Validation of ice thickness
Bulletin date: 2025-10-30
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 2025-10-30 | 0.279 | | -0.070 | | 0.210 |
| Week after 2025-10-30 | 0.331 | -0.120 | -0.130 | 0.210 | 0.200 |
| Accept frequency |
| Week | =0m | 0 - 0.3m | 0.3 - 0.6m | 0.6-1m | >1m |
| Week before 2025-10-30, BE |
0.268 |
0.876 |
0.773 |
0.142 |
0.367 |
| Week after 2025-10-30, FC |
0.241 |
0.68 |
0.708 |
0.295 |
1 |
| Week after 2025-10-30, BE |
0.269 |
0.684 |
0.715 |
0.266 |
1 |
| CryoSat-2, Sentinel 3A/B |
| Week | Avg. obs. | FC bias | BE bias | FC RMS | BE RMS |
|
| Week before 2025-10-30 | 1.270 | | -0.130 | | 0.390 |
|
| Week after 2025-10-30 | 1.316 | -0.190 | -0.170 | 0.310 | 0.260 |
|
| Accept frequency |
| Week | =0m | 0 - 1m | 1 - 1.5m | 1.5-2m | 2 - 2.5m | >2.5m |
| Week before 2025-10-30, BE |
0.086 |
0.748 |
0.574 |
0.603 |
0.463 |
0.008 |
| Week after 2025-10-30, FC |
0.014 |
0.79 |
0.628 |
0.701 |
0.77 |
0 |
| Week after 2025-10-30, BE |
0.019 |
0.841 |
0.712 |
0.78 |
0.838 |
0 |
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 2025-10-30, BE |
| =0m |
0 |
491 |
91 |
4 |
0 |
| 0 - 0.3m |
0 |
3797 |
975 |
42 |
3 |
| 0.3 - 0.6m |
0 |
524 |
1060 |
166 |
0 |
| 0.6 - 1m |
0 |
206 |
148 |
10 |
1 |
| >1m |
0 |
10 |
3 |
13 |
4 |
| Week after 2025-10-30, FC |
| =0m |
0 |
440 |
69 |
6 |
0 |
| 0 - 0.3m |
0 |
2520 |
1917 |
108 |
6 |
| 0.3 - 0.6m |
0 |
275 |
945 |
384 |
1 |
| 0.6 - 1m |
0 |
36 |
90 |
21 |
2 |
| >1m |
0 |
0 |
0 |
1 |
7 |
| Week after 2025-10-30, 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 |
| CryoSat-2, Sentinel 3A/B |
Observed →
Modeled ↓ | =0m | 0 - 1m | 1 - 1.5m | 1.5-2m | 2 - 2.5m | >2.5m |
| Week before 2025-10-30, BE |
| =0m |
0 |
67 |
3 |
0 |
0 |
0 |
| 0 - 1m |
0 |
5864 |
2763 |
78 |
14 |
0 |
| 1 - 1.5m |
0 |
365 |
2151 |
1971 |
147 |
0 |
| 1.5 - 2m |
0 |
69 |
393 |
1478 |
972 |
126 |
| 2 - 2.5m |
0 |
13 |
580 |
504 |
584 |
24 |
| >2.5m |
0 |
0 |
94 |
30 |
1 |
0 |
| Week after 2025-10-30, FC |
| =0m |
0 |
66 |
5 |
0 |
0 |
0 |
| 0 - 1m |
0 |
6349 |
2590 |
38 |
4 |
0 |
| 1 - 1.5m |
0 |
132 |
2815 |
2282 |
159 |
0 |
| 1.5 - 2m |
0 |
1 |
426 |
2054 |
1342 |
31 |
| 2 - 2.5m |
0 |
0 |
116 |
181 |
691 |
335 |
| >2.5m |
0 |
0 |
6 |
8 |
0 |
0 |
| Week after 2025-10-30, 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 |
Sea ice thickness maps
Statistics | Contingency tables | Maps
Week before 2025-10-30, model vs. merged CS3SMOS data
Week after 2025-10-30, model vs. merged CS3SMOS data
Week before 2025-10-30, model vs. SMOS data
Week after 2025-10-30, model vs. SMOS data
Week before 2025-10-30, model vs. altimetry data
Week after 2025-10-30, model vs. altimetry data
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