Validation of ice thickness
Bulletin date: 2025-11-06
Model: ARC MFC - TOPAZ
Data source: CMEMS CS3SMOS
Validation statistics summary
Statistics | Contingency tables | Maps
| SMOS |
| Week | Avg. obs. | FC bias | BE bias | FC RMS | BE RMS |
| Week before 2025-11-06 | 0.331 | | -0.130 | | 0.200 |
| Week after 2025-11-06 | 0.374 | -0.150 | -0.160 | 0.210 | 0.210 |
| Accept frequency |
| Week | =0m | 0 - 0.3m | 0.3 - 0.6m | 0.6-1m | >1m |
| Week before 2025-11-06, BE |
0.269 |
0.684 |
0.715 |
0.266 |
1 |
| Week after 2025-11-06, FC |
0.206 |
0.64 |
0.677 |
0.944 |
1 |
| Week after 2025-11-06, BE |
0.26 |
0.656 |
0.664 |
0.987 |
1 |
| CryoSat-2, Sentinel 3A/B |
| Week | Avg. obs. | FC bias | BE bias | FC RMS | BE RMS |
|
| Week before 2025-11-06 | 1.316 | | -0.170 | | 0.260 |
|
| Week after 2025-11-06 | 1.327 | -0.180 | -0.150 | 0.250 | 0.220 |
|
| Accept frequency |
| Week | =0m | 0 - 1m | 1 - 1.5m | 1.5-2m | 2 - 2.5m | >2.5m |
| Week before 2025-11-06, BE |
0.019 |
0.841 |
0.712 |
0.78 |
0.838 |
0 |
| Week after 2025-11-06, FC |
0.011 |
0.854 |
0.8 |
0.838 |
0.798 |
0.829 |
| Week after 2025-11-06, BE |
0.012 |
0.877 |
0.853 |
0.888 |
0.846 |
0.982 |
Sea ice thickness contingency tables
Statistics | Contingency tables | Maps
| SMOS |
Observed →
Modeled ↓ | =0m | 0 - 0.3m | 0.3 - 0.6m | 0.6-1m | >1m |
| Week before 2025-11-06, BE |
| =0m |
0 |
394 |
64 |
6 |
0 |
| 0 - 0.3m |
0 |
2637 |
2005 |
94 |
5 |
| 0.3 - 0.6m |
0 |
217 |
904 |
398 |
3 |
| 0.6 - 1m |
0 |
23 |
48 |
21 |
2 |
| >1m |
0 |
0 |
0 |
1 |
6 |
| Week after 2025-11-06, FC |
| =0m |
0 |
709 |
54 |
10 |
0 |
| 0 - 0.3m |
0 |
2311 |
1504 |
186 |
6 |
| 0.3 - 0.6m |
0 |
185 |
1226 |
897 |
3 |
| 0.6 - 1m |
0 |
2 |
18 |
99 |
6 |
| >1m |
0 |
0 |
0 |
4 |
1 |
| Week after 2025-11-06, BE |
| =0m |
0 |
490 |
34 |
10 |
0 |
| 0 - 0.3m |
0 |
2583 |
1599 |
181 |
6 |
| 0.3 - 0.6m |
0 |
134 |
1166 |
932 |
3 |
| 0.6 - 1m |
0 |
0 |
3 |
69 |
6 |
| >1m |
0 |
0 |
0 |
4 |
1 |
| CryoSat-2, Sentinel 3A/B |
Observed →
Modeled ↓ | =0m | 0 - 1m | 1 - 1.5m | 1.5-2m | 2 - 2.5m | >2.5m |
| Week before 2025-11-06, BE |
| =0m |
0 |
48 |
5 |
0 |
0 |
0 |
| 0 - 1m |
0 |
6423 |
2050 |
38 |
5 |
0 |
| 1 - 1.5m |
0 |
76 |
3463 |
1998 |
94 |
0 |
| 1.5 - 2m |
0 |
1 |
376 |
2392 |
1112 |
0 |
| 2 - 2.5m |
0 |
0 |
64 |
134 |
985 |
366 |
| >2.5m |
0 |
0 |
0 |
1 |
0 |
0 |
| Week after 2025-11-06, FC |
| =0m |
0 |
176 |
11 |
1 |
0 |
0 |
| 0 - 1m |
0 |
7128 |
2003 |
48 |
3 |
0 |
| 1 - 1.5m |
0 |
38 |
3841 |
1737 |
13 |
0 |
| 1.5 - 2m |
0 |
0 |
287 |
3193 |
1236 |
1 |
| 2 - 2.5m |
0 |
0 |
24 |
114 |
1119 |
595 |
| >2.5m |
0 |
0 |
2 |
4 |
1 |
28 |
| Week after 2025-11-06, BE |
| =0m |
0 |
74 |
9 |
1 |
0 |
0 |
| 0 - 1m |
0 |
7227 |
1782 |
52 |
4 |
0 |
| 1 - 1.5m |
0 |
41 |
4091 |
1421 |
6 |
0 |
| 1.5 - 2m |
0 |
0 |
275 |
3548 |
1026 |
0 |
| 2 - 2.5m |
0 |
0 |
11 |
74 |
1336 |
570 |
| >2.5m |
0 |
0 |
0 |
1 |
0 |
54 |
Sea ice thickness maps
Statistics | Contingency tables | Maps
Week before 2025-11-06, model vs. merged CS3SMOS data
Week after 2025-11-06, model vs. merged CS3SMOS data
Week before 2025-11-06, model vs. SMOS data
Week after 2025-11-06, model vs. SMOS data
Week before 2025-11-06, model vs. altimetry data
Week after 2025-11-06, model vs. altimetry data
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