Minimize Product Types

Sentinel-2 products available for users (either generated by the ground segment or by the Sentinel-2 Toolbox) are listed in Table 1.

Table 1: Sentinel-2 product types

Name High-level Description Production & Distribution Data Volume
Level-1C Top-of-atmosphere reflectances in cartographic geometry Systematic generation and on-line distribution 500 MB (each 100x100 km2)
Level-2A Bottom-of-atmosphere reflectance in cartographic geometry (prototype product) Generation on user side (using Sentinel-2 Toolbox) 600 MB (each 100x100 km2)

Products are a compilation of elementary granules of fixed size, within a single orbit. A granule is the minimum indivisible partition of a product (containing all possible spectral bands).

For Level-1C and Level-2A, the granules, also called tiles, are 100x100km2 ortho-images in UTM/WGS84 projection. The UTM (Universal Transverse Mercator) system divides the Earth's surface into 60 zones. Each UTM zone has a vertical width of 6° of longitude and horizontal width of 8° of latitude. (see Figure 1). Tiles are approximately 500 MB in size. Tiles can be fully or partially covered by image data. Partially covered tiles correspond to those at the edge of the swath.

Figure 1: Level-1C product tiling

All granules, required in the user's Area of Interest (AOI), are included in the delivered product.

The Payload Data Ground Segment (PDGS) is responsible for the systematic processing and archiving of Sentinel-2 up to Level-1C.

The continuous acquisition of Sentinel-2 image data in a given MSI mode is called a "datatake". The maximum length of an imaging datatake is 15,000 km (e.g. continuous observation from northern Russia to southern Africa). All products contain granules/tiles from a single datatake. A datatake is presented inside a product as a set of one or more datastrips (corresponding to acquisition segments downlinked to different ground stations).