NASA OSCAR Project

Ocean Surface Current Analyses Real-time (OSCAR) is a global surface current database and NASA funded research project. OSCAR ocean mixed layer velocities are calculated from satellite-sensed sea surface height gradients, ocean vector winds, and sea surface temperature gradients using a simplified physical model for geostrophy, Ekman, and thermal wind dynamics. Daily averaged surface currents are provided on a global 0.25 x 0.25 degree grid as an average over an assumed well-mixed top 30 m of the ocean from 1993 to present day. OSCAR currents are provided at three quality levels: final, interi...实时海洋表层流分析（Ocean Surface Current Analyses Real-time, OSCAR）是一款全球表层流数据库，同时也是由美国国家航空航天局（NASA）资助的研究项目。OSCAR海洋混合层流速通过针对地转、埃克曼（Ekman）和热成风动力学的简化物理模型，结合卫星探测的海面高度梯度、海洋矢量风场以及海面温度梯度计算得到。该数据集提供空间分辨率为0.25×0.25度网格的全球每日平均表层流数据，其数值为1993年至今海洋表层假定充分混合的30米深度范围内的平均流速。OSCAR表层流数据分为三个质量等级：最终级、中间级（interi...）