Current veolcity from SOFAR float PL1D

Processing method: interpolated, velocity algorithm: backward differencing. Data have been checked by the WOCE Subsurface Float Data Assembly Center. See hdl:10013/epic.32931.d001 for further information.处理方法：插值法，速度算法：逆向差分法。数据已由世界海洋环流实验（WOCE）次表层漂流浮标数据汇编中心进行核实。欲了解更多信息，请参阅hdl:10013/epic.32931.d001。