DATA PRODUCT LEVEL DEFINITION

Level 0

Raw instrument data.

Level 1A

Reconstructed, unprocessed instrument data at full resolution, time referenced, and annotated with ancillary information, including radiometric and geometric calibration coefficients and georeferencing parameters (i.e., platform ephemeris), computed and appended, but not applied, to Level 0 data.

Level 1B

Radiometrically corrected and geolocated Level 1A data that have been processed to sensor units.

Level 2

Derived geophysical parameters at the same resolution and location as those of the Level 1 data.

Level 3

Geophysical parameters that have been spatially and/or temporally resampled from Level 1 or Level 2 data.

Level 4

Outputs or results from models using lower level data as inputs and, thus, not directly derived from the instruments.