Sentinel-2 Data Dictionary

Acquisition Date

• Field Definition:  The acquisition date refers to the day, month, and year the data was acquired.

     Format:

          DD-MMM-YY

          DD = Day

          MMM = Month

          YY = Year

Acquisition End Date

• Field Definition:  The date and time at the end of the data acquisition period in UTC time zone.

Example:

     2015-08-06T10:29:02.804Z

Acquisition Start Date

• Field Definition:  The date and time at the beginning of the data acquisition period in UTC time zone.

Example:

     2015-08-06T10:20:12.461Z

Agency

• Field Definition:  The European Space Agency (ESA) operates Sentinel-2 and provides data for distribution.

Archiving Center

• Field Definition:  The data archive location for the Sentinel-2 data.

     Values:

          SGS_ = Svalbard, Norway Collaborative Ground Segment

          MPS_ = Mas Palomas, Spain Collaborative Ground Segment

          MTI_ = Matera, Italy Collaborative Ground Segment

          EPA_ = Madrid, Spain Processing Archive Centre

          UPA_ = UPA_ = Farnborough, UK Processing Archive Centre

          CDAM = Collaborative Data Access Mirror Centers

          MPC_ = Mission Performance Center/Coordinating Centre

Cloud cover

• Field Definition:  The percentage of the tile obscured by cloud cover.

Coordinates - Decimal Degrees

• Field Definition:  The latitude and longitude are provided in decimal degrees for the following fields:

     Values:

          Tile Center Latitude and Longitude

          Northeast (NE) Corner Latitude and Longitude

          Northwest (NW) Corner Latitude and Longitude

          Southeast (SE) Corner Latitude and Longitude

          Southwest (SW) Corner Latitude and Longitude

 

          Latitude Format Decimal Degrees: -90.000 through 90.000

          Longitude Format Decimal Degrees: -180.000 through 180.000

 

          Number of decimal places will vary by dataset – check collection in EE.

Coordinates - Degrees, Minutes, Seconds

• Field Definition:  The latitude and longitude are provided in degrees, minutes, and seconds for the following fields:

     Values:

          Tile Center Latitude and Longitude

          Northeast (NE) Corner Latitude and Longitude

          Northwest (NW) Corner Latitude and Longitude

          Southeast (SE) Corner Latitude and Longitude

          Southwest (SW) Corner Latitude and Longitude

 

           Longitude Format:

           DDDMMSS.SSH

           DDD = Degree(s) with a range of 0 through 180

           MM = Minute(s) with a range of 0 through 59

           SS.SS = Second(s) with a range of 0 through 59.99

           H = Hemisphere with E for east and W for west

 

          Latitude Format:

           DDMMSS.SSH

           DD = Degree(s) with a range of 0 through 90

           MM = Minutes(s) with a range of 0 through 59

           SS.SS = Second(s) with a range of 0 through 59.99

           H = Hemisphere with N for north and S for south

Data Type

• Field Definition:  The integral data type used in the Level-1C product.

Example:

      UINT16 = 16 bit unsigned integer

Datastrip ID

• Field Definition:  The file name provided by ESA for the Datastrips contained within a Datatake. Multiple tiles may be contained within a Datastrip.

     Format:

           MMM_OPER_MSI_L1C_DS_ssss_yyyymmddthhmmss_SYYYMMDDTHHMMSS_Nxx.yy

           MMM = Mission ID: S2A or S2B

           OPER = File Class (Routine Operations)

           MSI = Sensor (Multi-Spectral Instrument)

           L1C = Processing Level

           DS = Datastrip

           ssss = Site Center

           yyyymmddthhmmss = Creation Date and Time

          S = Validity Start Time

          YYYYMMDDTHHMMSS = Acquisition Start Date and Time

          Nxx.yy = Vendor Software Version/Processing Baseline

     Values:

          ssss = Site Center

          MTI_ = Matera, Italy Collaborative Ground Segment

          SGS_ = Svalbard, Norway Collaborative Ground Segment

          MPS_ = Mas Palomas, Spain Collaborative Ground Segment

          EPA_ = Madrid, Spain Processing Archive Centre

          MPC_ = Mission Performance Center/Coordinating Centre

          UPA_ = Farnborough, UK Processing Archive Centre

          EDRS = EDRS Exploitation Segment

     Example:

          S2A_OPER_MSI_L1C_DS_MTI__20150812T174654_S20150806T102012_N01.03

Datatake Identifier

• Field Definition:  The file name provided by ESA for the continuous acquisition of an image from a SENTINEL-2 satellite in a given MSI imaging mode or a "datatake".

