Preliminary study on assimilation of significant wave heights from T/P altimeter

ZHANG Zhi-xu; QI Yi-quan; SHI Ping; Li Chi-wai; LI Yok-sheung

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ZHANG Zhi-xu, QI Yi-quan, SHI Ping, Li Chi-wai, LI Yok-sheung. Preliminary study on assimilation of significant wave heights from T/P altimeter[J]. Haiyang Xuebao, 2003, 25(5): 21-28.

Citation:

ZHANG Zhi-xu, QI Yi-quan, SHI Ping, Li Chi-wai, LI Yok-sheung. Preliminary study on assimilation of significant wave heights from T/P altimeter[J]. Haiyang Xuebao, 2003, 25(5): 21-28.

ZHANG Zhi-xu, QI Yi-quan, SHI Ping, Li Chi-wai, LI Yok-sheung. Preliminary study on assimilation of significant wave heights from T/P altimeter[J]. Haiyang Xuebao, 2003, 25(5): 21-28.

Citation:

ZHANG Zhi-xu, QI Yi-quan, SHI Ping, Li Chi-wai, LI Yok-sheung. Preliminary study on assimilation of significant wave heights from T/P altimeter[J]. Haiyang Xuebao, 2003, 25(5): 21-28.

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Preliminary study on assimilation of significant wave heights from T/P altimeter

1.
LED, South China Sea Institute of Oceanology, Chinese Academy of Sciences, Guangzhou 510301, China
2.
Department of Civil & Structural Engineering, the Hong Kong Polytechnic University, Hong Kong, China

Received Date: 2002-10-09
Rev Recd Date: 2003-05-06

Abstract

Abstract

Combining the NCEP re-analysis wind data with an empirical typhoon wind model,the wind fields are formed and compared with the TOPEX/Poseidon altimetric wind speeds,there is generally consistency between them.The wind fields are used to drive a third-generation wind wave model to simulate the wave fields in the South China Sea during the period of Typhoon York in 1999.The significant wave heights from the wave model are under estimated while compared with the TOPEX/Poseidon altimetric data.Then,a simple optimal interpo lation assimilation technology is employed in the wave model,the result shows that the performance of the wave model is improved and its impact of assimilation is obvious especially in the swell part.The lasting time of the assimilation is about 43 h.
- typhoon waves,
- numerical simulation,
- altimeter,
- assimilation

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References(18)

References

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