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: 2025-06-26

Model: GLO MFC - NEMO

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

Model vs. observations, sea ice class contingency tables

Date: 2025-06-20:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 255 3642 158 141 18 1 0 0
OW 0 391 88 144 47 6 0 0
VODI 0 599 173 421 408 103 10 0
ODI 0 395 165 600 1199 776 163 0
CDI 0 82 62 207 733 4481 2365 1
VCDI 0 2 5 9 37 998 9294 3903

Date: 2025-06-22:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 310 3994 205 170 21 2 0 0
OW 0 408 112 203 68 2 0 0
VODI 0 451 129 399 378 60 19 0
ODI 0 368 143 656 1268 873 166 0
CDI 0 58 50 165 1336 4658 1989 49
VCDI 0 0 0 3 57 1188 9348 2776

Date: 2025-06-24:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 327 4448 245 182 23 3 0 0
OW 0 359 113 247 89 5 0 0
VODI 0 249 114 418 345 78 19 0
ODI 0 282 128 541 1401 1006 194 0
CDI 0 34 35 114 1705 5050 2548 54
VCDI 0 0 0 2 298 1564 8577 1285

Date: 2025-06-26:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 805 4490 225 157 26 0 0 0
OW 0 340 140 277 84 4 0 0
VODI 0 202 103 330 239 97 10 0
ODI 0 258 110 640 1069 1210 179 0
CDI 0 50 39 165 980 6558 3588 44
VCDI 0 0 0 2 25 774 7987 875

Date: 2025-06-28:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1086 4689 220 216 34 3 0 0
OW 0 274 111 229 78 11 0 0
VODI 0 146 86 262 218 106 11 0
ODI 0 232 125 578 1273 1174 201 0
CDI 0 26 27 84 1532 7063 3860 0
VCDI 0 0 0 0 20 942 7165 0

Date: 2025-06-30:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1157 4779 239 247 38 5 0 0
OW 0 236 102 183 64 13 0 0
VODI 0 178 88 277 265 133 11 0
ODI 0 197 131 643 1608 1153 104 0
CDI 0 34 7 69 1454 7517 3242 129
VCDI 0 0 0 0 12 1028 6237 502

Date: 2025-07-02:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1126 4819 249 245 32 0 1 0
OW 0 200 84 187 84 16 0 0
VODI 0 227 111 307 321 193 5 0
ODI 0 219 147 583 1816 1116 38 0
CDI 0 15 5 102 2055 7829 2739 36
VCDI 0 0 0 0 3 916 6132 124

Date: 2025-07-04:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1241 4956 178 163 30 0 0 0
OW 0 195 85 210 120 14 0 0
VODI 0 221 110 389 532 198 4 0
ODI 0 281 115 652 2173 1169 51 0
CDI 0 13 15 106 1692 7813 3175 0
VCDI 0 0 0 0 1 505 5675 0


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