The Data Access Portfolio Document defines the datasets made available to Copernicus Users in response to their requirements. The complete data offer is described in the Copernicus data access portfolio.

This section describes the Sentinel mission contribution to the applicable data offer; there are 2 types of datasets:

• CORE datasets: predefined, fixed large data collections for specific applications like sea ice monitoring over predefined areas or European wide land cover assessment; Access to Sentinel data within CORE datasets can be obtained via subscription
• ADDitional (ADD) Datasets: flexible, on-demand part of the data offer covering multiple and last minute requirements, like observations over volcanoes and emergency events. They represent a large volume of EO data classified by resolution type to cover Copernicus user flexible specifications, e.g. geographical area, processing levels, lead times, delivery mechanisms etc.

More information is available in the Data Access Portfolio (DAP).