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

Validation of sea ice concentration - Full domain

Bulletin date: 2025-07-08

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

Model vs. observations, sea ice class contingency tables

Date: 2025-07-08:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 39317 18879 44 294 81 15 1 0
OW 154 1633 22 273 135 31 3 0
VODI 92 2536 66 820 791 344 72 0
ODI 5 2369 126 1697 2704 2380 465 0
CDI 1 1110 71 1433 5960 11958 2868 0
VCDI 0 148 16 408 6500 23075 5536 0

Date: 2025-07-10:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 43002 20798 117 1386 566 80 4 0
OW 85 449 17 269 253 68 4 0
VODI 90 761 33 568 868 358 71 0
ODI 38 1162 74 1217 2579 2210 222 0
CDI 5 689 60 1110 7719 11446 1765 0
VCDI 0 196 15 365 10115 19790 3809 0

Date: 2025-07-12:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 43934 21255 187 1892 943 115 14 0
OW 9 297 17 241 277 54 17 0
VODI 3 574 31 555 792 376 91 0
ODI 1 939 62 1090 2036 2559 327 0
CDI 1 702 60 1077 4807 14363 1830 0
VCDI 0 241 11 438 4933 23402 3880 0

Date: 2025-07-14:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 45305 20879 171 2095 1306 218 16 0
OW 0 273 8 218 219 76 22 0
VODI 0 537 30 478 693 382 81 0
ODI 0 933 48 1019 2156 2549 171 0
CDI 0 755 52 1154 5193 13903 1002 0
VCDI 0 292 22 539 6827 22070 2741 0


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