Description of algorithm
Interpretation of results
Full domain
American sector
European sector
Asian sector
  Ice concntr, edge pos
  Contingency tables

Validation of sea ice concentration - Asian sector

Reference date: 2025-06-19

Model: GLO MFC - NEMO

Data source: OSI SAF N.H. sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2025-06-13:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 202 2611 136 213 14 0 0 0
OW 0 132 45 105 34 6 1 0
VODI 0 777 137 347 283 58 36 0
ODI 0 392 181 757 1418 807 198 0
CDI 0 44 37 139 862 3572 2335 0
VCDI 0 3 6 10 79 828 7768 7509

Date: 2025-06-15:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 212 2724 179 191 12 0 0 0
OW 0 154 62 134 23 4 0 0
VODI 0 750 147 494 263 76 29 0
ODI 0 351 174 749 1548 668 165 0
CDI 0 41 37 139 770 3390 2262 0
VCDI 0 1 2 6 30 1149 9835 5311

Date: 2025-06-17:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 221 2976 172 122 5 0 0 0
OW 0 229 89 151 29 1 0 0
VODI 0 648 170 539 260 93 5 0
ODI 0 384 185 719 1614 626 119 0
CDI 0 37 37 156 729 3310 2297 0
VCDI 0 0 1 9 32 1814 7969 6334

Date: 2025-06-19:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 246 3471 130 100 13 0 0 0
OW 0 362 105 114 35 7 0 0
VODI 0 669 193 464 335 111 5 0
ODI 0 395 176 638 1273 757 138 0
CDI 0 70 58 199 792 4158 2032 0
VCDI 0 2 5 12 62 1423 9594 3938

Date: 2025-06-21:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 302 3779 195 158 26 3 0 0
OW 0 380 102 158 57 8 0 0
VODI 0 574 134 415 370 65 16 0
ODI 0 391 134 615 1404 660 122 0
CDI 0 80 52 173 948 4924 2220 11
VCDI 0 0 1 4 27 616 10202 2756

Date: 2025-06-23:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 279 4282 225 160 27 3 0 0
OW 0 391 121 221 80 1 0 0
VODI 0 328 134 443 356 72 14 0
ODI 0 319 139 592 1449 871 139 0
CDI 0 38 35 127 1868 4312 2108 32
VCDI 0 0 0 1 153 1865 9800 1097

Date: 2025-06-25:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 344 4666 221 196 25 5 0 0
OW 0 326 119 279 88 11 0 0
VODI 0 238 85 347 335 80 14 0
ODI 0 264 117 611 1181 1237 207 0
CDI 0 48 34 131 1250 5920 3371 23
VCDI 0 0 0 0 53 1025 8214 1017

Date: 2025-06-27:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1023 4566 204 180 27 1 0 0
OW 0 328 140 259 84 8 1 0
VODI 0 160 105 268 195 96 13 0
ODI 0 261 111 620 1109 1112 185 0
CDI 0 33 39 117 1231 6720 3907 42
VCDI 0 0 0 0 19 943 7912 63


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