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Update SLSTR calibration coefficients #2056

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merged 1 commit into from Mar 16, 2022
Merged

Update SLSTR calibration coefficients #2056

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26 changes: 13 additions & 13 deletions satpy/readers/slstr_l1b.py
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Expand Up @@ -36,23 +36,23 @@
'S3B': 'Sentinel-3B'}

# These are the default channel adjustment factors.
# Defined in the product notice: S3.PN-SLSTR-L1.06
# https://www4-int.eumetsat.int/media/42788
CHANCALIB_FACTORS = {'S1_nadir': 1.0,
'S2_nadir': 1.0,
'S3_nadir': 1.0,
# Defined in the product notice: S3.PN-SLSTR-L1.08
# https://sentinel.esa.int/documents/247904/2731673/Sentinel-3A-and-3B-SLSTR-Product-Notice-Level-1B-SL-1-RBT-at-NRT-and-NTC.pdf
CHANCALIB_FACTORS = {'S1_nadir': 0.97,
'S2_nadir': 0.98,
'S3_nadir': 0.98,
'S4_nadir': 1.0,
'S5_nadir': 1.12,
'S6_nadir': 1.2,
'S5_nadir': 1.11,
'S6_nadir': 1.13,
'S7_nadir': 1.0,
'S8_nadir': 1.0,
'S9_nadir': 1.0,
'S1_oblique': 1.0,
'S2_oblique': 1.0,
'S3_oblique': 1.0,
'S1_oblique': 0.94,
'S2_oblique': 0.95,
'S3_oblique': 0.95,
'S4_oblique': 1.0,
'S5_oblique': 1.15,
'S6_oblique': 1.26,
'S5_oblique': 1.04,
'S6_oblique': 1.07,
'S7_oblique': 1.0,
'S8_oblique': 1.0,
'S9_oblique': 1.0, }
Expand Down Expand Up @@ -107,7 +107,7 @@ class NCSLSTR1B(BaseFileHandler):
By default, the calibration factors recommended by EUMETSAT are applied.
This is required as the SLSTR VIS channels are producing slightly incorrect
radiances that require adjustment.
Satpy uses the radiance corrections in S3.PN-SLSTR-L1.06, checked 26/10/2020.
Satpy uses the radiance corrections in S3.PN-SLSTR-L1.08, checked 11/03/2022.
User-supplied coefficients can be passed via the `user_calibration` kwarg
This should be a dict of channel names (such as `S1_nadir`, `S8_oblique`).

Expand Down