Minimize AATSR Cal/Val

Information on the calibration and validation plan and activities are available in these sections.


Cal/Val Plan    |   Calibration Activities   |   Validation Activities

Minimize Calibration Activities

The calibration of AATSR data is led by the Rutherford Appleton Laboratory, who also maintain an AATSR webpage. The latest results are:

  • Thermal channel radiometric uncertainty: < 0.1 K
  • VIS-SWIR channel radiometric uncertainty: < 3 %

Please note that the above are type B estimates of the uncertainty due to systematic effects and not the random noise estimates.


Depending on the products you have, specific corrections may need to be applied to the VIS-SWIR channels in L1B products. Further information can be found here.


Note: these corrections have already been incorporated in the third reprocessing; no further action is required if you have only data from the third reprocessing.


AATSR 12 micron channel

Users should also be aware that there is evidence of a small temperature-dependent discrepancy in AATSR 12 micron Brightness Temperature measurements. This was investigated by an Anomaly Review Board (ARB), who identified the most likely causes and made specific recommendations to take these anomalies into account. The user recommendations from the ARB may be found here. The full ARB Final Report and its Addendum are also available.