated, along with a small ensemble of forecasts tha...

متن کامل

Estimating Model Parameters with Ensemble-Based Data Assimilation: A Review

Weather forecast and earth system models usually have a number of parameters, which are often optimized manually by trial and error. Several studies have proposed objective methods to estimate model parameters using data assimilation techniques. This paper provides a review of the previous studies and illustrates the application of ensemble-based data assimilation to the estimation of temporall...

متن کامل

Information-based data selection for ensemble data assimilation

Ensemble-based data assimilation is rapidly proving itself as a computationally efficient and skilful assimilation method for numerical weather prediction, which can provide a viable alternative to more established variational assimilation techniques. However, a fundamental shortcoming of ensemble techniques is that the resulting analysis increments can only span a limited subspace of the state...

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

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

ثبت نام

اگر عضو سایت هستید لطفا وارد حساب کاربری خود شوید

عنوان ژورنال:

دوره   شماره 

صفحات  -

تاریخ انتشار 2008