A set of rapid-response models for pollutant dispersion assessments in southern Spain coastal waters

Three rapid-response Lagrangian particle-tracking dispersion models have been developed for southern Spain coastal waters. The three domains cover the Gulf of Cádiz (Atlantic Ocean), the Alborán Sea (Mediterranean), and the Strait of Gibraltar with higher spatial resolution. The models are based on different hydrodynamic submodels, which are run in advance. Tides are calculated using a 2D barotropic model in the three cases. Models used to obtain the residual circulation depend on the physical oceanography of each region. Thus, two-layer models are applied to Gibraltar Strait and Alborán Sea and a 3D baroclinic model is used in the Gulf of Cádiz. Results from these models have been compared with observations to validate them and are then used by the particle-tracking models to calculate dispersion. Chemical, radioactive and oil spills may be simulated, incorporating specific processes for each kind of pollutant. Several application examples are provided.     

黄、东海水母质点追踪影响因素分析

基于数值模型采用质点追踪的方法对大型水母的运移规律及其聚集的影响因素进行了研究。本文共设置6个质点释放区,分别从3、4、5月1日释放后追踪至9月30日。主要结论有:(1)采用不含潮汐过程与包含潮汐过程的水动力模式分别对表层质点进行追踪,结果表明含潮汐混合和潮汐非线性效应的POM模式对质点时空分布的模拟较为可靠;(2)基于含潮汐过程的POM模式气候态模拟结果,考虑质点垂直运动进行追踪,质点运移速度较表层追踪大大减慢,进入朝鲜/对马海峡的质点减少;其中济州岛沿岸质点几乎全部穿过朝鲜/对马海峡进入日本海,其它释放区质点最终广泛分布在南黄海以及东海中陆架,主要在黄海潮汐锋区和长江口以南沿岸锋聚集;(3)通过分析不同释放时间对质点在9月末分布的影响发现,质点释放时间偏早,即水母幼体形成较早,将使相对较多的质点向朝鲜/对马海峡聚集。