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Establishment and tests of EnOI assimilation module for WAVEWATCH III
Qi Peng1,2; Cao Lei1,2,3
2015-09-01
发表期刊CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY
卷号33期号:5页码:1295-1308
文章类型Article
摘要In this paper, we propose a parallel data assimilation module based on ensemble optimal interpolation (EnOI). We embedded the method into the full-spectral third-generation wind-wave model, WAVEWATCH III Version 3.14, producing a wave data assimilation system. We present our preliminary experiments assimilating altimeter significant wave heights (SWH) using the EnOI-based wave assimilation system. Waters north of 15A degrees S in the Indian Ocean and South China Sea were chosen as the target computational domain, which was two-way nested into the global implementation of the WAVEWATCH III. The wave model was forced by six-hourly ocean surface wind velocities from the cross-calibrated multi-platform wind vector dataset. The assimilation used along-track SWH data from the Jason-2 altimeter. We evaluated the effect of the assimilation on the analyses and hindcasts, and found that our technique was effective. Although there was a considerable mean bias in the control SWHs, a month-long consecutive assimilation reduced the bias by approximately 84% and the root mean-square error (RMSE) by approximately 65%. Improvements in the SWH RMSE for both the analysis and hindcast periods were more significant in July than January, because of the monsoon climate. The improvement in model skill persisted for up to 48 h in July. Furthermore, the SWH data assimilation had the greatest impact in areas and seasons where and when the sea-states were dominated by swells.
关键词Data Assimilation Ensemble Optimal Interpolation (Enoi) Wavewatch Iii Satellite Altimeter Data
DOI10.1007/s00343-015-4282-8
收录类别SCI
语种英语
WOS记录号WOS:000360846900020
引用统计
文献类型期刊论文
条目标识符http://ir.qdio.ac.cn/handle/337002/50761
专题海洋环流与波动重点实验室
海洋腐蚀与防护研究发展中心
作者单位1.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China
2.Chinese Acad Sci, Key Lab Ocean Circulat & Waves, Qingdao 266071, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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Qi Peng,Cao Lei. Establishment and tests of EnOI assimilation module for WAVEWATCH III[J]. CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,2015,33(5):1295-1308.
APA Qi Peng,&Cao Lei.(2015).Establishment and tests of EnOI assimilation module for WAVEWATCH III.CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY,33(5),1295-1308.
MLA Qi Peng,et al."Establishment and tests of EnOI assimilation module for WAVEWATCH III".CHINESE JOURNAL OF OCEANOLOGY AND LIMNOLOGY 33.5(2015):1295-1308.
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