Data Versions

The following information summarizes the differences between Version 1 and Version 2 AMSR/ADEOS-II data.

Processing and Algorithm History

Version 2 Data

AMSR-L1A:

This improved algorithm features empirical corrections to the Aqua scan azimuth and satellite flight direction. With corrected sun azimuth, sun elevation, earth azimuth, and earth incidence angles, the geometric accuracy of AMSR 89 GHz data improved to within 2 km, compared to Version 1 AMSR-L1A data.

Version 1 Data

AA-L2A:

V01: Original version of data algorithm. V01 refers to the product maturity code, where V indicates that the product is validated. Products are upgraded to Validated status once the algorithm is verified by the algorithm team and validated by the validation teams.

Temporal Coverage of AMSR/ADEOS-II Data by Algorithm

Temporal coverage dates are reported in Table 2 as yyyy-mm-dd for the four-digit year, two-digit month, and two-digit day, respectively. Times are reported in Coordinated Universal Time (UTC), where hh:mm is the two-digit hour followed by the two-digit minute.