Effect of high-frequency sea waves on wave period retrieval from radar altimeter and buoy data

Xifeng Wang, Kaoru Ichikawa

研究成果: Contribution to journalArticle査読

3 被引用数 (Scopus)

抄録

Wave periods estimated from satellite altimetry data behave differently from those calculated from buoy data, especially in low-wind conditions. In this paper, the geometric mean wave period Ta is calculated from buoy data, rather than the commonly used zero-crossing wave period Tz. The geometric mean wave period uses the fourth moment of the wave frequency spectrum and is related to the mean-square slope of the sea surface measured using altimeters. The values of Ta obtained from buoys and altimeters agree well (root mean square difference: 0.2 s) only when the contribution of high-frequency sea waves is estimated by a wavenumber spectral model to complement the buoy data, because a buoy cannot obtain data from waves having wavelengths that are shorter than the characteristic dimension of the buoy.

本文言語英語
論文番号764
ジャーナルRemote Sensing
8
9
DOI
出版ステータス出版済み - 9 2016

All Science Journal Classification (ASJC) codes

  • 地球惑星科学(全般)

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