Arctic Ocean Monthly Dynamic Ocean Topography derived from the measurements of satellite radar altimeters

In ice-covered ocean such as the Arctic Ocean, it is difficult to obtain spatiotemporal variability of the ocean circulation by in-situ observation alone. This data is the dynamic ocean topography (DOT) estimated by using the sea surface height retrieval from satellite radar altimeters.The DOT defines the stream function of the geostrophic flow in the surface layer. To build this data, we employed the data from CryoSat-2, Jason-2, Jason-3, and Sentinel-3A. Temporal and spatial resolutions are monthly and 50km, respectively.在北冰洋等覆冰海域中，仅依靠原位观测难以获取海洋环流的时空变化特征。本数据集为通过卫星雷达高度计反演海面高度后估算得到的动态海洋地形（Dynamic Ocean Topography，DOT）。该动态海洋地形定义了海洋表层地转流的流函数。本数据集的构建采用了CryoSat-2、Jason-2、Jason-3以及Sentinel-3A的观测数据，其时空分辨率分别为月度与50千米。