标题： 不耦合的高纬度波浪模型在COAMPS中 显示英文标题

标题： Uncoupled high-latitude wave models in COAMPS

摘要： 本报告描述了两个数值海洋波浪模型在高纬度区域的六个示范案例，这些区域中波浪与海冰相互作用。 两个波浪模型是SWAN（近岸模拟波浪）和WW3（WAVEWATCH III），在海军的耦合区域建模系统COAMPS(R)（耦合海洋大气中尺度预测系统）中以非耦合模式运行。 COAMPS软件处理波浪模型设置、运行和后处理的大部分任务。 所有六个案例都是每12小时增量的循环运行，每个案例提供持续4至26天的连续历史模拟。 SWAN应用于白令海峡案例和两个波罗的海湾案例。 WW3应用于鄂霍次克海案例和两个巴伦支海案例。 通过视觉检查模型输出场以及将模型运行结果与替代设置进行比较来进行验证。 在标准配置中，强迫数据来自存档的全球模型输出，包括表面风矢量、海冰浓度和厚度以及表面电流矢量，波浪模型使用了一种新的海冰导致波浪能量耗散的经验公式，该公式依赖于海冰厚度。 巴伦支海案例与挪威气象研究所部署在冰上的运动传感器以及CFOSAT上的SWIM仪器的卫星谱波数据进行了比较。 进行了非标准设置的实验，1）禁用海冰导致的耗散，2）使用一种旧的海冰导致耗散公式，该公式不依赖于海冰厚度，3）使用更高分辨率的风和海冰浓度强迫场，4）省略表面电流。 这些设置对模型技能的影响通过与观测结果的比较进行量化。 还将模型技能与全球（因此分辨率较低）海洋波浪模型的结果进行了比较。 显示英文摘要

摘要： This report describes six demonstration cases of two numerical ocean wave models in high latitude regions where waves interact with sea ice. The two wave models are SWAN (Simulating WAves Nearshore) and WW3 (WAVEWATCH III), run in uncoupled mode within the Navy's coupled regional modeling system, COAMPS(R) (Coupled Ocean Atmosphere Mesoscale Prediction System). The COAMPS software handles a large majority of the tasks associated with the setup, running, and post-processing of the wave models. All six cases are cycling runs with 12-hour increments, each providing a continuous hindcast of four to 26 days duration. SWAN is applied in a Bering Strait case and two Gulf of Bothnia cases. WW3 is applied in a Sea of Okhotsk case and two Barents Sea cases. Verification is performed by visual inspection of model output fields, and by comparing model runs with alternative settings. In the standard configuration, forcing comes from archived global model output, including information on surface wind vectors, sea ice concentration and thickness, and surface current vectors, and the wave model uses a new empirical formula for dissipation of wave energy by sea ice that is dependent on ice thickness. The Barents Sea cases are compared to spectral wave data from satellite (SWIM instrument on CFOSAT) and from motion sensors deployed on the ice by the Norwegian Meteorological Institute. Experiments are performed with non-standard settings, 1) disabling the dissipation by sea ice, 2) using an older formula for dissipation by sea ice which does not depend on ice thickness, 3) using higher resolution wind and sea ice concentration forcing fields, and 4) omitting surface currents. The impact of these settings on model skill is quantified by comparison to the observations. The skill is also compared to that from a global (thus, lower resolution) ocean wave model.