Sentinel-2 L2A

About Sentinel-2 L2A Data

Mission Information

Dedicated to supplying data for Copernicus services, Sentinel-2 is carrying a range of technologies, such as multi-spectral imaging instruments for land, ocean and atmospheric monitoring. It's is delivering high-resolution optical images for land monitoring, emergency response and security services. The satellite's multispectral imager provides a versatile set of 13 spectral bands spanning from the visible and near infrared to the shortwave infrared.

More information:

Basic Facts

Spatial resolution10 m, 20 m, and 60 m depending on wavelength
SensorMultiSpectral Instrument (MSI), 13 bands: 4 visible bands, 6 Near-Infrared bands, and 3 Short-Wave Infrared bands
Revisit time5 days
Spatial coveragelink
Data availabilitySince November 2015
MeasurementBottom of the atmosphere (BOA) reflectance, processed from L1C with Sen2Cor
Common usage/purposeLand-cover maps, land-change detection maps, vegetation monitoring, monitoring of burned areas

Attribution and Use

EU law grants free access to Copernicus Sentinel Data and Service Information for the purpose of the following use in so far as it is lawful: a) reproduction; b) distribution; c) communication to the public; d) adaptation, modification and combination with other data and information; e) any combination of points a to d.

See more details on the use of Copernicus Sentinel data and service information

Tracing based on Sentinel imagery is allowed for commercial purposes as well.

Acknowledgment or credit: Contains modified Copernicus Sentinel data [Year] processed by Sentinel Hub

Accessing Sentinel-2 L2A Data

To access data you need to send a POST request to our process API. The requested data will be returned as the response to your request. Each POST request can be tailored to get you exactly the data you require. To do this requires setting various parameters which depend on the datasource you are querying. This chapter will help you understand the parameters for S2L2A data. To see examples of such requests go here, and for an overview of all API parameters see the API Reference.

Endpoint Locations

ServiceNotes since November 2016
Global since December 2018

Data type identifier: S2L2A

Use S2L2A as the value of the parameter in your API requests. This is mandatory and will ensure you get Sentinel-2 L2A data.

Filtering Options

This chapter will explain the object of the S2L2A process API.


Sets the order of overlapping tiles from which the output result is mosaicked. Note that tiles will in most cases come from the same orbit/acquisition. The tiling is done by ESA for easier distribution.

mostRecentselected by default. The pixel will be selected from the tile, which was acquired most recentlyin case there are more tiles available with the same timestamp (some tiles are processed by many ground stations, some are reprocessed, etc.), the one, which was downloaded from SciHub later will be used.
leastRecentsimilar to mostRecent but in reverse order
leastCCpixel is selected from tile with the least cloud coverage meta-datanote that "per tile" information is used here, each covering about a 12,000 sq. km area, so this information is only an estimate .


Sets the upper limit for cloud coverage in percent based on the precomputed cloud coverage estimate for each Sentinel-2 tile as present in the tile metadata. Satellite data will therefore not be retrieved for tiles with a higher cloud coverage estimate. For example, by setting the value to 20, only tiles with at most 20% cloud coverage will be used. Note that this parameter is set per tile and might not be directly applicable to the chosen area of interest.


Sentinel Hub API is optimised for full resolution data access as this is what most users need. While the Sentinel-2 L1C has low-resolution previews generated, this is not yet the case for Sentinel-2 L2A. Lower resolution processing is enabled by default, but the performance degrades after going beyond 250m per pixel (up to 1500m per pixel).

DETAILdisplays original data from full-resolution to 1500m per pixel

Processing Options

This chapter will explain the object of the S2L2A process API.

upsamplingDefines the interpolation used for processing when the pixel resolution is greater than the source resolution (e.g. 5m/px with a 10m/px source)NEAREST - nearest neighbour interpolation
BILINEAR - bilinear interpolation
BICUBIC - bicubic interpolation
downsamplingAs above except when the resolution is lower.NEAREST - nearest neighbour interpolation
BILINEAR - bilinear interpolation
BICUBIC - bicubic interpolation

A visual representation of upsampling results using various algorithms is available here.

Available Bands and Data

This chapter will explain the bands and data which can be set in the evalscript input object.