Format:

     GMMM_YYYYMMDDTHHMMSS_Affffff_Nxx.yy

     G = Datatake Identifier

     MMM = Mission ID: S2A or S2B

     YYYYMMDDTHHMMSS = Acquisition Start Date and Time

     Affffff = Absolute Orbit Number

     Nxx.yy = Vendor Software Version

Example:

     GS2A_20150806T102016_000634_N01.03

Datatake Type

• Field Definition:  The Datatake Type identifies the instrument mode during acquisition.

     Values:

          INS-NOBS = Nominal Observation

          INS-EOBS = Extended Observation

          INS-DASC = Dark Signal Calibration

          INS-ABSR = Absolute Radiometry Calibration

          INS-VIC = Vicarious Calibration

          INS-RAW = Raw Measurement

          INS-TST = Test Mode

Datum

• Field Definition:  The horizontal reference system used to map the data.

Example:

     WGS84

Degraded Ancillary Data Percent

• Field Definition:  Percentage of degraded ancillary data.

Degraded MSI Data Percent

• Field Definition:  Percentage of degraded MSI data provided for each Tile.

Entity ID

• Field Definition:  This field describes the naming convention of each file.

     Format:

          MMM_CCCC_MSI_L1C_TL_ssss_yyyymmddThhmmss_YYYYmmddThhmmss_Affffff_Txxxxx_Nxx_yy_vv

          L1C_Txxxxx_Affffff_yyyymmddThhmmss (new format)

 

          MMM = Mission ID: S2A or S2B

          CCCC = File Class: Routine Operations - OPER

          MSI = Sensor (Multi-Spectral Instrument)

          L1C = Processing Level

          TL = Tile

          ssss = Site Center

          yyyymmddThhmmss = Acquisition End Date and Time or Sensing Time for new format

          YYYYmmddhhmmss = Creation Date and Time

          Affffff = Absolute Orbit Number

          Txxxxx = Tile number

          Nxx_yy = Processing Baseline Number

          vv = version number

     Values:

           ssss = Site Center

           MTI_ = Matera, Italy Collaborative Ground Segment

           SGS_ = Svalbard, Norway Collaborative Ground Segment

           MPS_ = Mas Palomas, Spain Collaborative Ground Segment

           EPA_ = Madrid, Spain Processing Archive Centre

          MPC_ = Mission Performance Center/Coordinating Centre

          UPA_ = Farnborough, UK Processing Archive Centre

          EDRS = EDRS Exploitation Segment

     Example:

          S2A_OPER_MSI_L1C_TL_SGS__20151130T023453_20151130T111104_A002288_T52SCC_N02_00_01

          L1C_T01KHU_A007619_20161206T214901 (new format)

EPSG Code

• Field Definition:  The European Petroleum Survey Group (EPSG) code contains the reference system (WGS84) and projection (UTM zone) used to map the data.

Image Reference

• Field Definition:  Sentinel-2 data processed for image refinement by using a Global Reference Image (GRI) as source of Ground Control Points (GCPs) to constrain the geometric model of the images.

     Values:

          Y - image was geometrically refined

          N - image was not geometrically refined

          Null - image refining does not apply (N/A)

Map Projection

• Field Definition:  The map projection applied to the processed archive data (Level-1C).

     Example:

          UTM (Universal Transverse Mercator)

Orbit Direction

• Field Definition:  Direction (ascending or descending) of the ground track of the Sentinel-2 platform at the time corresponding to orbit.

Orbit Number

• Field Definition:  The relative orbit number (1 to 143) within the cycle.

Platform

• Field Definition:  The satellite used to acquire the data.

     Values:

          Sentinel-2A

          Sentinel-2B

Processing Level

• Field Definition:  Sentinel-2 data available for download are processed to Level-1C which includes radiometric and geometric corrections along with ortho-rectification and spatial registration.

Product Format

• Field Definition:  Sentinel-2 image data for the 13 bands are in Geographic Markup Language JPEG2000 (GMLJP2) format.

Product Type

• Field Definition:  Sentinel-2 Multi-Spectral Instrument Level-1C data are available for download.

     Example:

          S2MSI1C

Production Date

• Field Definition:  The date and time for the generation of the Level-1C Product (UTC time zone).

     Example:

          Example: 2015-08-18T10:12:16.000955Z

Quantification

• Field Definition:  Reflectance quantification value (in order to convert digit count into reflectance).

     Example:

          10000

Resolution

• Field Definition:  The distance on the ground represented by one pixel is dependent on the particular spectral band: 4 bands at 10m, 6 bands at 20m, and 3 bands at 60m.

     Values:

          10, 20, 60

Sun Azimuth Angle Mean

• Field Definition:  Mean value containing sun azimuth (horizontal) angle of the tile for all bands.

