An tidal numerical assimilation modeling in northwest Pacific

ZHU Xueming; BAO Xianwen; HUANG Bigui; SHI Xingang; JING Chunsheng

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ZHU Xueming, BAO Xianwen, HUANG Bigui, SHI Xingang, JING Chunsheng. An tidal numerical assimilation modeling in northwest Pacific[J]. Haiyang Xuebao, 2012, 34(2): 1-12.

Citation:

ZHU Xueming, BAO Xianwen, HUANG Bigui, SHI Xingang, JING Chunsheng. An tidal numerical assimilation modeling in northwest Pacific[J]. Haiyang Xuebao, 2012, 34(2): 1-12.

ZHU Xueming, BAO Xianwen, HUANG Bigui, SHI Xingang, JING Chunsheng. An tidal numerical assimilation modeling in northwest Pacific[J]. Haiyang Xuebao, 2012, 34(2): 1-12.

Citation:

ZHU Xueming, BAO Xianwen, HUANG Bigui, SHI Xingang, JING Chunsheng. An tidal numerical assimilation modeling in northwest Pacific[J]. Haiyang Xuebao, 2012, 34(2): 1-12.

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An tidal numerical assimilation modeling in northwest Pacific

1.
Key Laboratory of Research on Marine Hazards Forecasting, National Marine Environmental Forecasting Center, Beijing 100081, China
2.
College of Physical and Environmental Oceanography, Ocean University of China, Qingdao 266100, China
3.
CNOOC Research Center, Beijing 100027, China
4.
Beijing Branch of CNOOC Energy Technology & Services Limited, Beijing 100027, China
5.
Third Institute of Oceanography, State Oceanic Administration, Xiamen 361005, China

Received Date: 2010-04-21
Rev Recd Date: 2010-08-13

Abstract

Abstract

Based on the Finite Volume Coastal and Ocean Model (FVCOM), an unstructured ocean tidal numerical model with high resolution was built in northwest Pacific, including the marginal seas adjacent to China, Japan/East Sea and Okhotsk Sea. The model was in a spherical coordinate and took into account the effects of non-linear and tide-generating force. The tidal datasets from 84 tide-gauges along the coast were assimilated into the model with Nudging method. Comparing with the other 175 tidal stations which were not assimilated in this model, the simulated results were well agree with the observations, with the absolute mean errors of amplitude and phase-lag 4.0 cm and 5.6° for M₂ constituent, 2.4 cm and 7.5° for S₂ constituent, 2.6 cm and 6.3° for K₁ constituent, 1.5 cm and 5.0° for O₁ constituent, respectively. According to the co-tidal charts for the four major constituents by harmonic analysis, 8 amphidromic points for the semi-diurnal tides and 5 amphidromic points for the diurnal tides were found. The existence of amphidromic point for the diurnal tides in Soya strait was confirmed by the model results and we documented first an amphidromic point for the diurnal tides in Tsugaru strait. The distribution for the maximum possible tidal ranges and the tide residual water level were obtained in the whole model domain.
- northwest Pacific,
- Japan/East Sea,
- tide,
- nudging,
- FVCOM

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References(28)

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