Coupled bred vectors in the tropical Pacific and their application to ENSO prediction SCIE SCOPUS

Cited 4 time in WEB OF SCIENCE Cited 4 time in Scopus
Title
Coupled bred vectors in the tropical Pacific and their application to ENSO prediction
Author(s)
Ham, Yoo-Geun; Kang, In-Sik; Kug, Jong-Seong
Publication Year
2012-10
Abstract
Two independent coupled bred vectors (BVs) were generated to capture growing errors related to a high-frequency mode and typical ENSO mode by applying different rescaling cycles using the SNU Coupled GCM. We showed that zonal advection (vertical advection) is primary mechanism to develop SST perturbation with 1-month (6-month) rescaling cycle, which implies that the physical mechanisms of two coupled BVs are different. In addition, the dominant pattern of a 1-month (6-month) rescaling BV thermocline depth showed a large positive anomaly over the central Pacific (eastern Pacific). Twenty-year ensemble hindcast with BVs showed a significant correlation improvement over the tropical Pacific regions when compared to lagged averaged forecast perturbations. The improvement was greatest after taking ensemble average of two pairs of BVs, providing evidence that BV1 and BV6 exhibit dynamically independent modes. (C) 2012 Elsevier Ltd. All rights reserved.
ISSN
0079-6611
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/3449
DOI
10.1016/j.pocean.2012.04.005
Bibliographic Citation
PROGRESS IN OCEANOGRAPHY, v.105, pp.90 - 101, 2012
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
Subject
OCEAN-ATMOSPHERE MODEL; SEASONAL CLIMATE PREDICTABILITY; ZONAL ADVECTIVE FEEDBACKS; GENERAL-CIRCULATION MODEL; ENSEMBLE KALMAN FILTER; OPTIMAL-GROWTH; EL-NINO; INITIAL CONDITIONS; RECHARGE PARADIGM; DATA ASSIMILATION
Type
Article
Language
English
Document Type
Review
Publisher
PERGAMON-ELSEVIER SCIENCE LTD
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