CAJ | 학술논문

基于CCMP(Cross Calibrated Multi-platform)卫星遥感海面风场数据,通过将WAVEWATCH和SWAN (Simulating WAves Nearshore)模型嵌套的方法,数值模拟了珠江口附近海域的风浪场.将总计10个月的数值模拟的有效波高、波周期和波向分别与相应的观测值进行了定量比较.结果说明,有效波高的平均绝对误差为15.4cm,分散系数SI为0.240,相关系数为0.925;波周期的平均绝对误差为1.9s,分散系数 SI 为0.433,相关系数为0.636;波向的平均绝对误差为23.9°.计算的波高和波向与观测结果的变化趋势相吻合.由于第三代海浪模式本身的缺陷,导致所计算的波周期偏小.总体说来,本文所采用的数值模式能较好地模拟珠江口附近海域的风浪场.另外,还设计了6个算例以探讨采用不同的计算方法和风场对计算结果精度的影响.结果表明使用本文的数值方法和高精度的CCMP风场确实可以提高计算结果的精度.
기우CCMP(Cross Calibrated Multi-platform)위성요감해면풍장수거,통과장WAVEWATCH화SWAN (Simulating WAves Nearshore)모형감투적방법,수치모의료주강구부근해역적풍랑장.장총계10개월적수치모의적유효파고、파주기화파향분별여상응적관측치진행료정량비교.결과설명,유효파고적평균절대오차위15.4cm,분산계수SI위0.240,상관계수위0.925;파주기적평균절대오차위1.9s,분산계수 SI 위0.433,상관계수위0.636;파향적평균절대오차위23.9°.계산적파고화파향여관측결과적변화추세상문합.유우제삼대해랑모식본신적결함,도치소계산적파주기편소.총체설래,본문소채용적수치모식능교호지모의주강구부근해역적풍랑장.령외,환설계료6개산례이탐토채용불동적계산방법화풍장대계산결과정도적영향.결과표명사용본문적수치방법화고정도적CCMP풍장학실가이제고계산결과적정도.
@@@@Based on the cross calibrated multi-platform (CCMP), a remotely-sensed sea-surface wind field by NASA, wind wave field near the Pearl River Estuary is simulated with Simulating WAves Nearshore (SWAN) nested in WAVEWATCH. The numerical results of significant wave height, wave period and wave direction are compared with the measured data quantitatively. We find that for significant wave height, the mean absolute error is 15.4 cm, Scatter Index (SI) is 0.240 and the correlation coefficient is 0.925; that for wave period, the mean absolute error is 1.9 s, SI is 0.433 and the correlation coefficient is 0.636; and that for wave direction, the mean absolute error is 23.9°. Therefore, the numerical results are in agreement with the measured wave height and wave direction. However, due to the drawbacks of the third generation wave models, the calculated wave period is shorter than the measured period. Generally, the numerical model used in this paper can simulate the wave field near the Pearl River Estuary effectively. In addition, the influences of different calculation methods&nbsp