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: 2025-11-20

Model: GLO MFC - NEMO

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

Model vs. observations, sea ice class contingency tables

Date: 2025-11-14:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1305 4150 109 95 2 0 0 0
OW 0 96 51 213 186 2 0 0
VODI 0 60 21 71 289 182 2 0
ODI 0 35 44 65 180 205 7 0
CDI 0 7 13 32 175 395 133 19
VCDI 0 1 1 5 67 2132 7341 14391

Date: 2025-11-16:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 2257 3189 84 67 1 0 0 0
OW 0 111 29 114 106 0 0 0
VODI 0 103 17 42 292 100 0 0
ODI 0 90 39 112 104 111 0 0
CDI 0 11 11 99 374 316 8 0
VCDI 0 0 1 9 272 4028 9352 10633

Date: 2025-11-18:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1426 3601 113 156 68 0 0 0
OW 7 132 16 57 134 8 0 0
VODI 3 108 21 32 166 77 0 0
ODI 0 94 39 88 124 249 36 0
CDI 0 10 9 71 385 549 67 0
VCDI 0 0 0 11 108 3667 10961 9489

Date: 2025-11-20:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 851 3694 112 127 24 3 0 0
OW 0 84 22 92 229 47 0 0
VODI 0 91 28 63 66 145 0 0
ODI 0 85 38 75 91 323 25 0
CDI 0 29 11 65 180 637 174 0
VCDI 0 0 0 0 13 2047 10171 12440

Date: 2025-11-22:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 583 3419 173 214 26 1 0 0
OW 0 84 18 73 182 18 0 0
VODI 0 58 40 79 129 233 0 0
ODI 0 61 29 170 198 264 22 0
CDI 0 15 4 13 139 758 201 2
VCDI 0 0 0 1 5 1130 11041 12699

Date: 2025-11-24:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 294 3250 199 291 29 0 0 0
OW 0 89 65 166 103 3 0 0
VODI 0 65 27 132 192 115 0 0
ODI 0 64 28 122 263 233 31 0
CDI 0 7 1 13 90 737 331 0
VCDI 0 4 0 1 10 834 12289 12004

Date: 2025-11-26:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 47 3111 194 341 72 0 0 0
OW 0 81 33 130 129 9 0 0
VODI 0 98 40 114 152 75 0 0
ODI 0 63 29 115 185 241 64 0
CDI 0 23 8 36 176 482 378 0
VCDI 0 3 1 5 50 1028 11151 13418

Date: 2025-11-28:

Best estimate
...observations not yet available


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