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

Validation of sea ice concentration - European sector

Bulletin date: 2025-05-06

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

Model vs. observations, sea ice class contingency tables

Date: 2025-05-06:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 17791 13381 78 488 36 2 0 0
OW 8 300 15 223 50 5 0 0
VODI 9 464 42 559 374 87 10 0
ODI 17 235 38 712 1053 616 120 14
CDI 10 49 10 506 1399 1955 810 324
VCDI 6 21 5 187 1171 3759 4903 4826

Date: 2025-05-08:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 17702 14317 142 1045 161 18 0 0
OW 10 89 7 233 133 18 0 0
VODI 9 150 20 419 561 166 12 0
ODI 5 65 18 516 1159 680 188 5
CDI 2 23 8 342 1397 1800 946 150
VCDI 1 10 4 173 1199 3787 6870 2108

Date: 2025-05-10:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 19010 13490 140 1035 323 34 0 0
OW 3 116 15 175 187 30 0 0
VODI 5 139 19 428 691 232 8 0
ODI 0 82 44 518 1200 752 172 3
CDI 0 61 9 348 1403 1716 1095 123
VCDI 1 29 6 249 1226 3073 6367 2111

Date: 2025-05-12:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 19718 12951 92 1253 391 41 0 0
OW 1 85 7 231 199 39 0 0
VODI 0 152 9 566 746 191 10 0
ODI 0 121 16 663 1221 635 246 3
CDI 0 56 8 411 1572 1579 1369 70
VCDI 0 15 4 262 1502 2601 6037 1595


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