Minimize Radiometric Resolution

The SENTINEL-3 SYN Level-1 product contains all 43 channels of OLCI and SLSTR Level-1B TOA radiance and brightness temperature measurements (21 OLCI channels and 22 SLSTR channels, including near nadir, oblique view and fire channels) in their acquisition geometry.

SYN L2 Channel SYN L1 Channel Instrument Channel ? centre (nm) Width (nm)
1 B1 Oa1 400 15
2 B2 Oa2 412.5 10
3 B3 Oa3 442.5 10
4 B4 Oa4 490 10
5 B5 Oa5 510 10
6 B6 Oa6 560 10
7 B7 Oa7 620 10
8 B8 Oa8 665 10
9 B9 Oa9 673.75 7.5
10 B10 Oa10 681.25 7.5
11 B11 Oa11 708.75 10
12 B12 Oa12 753.75 7.5
13 B13 Oa13 761.25 2.5
  B14 Oa14 764.375 3.75
  B15 Oa15 767.5 2.5
14 B16 Oa16 778.75 15
15 B17 Oa17 865 20
16 B18 Oa18 885 10
17 B19 Oa19 900 10
  B20 Oa20 940 20
18 B21 Oa21 1 020 40
19 B22 S1 550 20
20 B23 S2 665 20
21 B24 S3 865 20
22 B25 S4 1375 15
23 B26 S5 1610 60
24 B27 S6 2250 50
  B28 S7 3740 380
  B29 S8 10 850 90
  B30 S9 12 000 1 000
  B31 F1    
  B32 F2    
25 B33 S1oblique 550 20
26 B34 S2oblique 665 20
27 B35 S3oblique 865 20
28 B36 S4oblique 1375 15
29 B37 S5oblique 1610 60
30 B38 S6oblique 2250 50
  B39 S7oblique 3 740 380
  B40 S8oblique 10 850 90
  B41 S9oblique 12 000 1 000
  B41 S9oblique 12 000 1 000
  B42 F1oblique    
  B43 F2oblique    

Table 1: Input radiometric channels (green lines correspond to SYN L2 input channels)

The SYN Level-2 products are produced at OLCI full resolution, for the daylight part of the orbit over land, and only take as input TOA reflectance data for the six solar reflective SLSTR bands at both nadir and forward views (a total of 12 input channels), and the 18 OLCI bands at all non-absorbing channels (i.e. excluding OLCI oxygen bands 14, 15 and water vapour band 20). These channels are listed in the first column of the above table.

The VGT-P and VGT-S products include TOA and surface reflectances defined for VGT channels:

VGT channel Central Wavelength (nm) Bandwidth (nm) Combined SYN Level 2 channels
B0 450 20 SYN channel 2 and channel 3
B2 645 35 SYN channels 6 to 10
B3 835 55 SYN channels 14 to 18
MIR 1665 85 SYN channel 23 and channel 24

Table 2: Definition of VGT channels