10-day mean Sea Surface Temperatures in the western north Pacific Term: from February 2017 to latest Area: 0.0 - 60.0N, 100.0E - 180.0, 0.1 degree x 0.1 degree Method: HIgh resolution Merged satellite and in-situ data Sea Surface Temperature (HIMSST) Explanation: The HIMSST is/was analyzed based on SSTs derived from geostationary satellite's sensor (Himawari-8 and -9/AHI), polar orbiting satellite's infrared sensors (NOAA/AVHRR, MetOp/AVHRR, and NPP/VIIRS), microwave sensors (Coriolis/WINDSAT and GCOM-W/AMSR-2), and in-situ platform (buoys and ships). The Himawari-8 and -9/AHI data and NOAA/AVHRR High Resolution Picture Transmission (HRPT) data of the area adjacent to Japan are/were received and processed at the Meteorological Satellite Center of JMA. NOAA/AVHRR and MetOp/AVHRR Global Area Coverage (GAC) data and NPP/VIIRS Level3 data are/were provided by National Oceanic and Atmospheric Administration, USA. AMSR-2 data are provided by the Japan Aerospace Exploration Agency (JAXA). In-situ SSTs are collected at JMA via GTS, the Internet, and facsimile, and those are used for correction of biases in satellite SSTs. 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. In this directory, 10-day normals are also available, which are based on the interpolation of MGDSST normals calculated for a 30-year period from 1991 to 2020. Data Format: One data file consists of 601 records, one header record and 600 data records. The header record contains the year, month, and [early/middle/late] of month in four digits each from the left. Each data record includes 800 grid point values and each value is written in three digits from west to east, with unit in 0.1 degree Celsius. Data records are arranged from north to south. That is, the first value of the first data record is for the grid centered at 59.95N and 100.05E, and the last value of the last data record is for that at 0.05N and 179.95E, respectively. '888' denotes the region of sea ice only in real time data, and '999' the region of land and the value cannot be determined. For further information, please contact to administrator of the Regional Real Time Data Base at neargoos@climar.kishou.go.jp.