Merged satellite and in-situ data Global Daily Sea Surface Temperature (MGDSST_re)

    Merged satellite and in-situ data Global Daily Sea Surface Temperature from 
January 4th, 1985 to the latest. The MGDSSTs are analyzed at the Office of Marine 
Prediction of the JMA with 1/4-degree grid resolution on the near-real-time basis.

    SSTs derived from satellite's infrared sensors (AVHRR/NOAA) and microwave 
sensor (AMSR-E/AQUA), and in-situ SST (buoy and ship) are used in the analysis.
The NOAA/AVHRR High Resolution Picture Transmission (HRPT) data adjacent to Japan
are received and processed at the Meteorological Satellite Center of the JMA. 
NOAA/AVHRR Global Area Coverage (GAC) data are provided by National Oceanic and
Atmospheric Administration, USA.  
AMSR-E data are provided by the Japan Aerospace Exploration Agency (JAXA).
In-situ SSTs are collected at JMA via GTS, Internet and facsimile, and those are 
used for bias correction of satellites' SSTs.
   
The data name attached "re" means the reanalysis data.

Data format
    The each daily data consists of 721 records, one header record and 
following 720 data records from north to south.  The header record contains
the year, month, and day.  Each data record is written as 1440I3 from west
to east, with unit in 0.1C.   That is, the first value of the first data
record is for the grid centered at 89.875 degree North and 0.125 degree
East, and the last value of the last data record is for that at 89.875 
degree South and 0.125 degree West, respectively. '888' denotes the region of
sea ice, and  '999' the region of land and the value cannot be determined. 

The reanalysis data includes the temperatures even in the region of sea ice.
SSTs under sea ice area are determined according to the statistical relation between sea-ice concentration and SST.
The SST is the lowest of -1.8 degree Celsius where the sea-ice concentration is 100%.


For further information, please contact the Regional Real Time Data Base at 
neargoos@climar.kishou.go.jp