I’m using SNAP 7.0 with s3tbx version 7.0.2.
Working with Sentinel 3 OL_2_WFR products directly.
Specifically, for example: S3B_OL_2_WFR____20190429T075536_20190429T075836_20190430T161521_0179_024_363_2340_MAR_O_NT_002.SEN3
I noticed that there are negative reflectance values in a lot of water pixels, in almost all the bands.
Example of spectrum view of several pixels:
Why they are negative BOA values?
I’m using the reflectance values to calculate stuffs, the values must be appropriate (positive like BOA reflectance should be).
Is adding a scale factor to those pixels is correct to do? (for instance, add the min negative value to all bands?)
Need help to understand if the negative values are incorrect (like I’m supposed) and how to fix them…
(I see in multiple posts in 2017 that @marpet answer back in those days that L2 is not official and need to work with C2RCC, but today (2019) L2 are available and might be atmospherically corrected without issues.)
Hope someone will answer and find me a solution quickly