Long name | Sentinel-2 |
Short name | STN2 |
Sensor type | Optical |
Platform | Sentinel-2 |
Key file name (use to open data set) | MTD_*.xml, S2A_OPER*.xml, or manifest.safe |
Supported file extensions | *.xml, *.jp2, *.png |
Sections |
Data product name and description |
Data product name and description
Spectral bands: |
Spatial resolution (m)* | Maximum image dimensions |
Notes |
---|---|---|---|
B2 (Blue): 457 - 523 |
10 (B2, B3, B4, B8) |
≈290 (across track) | N/A |
* Resolution is always nadir position unless noted otherwise.
Sentinel-2 is processed at various levels (Level 0, Level 1A, Level 1B and Level 1C); however, only Level 1C and Level 2A are available widely.
Processing level | Horizontal accuracy (m) | Description/notes |
---|---|---|
1C | ≈12.5 (after image processing with control points) | Level 1C products are created by using a digital elevation model (DEM) to project the image in cartographic coordinates.
Level 1C processing includes radiometric and geometric corrections that include orthorectification and spatial registration according to a global reference system with subpixel accuracy. Per-pixel radiometric measurements are provided in top-of-atmosphere (TOA) reflectances with all parameters to convert the pixels into radiances. |
2A | ≈12.5 (after image processing with control points) | Level 2A processing consists of scene classification and atmospheric correction applied to Level-1C ortho-image products.
Level-2A data is a bottom-of-atmosphere (BOA) reflectance ortho-image product. Additional output products include:
|
GDB retrieves four, six, or three bands as three separate groups of image channels in multispectral data grouped by resolution (10 meter, 20 meter, and 60 meter).
Each band is assembled from a list of tiles (known as granules). On opening the data set, depending on the program you use, you may be prompted to select the group of image channels that you want. When all of the product data is in two UTM zones, you may also be prompted to select a zone number. You can select a specific zone with which to load the image bands.
That is, select a key file (MTD_*.xml, S2A_OPER*.xml, or manifest.safe.
Fili="<path><key_file_name>:Band Resolution:10M" Fili="<path><key_file_name>:Band Resolution:20M" Fili="<path><key_file_name>:Band Resolution:60M" Fili="<path><key_file_name>-UTM55:Band Resolution:10M" Fili="<path><key_file_name>-UTM56:Band Resolution:10M"
If the file name is appended with neither a zone nor a resolution, GDB will use the default value. The default value for the UTM zone is the first zone or if there is only one zone, none. The default value for the band resolution is 10 meters.
In cases in which certain granules are missing or damaged, incomplete zones will not be displayed in the band-selection list and only complete zones will be available for display.
File name | Format | Required | Contents/details |
---|---|---|---|
AUX_DATA | Folder | No | Contains set of auxiliary files that can be embedded in the product structure, if selected during download. |
DATASTRIP | Folder | Yes | Multiple folders, each corresponding to the data strip that comprises the product and identified by proper PDI_ID (Datastrip_ID).
Contains:
|
GRANULE | Folder | Yes | Multiple folders, each corresponding to the tiles that comprise the product and identified by proper PDI_ID (Tile_ID).
|
HTML | Folder | No | Contains data used for documents supplied by the vendor. |
rep_info | Folder | No | Contains metadata (*.xsd). |
INSPIRE.xml | Extensible Markup Language | No | Metadata file based on INSPIRE metadata regulation. |
manifest.safe | Safe | No | Product annotations. This is a key file you can use to open the data set. |
*.png | Portable Network Graphic | Optional | Thumbnail image. |
MTD_*.xml (formerley S2*.xml) | Extensible Markup Language | Yes | Key file name. Use this file to open the data set. |
Returned data for supported format
Sentinel-2 data can be opened directly in its raw vendor format or imported into a PCIDSK (*.pix) file by using the key file name (MTD_*.xml, S2A_OPER*.xml, or manifest.safe). For optimal processing, use the PCIDSK format.
The data structure of the data, after it is opened by GDB, is as described in the following tables.
Data product | Data returned | Details |
---|---|---|
Level 1C: 10 meter | 4 x [16U] raster channels |
The main product XML file [TEX] is read as the first text segment.
<No_granule> refers to the number of granules. Metadata of each granule is imported in a separate text file [TEX]. |
Level 1C: 20 meter | 6 x [16U] raster channels |
The main product XML file [TEX] is read as the first text segment. |
Level 1C: 60 meter | 3 x [16U] raster channels |
The main product XML file [TEX] is read as the first text segment. |
Level 2A: 10 meter | 6 x [16U] raster channels |
Contains:
The main product XML file [TEX] is read as the first text segment. |
Level 2A: 20 meter | 14 x [16U] raster channels |
Contains:
The main product XML file [TEX] is read as the first text segment. |
Level 2A: 60 meter | 16 x [16U] raster channels |
Contains:
The main product XML file [TEX] is read as the first text segment. |
Copernicus: Sentinel-2, Sharing Earth Observation Records, eoPortal Directory. European Space agency (ESA).
For more information, visit: Earth Observation Portal
Vendor supplied documentation: Products Specification Document (PSD).pdf
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