NASA AVISO Project

This dataset contains absolute dynamic topography (similar to sea level but with respect to the geoid) binned and averaged monthly on 1 degree grids. The coverage is from October 1992 to December 2010. These data were provided by AVISO (French space agency data provider) to support the CMIP5 (Coupled Model Intercomparison Project Phase 5) under the World Climate Research Program (WCRP) and was first made available via the JPL Earth System Grid. The dynamic topography are derived from sea surface height measured by several satellites including Envisat, TOPEX/Poseidon, Jason-1 and OSTM/Jason-2, ...本数据集包含绝对动态地形（absolute dynamic topography），其与海平面高度类似，但以大地水准面（geoid）为参考基准。数据以1度网格为单元进行分箱并按月求取平均，时间覆盖范围为1992年10月至2010年12月。该数据集由AVISO（法国航天局数据提供商）提供，用于支持世界气候研究计划（World Climate Research Program, WCRP）框架下的CMIP5（耦合模式比较计划第五阶段，Coupled Model Intercomparison Project Phase 5），并首次通过JPL地球系统网格（JPL Earth System Grid）对外发布。该绝对动态地形数据源自多颗卫星观测获取的海面高度，涵盖Envisat、TOPEX/Poseidon、Jason-1以及OSTM/Jason-2等卫星。