Numerical model data underlying the publication: The evolution of plume fronts in the Rhine region of freshwater influence

This data set presents numerical model data that has been used in the study "the evolution of plume fronts in the Rhine region of freshwater influence". We used the numerical FLOW module of Delft3D. The model domain covers the southern North Sea by using four nested grids: course, intermediate, fine, extra-fine. This model is an adjusted version of the ZUNO-DD model created by Deltares. The two selected model periods, a calm neap and spring period, coincide with the STRAINS experiment off the Dutch coast in September 2014. The model output contains waterlevel, salinity, temperature, four tracer concentrations, vertical eddy viscosity, horizontal and vertical velocities. The model data is in the time zone UTC+1 and the coordinates are in the Rijks-Driehoek (RD) system, which is a Dutch coordinate system. The vertical grid consists of twenty non-equidistant sigma layers. Additionally, front trajectories and frontogenesis terms are uploaded too (corresponding to Figures 11, 14 and 15).

本数据集提供了已应用于研究《莱茵河淡水影响区羽状锋演化》的数值模型数据。本次研究采用Deltares开发的Delft3D平台的FLOW数值模块。模型通过四层嵌套网格覆盖南北海海域，依次为粗网格、中等网格、精细网格与超精细网格。本模型是基于Deltares研发的ZUNO-DD模型调整得到的版本。所选的两个模拟时段分别为平静小潮期与大潮期，与2014年9月荷兰海岸外开展的STRAINS实验时段完全匹配。模型输出变量包含水位、盐度、温度、四种示踪剂浓度、垂向涡动黏度、水平与垂向流速。模型数据采用UTC+1时区，坐标系统为荷兰专用的国家三角测量（Rijks-Driehoek，RD）系统。垂向网格由20层非等间距σ坐标层构成。此外，数据集还附带了锋面轨迹与锋生项数据（对应图11、图14及图15）。