English  |  正體中文  |  简体中文  |  Items with full text/Total items : 26988/38789
Visitors : 2350980      Online Users : 35
RC Version 4.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Adv. Search

Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39986

Title: Wind field variations in the tropical Pacific Ocean from satellite scatterometer data
Authors: Ho Chung-ru
Zheng Zhe-wen
Lin Chun-yi
Kuo Nan-jung
Tsao Chih-chung
Contributors: 國立臺灣海洋大學:海洋環境資訊學系
Keywords: satellite scatterometer
wind stress
vector empirical orthogonal function
tropical ocean
Date: 2008-09
Issue Date: 2017-01-11T07:17:48Z
Publisher: Journal of Geographic Information Sciences
Abstract: Abstract: Satellite scatterometers have provided an opportunity to monitor wind fields in the world oceans. The sea surface wind stress data from ERS-1/2 and QuikSCAT scatterometers from 1993 to 2007 has been used to study the variation in the tropical Pacific Ocean by vector empirical orthogonal function (VEOF) method. The first VEOF mode shows an increase trend of planetary wind stress. The significantly increasing period is found from 1999 to 2000 when is the data transferred from ERS-2 to QuikSCAT. The consistence between ERS-1/2 and QuikSCAT winds during the overlap period from 1999 to 2000 is examined. The results show that there is a significant difference between the two datasets. The ERS-1/2 data is then adjusted to fit the wind data from QuikSCAT by least squares method. VEOF is then applied to the wind dataset again and no increasing trend is found in the first VEOF mode which is related to the trade winds. The second VEOF mode indicates the seasonal variation which is related to the East Asia monsoon. After removing the annual signal, the anomaly wind data are decomposed by VEOF again. The first mode shows the interannual variability which is highly related to E1 Niño/La Niña events.
Relation: 14(2)
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/39986
Appears in Collections:[海洋環境資訊系] 演講及研討會

Files in This Item:

File Description SizeFormat

All items in NTOUR are protected by copyright, with all rights reserved.


著作權政策宣告: 本網站之內容為國立臺灣海洋大學所收錄之機構典藏,無償提供學術研究與公眾教育等公益性使用,請合理使用本網站之內容,以尊重著作權人之權益。
網站維護: 海大圖資處 圖書系統組
DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback