Validation of ice thickness
Bulletin date: 2026-04-16
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 2026-04-16 | 0.555 | | 0.080 | | 0.270 |
| Accept frequency |
| Week | =0m | 0 - 0.3m | 0.3 - 0.6m | 0.6-1m | >1m |
| Week before 2026-04-16, BE |
0.092 |
0.906 |
0.786 |
0.694 |
0.704 |
| CryoSat-2, Sentinel 3A/B |
| Week | Avg. obs. | FC bias | BE bias | FC RMS | BE RMS |
|
| Week before 2026-04-16 | 1.855 | | -0.100 | | 0.270 |
|
| Accept frequency |
| Week | =0m | 0 - 1m | 1 - 1.5m | 1.5-2m | 2 - 2.5m | >2.5m |
| Week before 2026-04-16, BE |
0.094 |
0.791 |
0.882 |
0.922 |
0.932 |
0.948 |
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 2026-04-16, BE |
| =0m |
0 |
58 |
41 |
12 |
9 |
| 0 - 0.3m |
0 |
2564 |
563 |
131 |
56 |
| 0.3 - 0.6m |
0 |
1085 |
1830 |
289 |
48 |
| 0.6 - 1m |
0 |
221 |
1597 |
2059 |
212 |
| >1m |
0 |
35 |
142 |
1007 |
1279 |
| CryoSat-2, Sentinel 3A/B |
Observed →
Modeled ↓ | =0m | 0 - 1m | 1 - 1.5m | 1.5-2m | 2 - 2.5m | >2.5m |
| Week before 2026-04-16, BE |
| =0m |
0 |
12 |
15 |
4 |
1 |
0 |
| 0 - 1m |
0 |
2315 |
1281 |
194 |
56 |
5 |
| 1 - 1.5m |
0 |
315 |
3895 |
1754 |
58 |
16 |
| 1.5 - 2m |
0 |
3 |
554 |
5969 |
1224 |
69 |
| 2 - 2.5m |
0 |
0 |
0 |
259 |
4487 |
739 |
| >2.5m |
0 |
0 |
0 |
2 |
500 |
3684 |
Sea ice thickness maps
Statistics | Contingency tables | Maps
Week before 2026-04-16, model vs. merged CS3SMOS data
Week before 2026-04-16, model vs. SMOS data
Week before 2026-04-16, model vs. altimetry data
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