10-day mean Surface Currents around Japan Term: from January 1982 to latest Area: 15.05N - 49.05N, 117.05E - 159.05E, 0.1 degree x 0.1 degree Method: Meteorological Research Institute Multivariate Ocean Variational Estimation system (MOVE/MRI.COM) Explanation: Surface currents are estimated by the numerical ocean data assimilation model (Usui et al., 2006). Data Format: One data file consists of 685 records, one header record and 684 data records. The header record contains the year, month, and [early/middle/late] of month in four digits each from the left. The surface currents are divided into the zonal and meridional component and the grid point values (GPVs) of the zonal one are stored on a 342-record block from 2nd record, those of the meridional one on the next block from 344th record. The direction information is stored on the first record of each 342-record block. Where eEastward_Componentfand eNorthward_Componentfare designate eastward and northward component with a positive value, respectively. The GPVs along 49.05N are stored on the 2nd record of the block, those along 48.95N are on the 3rd record of the block, and those along 15.05N are on the 342nd record of the block. Each record contains the 421 GPVs from 117.05E to 159.05E at the interval of 0.1 degree in longitude. Each GPV domains four digits in the unit of 1 cm/sec. The GPV is 9999, if the current is not determined or the grid point is below the bottom of the ocean. Here, the '10-day' is determined as follows. Three '10-day' analyses are made in each month, and the first 10-day is from the first to the 10th day of the month, the second is from 11th to 20th and the third is from 21st to the last day of the month. References: 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 For further information, please contact to administrator of the Regional Real Time Data Base at neargoos@climar.kishou.go.jp.