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: 2025-06-10

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

Model vs. observations, sea ice class contingency tables

Date: 2025-06-10:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 27159 13309 77 389 84 7 2 0
OW 91 1038 43 384 106 18 12 0
VODI 67 2009 124 1406 878 369 266 15
ODI 0 1274 162 2941 3254 2241 1575 315
CDI 0 329 42 1628 4025 5989 7145 3631
VCDI 0 45 2 297 2049 6719 19297 23732

Date: 2025-06-12:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 26314 18233 175 1465 382 46 34 0
OW 3 513 34 406 211 77 31 0
VODI 0 752 66 1078 820 490 290 14
ODI 0 817 120 2154 2441 2333 1764 237
CDI 0 256 41 1480 3128 6683 6847 3270
VCDI 0 61 5 445 2011 10681 17255 21082

Date: 2025-06-14:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 26314 19669 176 1911 736 163 74 0
OW 0 327 22 284 191 97 62 0
VODI 0 575 45 777 699 556 306 8
ODI 0 835 103 1902 2243 2215 1745 171
CDI 0 380 52 1627 3706 6636 6960 2574
VCDI 0 166 9 603 3881 11056 18440 16249

Date: 2025-06-16:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 28760 18158 189 1899 777 274 114 2
OW 0 328 20 253 220 168 38 0
VODI 0 601 39 703 673 674 315 10
ODI 0 801 124 1605 2015 2274 1872 259
CDI 0 597 71 1694 3668 6446 6819 3325
VCDI 0 275 18 633 4108 11401 14915 17410


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