Sun Zenith Angle Mean

• Field Definition:  Mean value containing sun zenith (vertical) angle of the tile for all bands.

Tile Number

• Field Definition:  Tile number, from the US Military Grid Reference System (MGRS) naming convention, where xxxxx is a fixed string of 5 characters.

     Format:

          Txxxxx

     Example:

          T15SWC

Units

• Field Definition:  The unit of measurement associated with the resolution.

     Values:

          Meter

UTM Zone

• Field Definition:  The UTM (Universal Transverse Mercator) zone number associated with the map projection.

Vendor

• Field Definition:  The original ESA location to process the data.

     Values:

          EDRS = EDRS Exploitation Segment

          EPA_ = Madrid, Spain Processing Archive Centre

          MPC_ = Mission Performance Center/Coordinating Centre

          MPS_ = Mas Palomas, Spain Collaborative Ground Segment

          MTI_ = Matera, Italy Collaborative Ground Segment

          SGS_ = Svalbard, Norway Collaborative Ground Segment

          UPA_ = Farnborough, UK Processing Archive Centre

Vendor Product ID

• Field Definition:  The filename assigned by ESA to the Sentinel 2 product.

     Format:

          MMM_CCCC_FFFF_ DDDDDD_ssss_yyyymmddthhmmss_ROOO_VYYYYMMTDDHHMMSS_YYYYMMTDDHHMMSS

          MMM_DDDDDD_YYYYMMTDDHHMMSS_Nxxyy_ROOO_Txxxxx_ yyyymmddthhmmss (new format)

 

          MMM = Mission ID: S2A or S2B

          CCCC = File Class: Routine Operations - OPER

          FFFF = File Category: PRD - Product Category

          DDDDDD = Semantic Descriptor: MSIL1C = Multi-Spectral Instrument Level-1C

          ssss = Site Center

          yyyymmddthhmmss = Production Date or Generation Time for new format

         ROOO = Relative Orbit Number

          Nxxyy= Processing Baseline Number – identifies the current processing baseline where x and y may be a digit ranging from 0 to 9 (new format)

          VYYYYMMTDDHHMMSS_YYYYMMTDDHHMMSS = Validated Acquisition Period (Start Date and End Date) or Datatake Sensing Start Time for new format

     Values:

          ssss = Site Center

          MTI_ = Matera, Italy Collaborative Ground Segment

          SGS_ = Svalbard, Norway Collaborative Ground Segment

          MPS_ = Mas Palomas, Spain Collaborative Ground Segment

          EPA_ = Madrid, Spain Processing Archive Center

          MPC_ = Mission Performance Center/Coordinating Center

          UPA_ = Farnborough, UK Processing Archive Center

          EDRS = EDRS Exploitation Segment

     Example:

          S2A_OPER_PRD_MSIL1C_PDMC_20150818T101216_R065_V20150806T102902_20150806T102902

          S2A_MSIL1C_20161206T214902_N0204_R043_T01KHU_20161206T214901 (new format)

Vendor Software Version

• Field Definition:  The version of the processing software used to generate the Level-1C product.

Vendor Tile ID

• Field Definition:  The filename assigned by ESA to the Sentinel 2 granule/tile.

     Format:

          MMM_CCCC_MSI_L1C_TL_ssss_YYYYmmddThhmmss_Affffff_Txxxxx_Nxx.yy

          L1C_Txxxxx_ Affffff_YYYYmmddThhmmss (new format)

 

          MMM = Mission ID: S2A or S2B

          CCCC = File Class: Routine Operations - OPER

          MSI = Sensor (Multi-Spectral Instrument)

          L1C = Processing Level

          TL = Tile

          ssss = Site Center

          YYYYmmddhhmmss = Creation Date and Time or Sensing Time for new format

          Affffff = Absolute Orbit Number

          Txxxxx = Tile number according to the US-MGRS naming convention

          Nxx.yy = Processing Baseline Number – identifies the current processing baseline where x and y may be a digit ranging from 0 to 9

      Values:

          ssss = Site Center

          MTI_ = Matera, Italy Collaborative Ground Segment

          SGS_ = Svalbard, Norway Collaborative Ground Segment

          MPS_ = Mas Palomas, Spain Collaborative Ground Segment

          EPA_ = Madrid, Spain Processing Archive Centre

         MPC_ = Mission Performance Center/Coordinating Centre

         UPA_ = Farnborough, UK Processing Archive Centre

         EDRS = EDRS Exploitation Segment

     Example:

          S2A_OPER_MSI_L1C_TL_SGS_20150812T105504_A000718_T38QQ3_NO1.03

          L1C_T01KHU_A007619_20161206T214901 (new format)