GCOM-W/AMSR2 L3 Sea Surface Temperature (1-Month, 0.1 deg)

Furthermore, Level 3 processing takes one month's worth of each geophysical parameter's Level 3 daily statistical mean values and calculates the monthly statistical mean value at each grid point using a simple arithmetic mean in the same way as the daily statistical mean calculation. The statistical means are calculated separately for observations along the satellite's ascending and descending tracks. This dataset includes MonthMean Sea Surface Temperature (SST), Standard Deviation (Standard_Deviation), Average Number (Average_Number) and Total Number (Total_Number).

SST is temperature of water at ocean surface. Coverage of the product is over the ocean only, and unit is [degree]. Its horizontal resolution is about 20-30 km and coarser than that of optical instruments.

Microwave radiometer, however, can observe ocean surface through clouds, and monitor continuous change of sea surface temperature over the ocean where few clear region can be found in specific areas or seasons. Standard_Deviation is standard deviation value for each pixel. This item is only stored in monthly product.

Average_Number is the number of valid physical quantity data (except error and missing) which was used to determine "Geophysical Data". Total_Number is the number of physical quantity data included in the grid (include valid and invalid). The provided format is HDF5.

The Sampling resolution is 0.1degree grid. The statistical period is 1 month. The current version of the product is Version 4.

The Version 3 is also available. The projection method is EQR. The generation unit is global.