NASA CIOSS Project

The Gridded Altimeter Fields with Enhanced Coastal Coverage data product contains Sea Surface Height Anomalies (SSHA or SLA) and zonal and meridional geostrophic velocities for the US west coast encompassing 35.25 deg-48.5 deg N latitude and 227.75 deg-248.5 deg E longitude. This annually updated data product extends from October 14, 1992 through November 4, 2009. SSHA and current velocities are derived from the AVISO quarter degree DT UPD MSLA version 3.0 grids, 0.75 deg and greater away from the coast. Values within 0.75 deg of the coast are derived from tide gauge observations and interpola...本增强海岸覆盖范围的网格化测高场数据集产品（Gridded Altimeter Fields with Enhanced Coastal Coverage）涵盖海面高度异常（Sea Surface Height Anomalies，简称SSHA或SLA）以及覆盖美国西海岸的纬向与经向地转流流速数据，其覆盖范围为北纬35.25°至48.5°、东经227.75°至248.5°的海域。该数据集按年度更新，时间跨度为1992年10月14日至2009年11月4日。在距离海岸0.75°及以外的区域，海面高度异常与流场流速数据源自AVISO四分之一分辨率DT UPD MSLA 3.0版本网格化数据集；在距离海岸0.75°以内的区域，相关数据则基于验潮站观测数据及插值方法得到（原文内容未完整展示）。