contributor author | Bürger, Gerd | |
contributor author | Zebiak, Stephen E. | |
contributor author | Cane, Mark A. | |
date accessioned | 2017-06-09T16:10:28Z | |
date available | 2017-06-09T16:10:28Z | |
date copyright | 1995/09/01 | |
date issued | 1995 | |
identifier issn | 0027-0644 | |
identifier other | ams-62597.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4203506 | |
description abstract | In an effort to apply the interactive Kalman filter to higher-dimensional systems, the concept of a quasi-fixed point is introduced. This is defined to be a system state where the tendency, in a suitable reduced space, is at a minimum. It allows one to use conventional search algorithms for the detection of quasi-fixed points. In Part I quasi-fixed points of the ENSO model of Zebiak and Cane are found when run in a permanent monthly mode, the reduced space being defined via a multiple EOP projection. The stability characteristics of the quasi-fixed points are analyzed, and it is shown that they are significantly different from the (in)stabilities of the average monthly models. With these quasi-fixed points, assimilation experiments are carried out with the interactive Kalman filter for the Zebiak?Cane model in the reduced space. It is demonstrated that the results are superior to both a seasonal Kalman filter and the extended Kalman filter. | |
publisher | American Meteorological Society | |
title | Quasi-Fixed Points and Periodic Orbits in the Zebiak—Cane ENSO Model with Applications in Kalman Filtering. Part I: Monthly Quasi-Fixed Points | |
type | Journal Paper | |
journal volume | 123 | |
journal issue | 9 | |
journal title | Monthly Weather Review | |
identifier doi | 10.1175/1520-0493(1995)123<2802:QFPAPO>2.0.CO;2 | |
journal fristpage | 2802 | |
journal lastpage | 2813 | |
tree | Monthly Weather Review:;1995:;volume( 123 ):;issue: 009 | |
contenttype | Fulltext | |