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

Validation of sea ice concentration - European sector

Reference date: 2025-10-16

Model: GLO MFC - NEMO

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

Model vs. observations, sea ice class contingency tables

Date: 2025-10-10:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 96594 4964 78 72 12 1 0 0
OW 0 80 24 63 38 2 0 0
VODI 0 60 62 78 55 19 1 0
ODI 0 0 10 126 136 63 11 0
CDI 0 0 0 8 160 1058 812 0
VCDI 0 0 0 0 9 1437 3052 0

Date: 2025-10-12:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 95873 4980 133 207 108 2 0 0
OW 0 37 29 69 82 10 0 0
VODI 0 28 13 109 106 32 2 0
ODI 0 0 1 45 228 95 19 0
CDI 0 0 0 0 69 268 169 0
VCDI 0 0 0 0 7 1260 4973 131

Date: 2025-10-14:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 96537 4214 177 221 46 0 0 0
OW 0 41 38 80 80 2 0 0
VODI 0 22 33 117 114 20 0 0
ODI 0 7 5 96 181 81 8 0
CDI 0 0 0 35 186 309 134 0
VCDI 0 0 0 0 11 1855 4133 302

Date: 2025-10-16:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 95131 4856 184 263 66 0 0 0
OW 0 50 29 157 277 58 0 0
VODI 0 24 20 89 159 56 0 0
ODI 0 0 1 51 171 116 10 0
CDI 0 0 0 12 187 509 156 0
VCDI 0 0 0 0 11 2901 3216 325

Date: 2025-10-18:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 94947 4556 154 227 27 0 0 0
OW 0 23 38 193 260 20 0 0
VODI 0 3 6 163 179 174 1 0
ODI 0 0 0 32 180 201 10 0
CDI 0 0 0 1 159 1272 130 0
VCDI 0 0 0 2 28 2938 3103 58

Date: 2025-10-20:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 95031 4216 142 155 19 0 0 0
OW 0 29 56 193 257 3 0 0
VODI 0 7 14 150 339 64 0 0
ODI 0 0 0 83 267 136 0 0
CDI 0 0 0 0 278 1666 158 0
VCDI 0 0 0 0 35 3357 2268 162

Date: 2025-10-22:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 93934 5133 136 197 16 0 0 0
OW 0 77 60 145 162 3 0 0
VODI 0 6 30 120 299 117 2 0
ODI 0 0 3 44 321 183 9 0
CDI 0 0 0 4 171 1302 410 0
VCDI 0 0 0 0 25 2796 3377 3

Date: 2025-10-24:

Best estimate
...observations not yet available


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