  • Any string listed in the column Name can be an element of the input.bands array in your evalscript.
  • For optical bands, REFLECTANCE or DN (digital numbers) can be set as the value of input.units in your V3 evalscript. For Sentinel-2 data, the relation between both units is: DN = 10000 * REFLECTANCE The data for these bands will be presented in the specified units for further manipulation in your evalscript. The default is REFLECTANCE.
B01Coastal aerosol, 442.7 nm (S2A), 442.3 nm (S2B)60mREFLECTANCE, DN
B02Blue, 492.4 nm (S2A), 492.1 nm (S2B)10mREFLECTANCE, DN
B03Green, 559.8 nm (S2A), 559.0 nm (S2B)10mREFLECTANCE, DN
B04Red, 664.6 nm (S2A), 665.0 nm (S2B)10mREFLECTANCE, DN
B05Vegetation red edge, 704.1 nm (S2A), 703.8 nm (S2B)20mREFLECTANCE, DN
B06Vegetation red edge, 740.5 nm (S2A), 739.1 nm (S2B)20mREFLECTANCE, DN
B07Vegetation red edge, 782.8 nm (S2A), 779.7 nm (S2B)20mREFLECTANCE, DN
B08NIR, 832.8 nm (S2A), 833.0 nm (S2B)10mREFLECTANCE, DN
B8ANarrow NIR, 864.7 nm (S2A), 864.0 nm (S2B)20mREFLECTANCE, DN
B09Water vapour, 945.1 nm (S2A), 943.2 nm (S2B)60mREFLECTANCE, DN
B11SWIR, 1613.7 nm (S2A), 1610.4 nm (S2B)20mREFLECTANCE, DN
B12SWIR, 2202.4 nm (S2A), 2185.7 nm (S2B)20mREFLECTANCE, DN
AOTAerosol Optical Thickness map, based on Sen2Cor processor10mREFLECTANCE, DN
SCLScene classification data, based on Sen2Cor processor, codelist20m0 - No data
1 - Saturated / Defective
2 - Dark Area Pixels
3 - Cloud Shadows
4 - Vegetation
5 - Bare Soils
6 - Water
7 - Clouds low probability / Unclassified
8 - Clouds medium probability
9 - Clouds high probability
10 - Cirrus
11 - Snow / Ice
SNWSnow probability, based on Sen2Cor processor20m%, [0,100]
CLDCloud probability, based on Sen2Cor processor20m%, [0,100]
CLPCloud probability, based on s2cloudless (more)160mProbabilities as [0,255]
CLMCloud masks (more)160m0 - no clouds
1 - clouds
255 - no data
sunAzimuthAnglesSun azimuth angle5000mdegrees
sunZenithAnglesSun zenith angle5000mdegrees
viewAzimuthMeanViewing azimuth angle5000mdegrees
viewZenithMeanViewing zenith angle5000mdegrees
dataMaskThe mask of data/no data pixels (more).N/A*0 - no data
1 - data

*dataMask has no source resolution as it is calculated for each output pixel.

Note: The cirrus band B10 is excluded as it does not contain any "bottom of the atmosphere" information (Source: Sen2Cor Configuration and User Manual).


All mosaicking types are supported.

Scene Object

This chapter will explain the evalscript evaluatePixel scene object.

The same as for S2L1C.

Dataset Specific Constraints

  • Each Sentinel-2 satellite takes 100.6 minutes for an entire orbit, with S2A and S2B orbiting 180 degree apart. By setting a time interval to less than 50 minutes, there should be no overlap possible between different acquisitions, even near the poles.
  • For atmospheric correction, ESA's official Sen2Cor is used. In most cases the processing is done by ESA itself. On users' request we can also process some archive data using the same processor.

Catalog API Capabilities

To access Sentinel 2 L2A product metadata you need to send search request to our Catalog API. The requested metadata will be returned as JSON formatted response to your request. This chapter will help with understanding Sentinel 2 L2A specific parameters for search request.

Endpoint Locations

ServiceNotes since November 2016
Global since December 2018

Collection identifier: sentinel-2-l1c

Query extension

  • eo:cloud_cover cloud cover percentage

Distinct extension

  • date


S2L2A examples.