浙江海域MASNUM海浪模式在台风“达维”“海葵”及“布拉万”过程的波浪数值模拟

发布时间：2018-01-30 00:25

  本文关键词： 海洋水文学 高分辨率风场 MASNUM海浪模式 台风过程 有效波高　出处：《应用海洋学学报》2017年02期 　论文类型：期刊论文

【摘要】：利用MASNUM海浪模式、ECMWF高分辨率风场对2012年8月份台风过程下的浙江海域的海浪状况进行了数值模拟,与近岸观测站的风、浪资料进行了对比检验和误差分析,最后针对8月份"达维""海葵"及"布拉万"3个台风过程对浙江海域的影响进行了对比分析.风速验证结果显示2个站点ECMWF风速和观测风速的偏差分别为0.18、-0.34 m/s,平均绝对误差则为2.57、1.96m/s,均方根误差为3.40、2.65 m/s,与观测风速有较好的一致性.海浪验证结果显示8月份有效波高的相关系数在0.84以上;8月份发生的"达维""海葵"及"布拉万"3个台风期间的有效波高、波周期的模拟值与观测值的均方根误差分别介于0.19~0.37 m、0.88~1.28 s,波向的平均绝对误差介于19.39°~37.65°,表明MASNUM海浪模式能够较好的再现浙江海域台风期间的海浪状况,能够较好模拟出浙江近海的最大波高.在数值模拟和实际观测的基础上,进一步的对比分析表明:"海葵"台风期间,浙江外海有效波高的最大值达7.6 m,而"达维"和"布拉万"台风期间,数值显示最大有效波高分别为4.4、5.4 m.
[Abstract]:The high resolution wind field of MASNUM wave model (ECMWF) is used to simulate the sea wave condition in Zhejiang during typhoon on August 2012, which is compared with the wind at the offshore observation station. The wave data are compared and tested and the error is analyzed. Finally, on August, "Davi", "sea anemone" and "Brawan" The results of wind speed verification show that the deviation between ECMWF wind speed and observed wind speed is 0.18. The mean absolute error was 2.57 / 1.96 m / s, and the root mean square error was 3.40 / 2.65 m / s. The results of wave verification show that the correlation coefficient of effective wave height in August is above 0. 84; In August, the effective wave height during the three typhoons of "Dawei" "sea anemone" and "Brawan", the root mean square error of the simulated wave period and the observed value was between 0.19 and 0.37 m, respectively. The mean absolute error of the wave direction is 19.39 掳~ 37.65 掳, which indicates that the MASNUM wave model can well reproduce the wave condition during the typhoon in Zhejiang. On the basis of numerical simulation and practical observation, further comparative analysis shows that: sea anemone during typhoon. The maximum effective wave height off the coast of Zhejiang is 7.6 m, while the maximum effective wave height is 4.44.4mduring the typhoon "Davi" and "Brawan".
【作者单位】： 宁波大学理学院;国家海洋局第一海洋研究所数值环境科学与数值模拟国家海洋重点实验室;
【基金】：宁波市自然科学基金资助项目(2016A610075) 国家海洋局海洋咨询中心资助项目(HS2015000171)
【分类号】：P731.22;P732
【正文快照】： (1.宁波大学理学院,浙江宁波315211;2.国家海洋局第一海洋研究所、数值环境科学与数值模拟国家海洋重点实验室,山东青岛266061)MASNUM第三代海浪数值模式是基于LAGFD-WAM海浪模式[1]由我国海洋环境科学与数值模拟国家海洋局重点实验室研发的海浪数值模式,模式中考虑了波流相互，

本文编号：1474770