22 February 2021 9 6K Report

According to the Sentinel-2 user guide here (https://sentinel.esa.int/web/sentinel/user-guides/sentinel-2-msi/naming-convention), the compact naming convention is arranged as follows:


The second date is the "" field, which is 15 characters in length, and is used to distinguish between different end user products from the same datatake.

For a single tile, there could be multiple product discriminators. Here I have these two different product discriminators for the same tile 51TYN:

  • S2A_MSIL2A_20190509T023551_N0212_R089_T51TYN_20190509T045217.SAFE
  • S2A_MSIL2A_20190509T023551_N0212_R089_T51TYN_20190515T163551.SAFE

I checked out the pixel values in ENVI and the corresponding pixel pairs have slightly different values.

To do a montly median composite using the timeseries images, the same location in different image in such a case should be only counted once. Since these two images are taken from the same tile, which one should I use if I want to do a montly composite?

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