Following a study of the prototype SYNERGY processing chain, it has been decided to combine the SYNERGY Level-1 and Level-2 processing chains in global software. This solution improves the time performance of the SYNERGY algorithm, reduces redundancy and suppresses the dependency between the SYN Level-2 product and the VGT algorithm.

This global software will process SLSTR and OLCI Level-1 products and will provide several types of products:

• SYN Level-1 product
• SYN Level-2 product
• VGT-P product
• VGK (a new product, defined as input to the VGT-S process)

Note: in the frame of coming evolutions, a global aerosol over Ocean and Land pixels, will be included in SYN global processing in order to provide near real-time data suitable for assimilation within numerical weather prediction models, and with potential to provide timely warnings related to air quality and visibility.

This modification will imply updates in Level 1 processing (to include Ocean pixels) and in Level 2 processing.