Data set of oceanic 3-D eddies for 3D-U-Res-Net

The sea surface geostrophic currents data in the Northwestern Pacific Ocean (15°N – 35°N, 120°E – 145°E) from 2000 to 2008, which are linearly interpolated into 16 vertical layers, are included in this data set of AI-based detection of oceanic 3D eddies.Numerical results from the Regional Ocean Modeling System (ROMS) in the domain spanning 9°S – 41°N and 99°E – 145.75°E are used in this study. The model is forced by spatially and temporally varying heat fluxes and wind at the sea surface. Based on the bulk formula, the heat fluxes are calculated from 2-m air temperature and absolute humidity, skin temperature, rainfall rate, and upward/downward long- and short-wave radiation fluxes, which are obtained from the NCEP/NCAR Reanalysis 1 daily atmospheric dataset. The forcing wind field is a blended dataset of NCEP/NCAR Reanalysis 1 wind field and the QuikSCAT wind measurement data. The initial field ocean temperature, salinity, currents and sea surface height are from the Simple Ocean Data Assimilation (SODA) products. The western boundary of the domain is closed, while the three other boundaries are open. The Chapman scheme (Chapman, 1985) and the radiation scheme (Orlanski, 1976; Raymond and Kuo, 1984) are specified at the baroclinic and the baroclinic open boundaries, respectively. The model adopts a warm start. The horizontal spatial resolution is 1/12°, with a 32-layer sigma coordinate in the vertical direction. The K-Profile parameterization mixing scheme is adopted in the model. The model settings and the 3D eddy detection results can be found in Lin et al. (2015).

本数据集涵盖2000年至2008年西北太平洋（15°N – 35°N，120°E – 145°E）区域的海面地转流数据，该数据经线性插值处理得到16个垂直层，用于基于人工智能（AI）的海洋三维涡旋检测研究。本研究采用区域海洋模式系统（Regional Ocean Modeling System, ROMS）在覆盖9°S – 41°N、99°E – 145.75°E的计算区域内得到的数值模拟结果。该模式的强迫场包含时空变化的海面热通量与风场：其中热通量基于整体通量公式，由2米高度气温、比湿、海表皮肤温度、降雨量以及上下行长短波辐射通量计算得到，上述气象要素均取自NCEP/NCAR再分析1号（NCEP/NCAR Reanalysis 1）逐日大气数据集；强迫风场则融合了NCEP/NCAR再分析1号风场与QuikSCAT风场观测数据。模式初始场的海洋温度、盐度、流场及海面高度取自简单海洋数据同化（Simple Ocean Data Assimilation, SODA）产品。模式区域的西边界为闭边界，其余三边均为开边界，两类开边界分别采用Chapman方案（Chapman, 1985）与辐射方案（Orlanski, 1976; Raymond and Kuo, 1984）。模式采用暖启动方式，水平空间分辨率为1/12°，垂直方向采用32层σ坐标。模式中采用K剖面参数化混合方案。本研究的模式设置与三维涡旋检测结果详见Lin等人（2015）的研究。