We are pleased to announce the publication of three handbooks related to Sentinel-3 OLCI, SLSTR and Synergy land products. These handbooks aim at giving key information to users and address the following topics:

• Principle of acquisition for the three instruments
• Description of the algorithms and the processing levels
• Description of the products and an overview of the data quality

The handbooks also include a Helpdesk section providing answers to most common questions, useful links about the Sentinel-3 mission and instruments, and information on how to get additional support.

These three handbooks are available in the User Guides:

• Sentinel-3 OLCI Land Handbook
• Sentinel-3 SLSTR Land Handbook
• Sentinel-3 Synergy Land Handbook