Is there a repository of known problems with the AATSR data processing/products that can be consulted before raising queries with the helpdesk?
Disclaimers addressing issues affecting AATSR product quality are published at http://envisat.esa.int/dataproducts/availability/ . Q What value of cone angle was used to define the edge of the swath air mass when the AATSR SST coefficients were derived? Could differences in this parameter between data sets explain discrepancies in retrieved SST? The auxiliary file of SST coefficients used by the Level 2 processor includes distinct coefficients for each of 38 across-track distances. The process by which these 38 sets of coefficients are generated involves first deriving two sets of coefficients, for the swath centre and swath edge, and then computing intermediate values by linear interpolation with respect to air mass. (Here the air mass refers to the normalised length of the atmospheric path traversed by the line of sight – essentially the secant of the angle of incidence at the pixel.) The air mass at the swath centre is unity (that is the normalisation), but that at the edge depends
Related Questions
- Is there a repository of known problems with the AATSR data processing/products that can be consulted before raising queries with the helpdesk?
- Questions on data processing and products Data Processing Q Which version of the AATSR IPF was used to produce my data?
- Are there any known caveats for the 2A12 and 3A12 data products?
