Validation of sea ice concentration

Bulletin date: 2025-07-10

Model vs. observations, sea ice class contingency tables

Date: 2025-07-04:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 79920 19887 14930 1076 179 73 219 0
OW 0 173 3450 2282 402 217 444 0
VODI 0 0 854 1508 778 566 1375 0
ODI 0 0 289 553 565 1049 3125 0
CDI 0 0 207 439 325 369 5139 0
VCDI 0 0 0 1 9 21 7560 10860
...date precedes bulletin

Date: 2025-07-08:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 79993 23344 13627 1035 191 59 243 0
OW 356 422 3030 1208 440 222 493 0
VODI 0 37 929 1332 822 739 1247 0
ODI 0 0 350 628 836 1096 2409 42
CDI 0 0 534 272 263 801 5739 362
VCDI 0 0 5 15 17 12 5456 10238
...date precedes bulletin

Date: 2025-07-10:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 79723 24169 14231 1190 195 67 230 0
OW 0 666 2753 1944 529 188 460 0
VODI 0 10 731 1859 1266 861 1276 0
ODI 0 0 273 439 428 1242 2706 24
CDI 0 0 74 186 143 257 7962 3762
VCDI 0 0 0 0 0 2 2565 6433
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 79723 24169 14231 1190 195 67 230 0
OW 0 666 2753 1944 529 188 460 0
VODI 0 10 731 1859 1266 861 1276 0
ODI 0 0 273 439 428 1242 2706 24
CDI 0 0 74 186 143 257 7962 3762
VCDI 0 0 0 0 0 2 2565 6433

Date: 2025-07-14:

Best estimate Forecast
...observations not yet available ...observations not yet available

Date: 2025-07-16:

Best estimate Forecast
...observations not yet available ...observations not yet available

Date: 2025-07-18:

Best estimate Forecast
...observations not yet available ...observations not yet available


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