南玛都台风期间平潭湾风浪及风暴增水数值模拟

摘要

选用WRF大气模式模拟风场及气压场，利用第三代近岸海浪数值模型SWAN与潮流模型AD⁃CIRC的耦合模型，对福建平潭地区在1111号“南玛都”台风期间的风浪及湾内风暴增水过程进行模拟。台风过境期间，平潭湾内增水最大1 m，波高可达4.5 m，计算结果与实测资料吻合较好，验证了模型在该区域内的合理性。结果表明，WRF模式能有效地反映的大气条件真实情况，选用Ferrier微物理过程及KF积云方案能更好地模拟该台风过程。%Atmospheric model WRF was employed to provide the wind velocity and atmospheric pressure. A coupled model of SWAN and ADCIRC was used to simulate the wave growth and the process of storm surge in Ping⁃tan Bay during the typhoon Nanmadol. The modeled result of the maximum surge in Pingtan Bay was 1 meter and wave height reached up to 4.5 meters during storm process. Good agreement was achieved between the numerical re⁃sults and observation. According to the verification results of wind velocity, the Ferrier scheme is slightly superior to the other 5 schemes and reasonable results of wind field can be obtained by using this model.