The Level 1 and Level 2 processing was performed by RAL, using the components of the Archive Product Processor developed with funding from DECC. The SST L2P and L3U data were processed using the same ARC-based processor as was used for AATSR.
The processor configuration used in the Third Reprocessing of ATSR-1 data is:
Auxiliary datafiles for ATSR-1 are available here.
(If downloading, note that some ADF names are not unique within the (A)ATSR multimission dataset)