Daily Surface Currents in the seas around Japan The data area is from 117E to 159E between 15N and 49N. The currents are determined for 0.1x0.1 degree squares from April 1st, 2008 to the latest. Surface currents are calculated using an ocean data assimilation system, the MOVE/MRI.COM (Usui et al., 2006). Data format: One file contains data for one day. The file consists of 685 lines. The analysis date is recorded on the first line: the information of year is on the first 4 column, that of month is indicated by a number from 1 to 12 on the second 4 column, and that of day on the last 4 column. The GPVs of eastward components are recorded on a 342-line block from 2nd line, and those of northward components on the next block from 344th line. The component information is recorded on the first line of the 342-line block. The GPVs on the grids along 49.05N are recorded on the 2nd line, those along 48.95N are on the 3rd line, and those along 15.05N are on the 342nd line. Each line contains the 421 GPVs from 117.05E to 159.05E at the interval of 0.1 degree in longitude. Each GPV domains 3 columns in the unit of 1 cm/sec, with an offset of 500. User should remove 500 from GPV in order to get the real current component (ex. GPVs of '510' and '490' means 10 cm/sec and -10 cm/sec respectively). The GPV is 999, if the current is not determined or the grid point is on land. Reference: Usui, N., S. Ishizaki, Y. Fujii, H. Tsujino, T. Yasuda, M. Kamachi (2006): Meteorological Research Institute multivariate ocean variational estimation (MOVE) system: Some early results. Advances in Space Research, 37,806-822