Processing Level
| Processing Level | Definition |
|---|---|
| Level 1B (L1B) | A scene *2 data product that stores the brightness temperature converted from the Level 1A antenna temperature using the conversion coefficients. (Swath data *1) |
| Level 1R (L1R) | A scene *2 data product that stores the brightness temperature that is spatially resampled from Level 1B to match the center position and size of the Field of View (FOV) of each frequency band at each pixel. (Swath data *1) |
| Level 2 (L2) | A scene *2 data product that stores a physical data retrieved from the brightness temperature at each pixel. (Swath data *1) |
| Level 3 (L3) | A grid data product *3 that stores the brightness temperature or physical data converted using grid processing and temporally statistical processing. |
- Swath data is a format in which data for each footprint is stored in a two-dimensional array (observation points in scanning direction x number of scanning lines) in order of observation time. In addition to data such as brightness temperature and geophysical quantity, quality information, latitude and longitude are stored in Swath format.
- The standard L1B, L1R, and L2 products are stored in a single file with one scene covering half the circumference of the earth. There are two types of scenes: ascending orbit from south to north and descending orbit from north to south.
- L3 products are available in daily and monthly products for ascending and descending orbits. The L3 brightness temperature product contains one file for each frequency band, each containing data for both vertical and horizontal polarization. The L3 geophysical product is a file for each geophysical quantity and contains the relevant geophysical quantity data.
