The Gridded Surface Temperature (GST) Product is the Level 2 full resolution geophysical product.
It contains a single measurement data set the content of which is switchable, that is to say, the content of each pixel field will depend on the surface type. Specifically, the contents of the data fields will depend on the setting of the forward and nadir cloud flags and the land flag.
The principal annotation data sets from the GBTR product from which the GST is derived are also included in this product.
This product is a continuation of ERS ATSR data.
The 3rd reprocessing of AATSR data was performed in 2013; the processing updates that have been put in place and the scientific improvements are outlined in full in the User Summary Note for the Third Envisat AATSR Reprocessing.