Radiometric Resolution

SENTINEL-3 SLSTR Radiometric Resolution

The nine Bands in VNIR/SWIR/TIR

The radiometric bands of SLSTR are presented in the table below:

Table 1: The radiometric bands of SLSTR. F1 and F2 (active Fire Bands) are based on the same detectors as S7 and S8 but with an increased dynamic range to prevent saturation over fires

Central Wavelength



Function Comments Resolution (metres)
S1 554.27 19.26 >Cloud screening, vegetation monitoring, aerosol VNIR Solar Reflectance Bands 500
S2 659.47 19.25 NDVI, vegetation monitoring, aerosol
S3 868.00 20.60

NDVI, cloud flagging,Pixel co-registration

S4 1374.80 20.80 Cirrus detection over land SWIR
S5 1613.40 60.68

loud clearing, ice, snow,vegetation monitoring

S6 2255.70 50.15 Vegetation state and cloud clearing
S7 3742.00 398.00 SST, LST, Active fire Thermal IR Ambient bands (200 K -320 K) 1000
S8 10854.00 776.00 SST, LST, Active fire
S9 12022.50 905.00 SST, LST
F1 3742.00 398.00 Active fire Thermal IR fire emission bands
F2 10854.00 776.00 Active fire



SLSTR Processing Baseline Timeline


SLSTR Processing Baseline Timeline

Figure 1: SLSTR Processing Baseline Timeline


SLSTR Level-1 and Level-2 Processing Baseline

Processing Baseline 2.29 (Level-1) and 2.33 (Level-2)



A new Bayesian and probabilistic cloud detection has been implemented over sea (Bayesian) and land (probabilistic). Cloud detection is based on calculating a probability of clear-sky of each pixel based on the satellite observation, prior information about the atmosphere and surface conditions and the respective uncertainties in these variables.


Processing Baseline 2.17 (Level-1) and 2.18 (Level-2)


Level-2 LST Products


Land Surface Temperature (LST)

Fixes to the implementation of the retrieval algorithm and associated auxiliary data have been made. These include,

i)     the across-track interpolation;

ii)    the correct assignment of biome and fractional vegetation cover;

iii)   Improvements to the noise estimation in the uncertainty budget.


Basic cloud screening

Significant improvements have been made in the basic cloud screening over land during daytimewith optimisation of the Visible Cloud Test.


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