Validation of sea ice concentration

Bulletin date: 2024-05-16

Model vs. observations, sea ice class contingency tables

Date: 2024-05-10:

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 58411 19321 1853 341 57 53 10 0
OW 0 2005 1983 569 296 137 79 0
VODI 0 132 1307 1262 758 500 346 0
ODI 0 40 270 735 830 1047 1300 3
CDI 0 99 157 508 914 1952 8805 27
VCDI 0 56 233 459 526 892 31051 19144
...date precedes bulletin

Date: 2024-05-14:

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 59010 20192 2462 411 87 9 4 0
OW 0 1370 2221 1319 273 58 71 0
VODI 0 168 658 1481 1193 559 399 0
ODI 0 76 175 667 983 873 1368 5
CDI 0 164 210 596 1345 4290 9629 20
VCDI 0 7 60 763 345 1365 27047 16535
...date precedes bulletin

Date: 2024-05-16:

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 59357 20474 2189 305 91 10 3 0
OW 0 1370 2143 1024 356 139 71 0
VODI 0 235 794 1545 904 525 472 1
ODI 0 84 236 661 771 796 1380 4
CDI 0 47 320 756 1203 3345 10196 30
VCDI 0 0 36 881 312 1019 27156 17227
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 59357 20426 2161 348 116 6 4 0
OW 0 1423 2122 946 356 160 62 0
VODI 0 237 858 1548 850 515 482 0
ODI 0 79 248 738 754 730 1385 5
CDI 0 45 289 712 1254 3480 10318 162
VCDI 0 0 40 880 307 943 27027 17095

Date: 2024-05-20:

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

Date: 2024-05-22:

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 62732 18179 2901 331 47 6 8 0
OW 150 915 2208 1109 287 92 47 0
VODI 60 7 692 1704 944 403 440 4
ODI 15 0 30 799 1066 1339 1473 12
CDI 11 0 5 505 972 4239 11986 54
VCDI 0 0 0 287 243 1273 22974 17919
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 62620 17835 2446 325 43 5 7 0
OW 238 1024 1713 639 241 144 60 0
VODI 42 237 1238 1398 600 329 473 6
ODI 38 5 369 1018 899 685 1268 13
CDI 30 0 68 954 1438 4685 11438 278
VCDI 0 0 2 401 338 1504 23682 17692

Date: 2024-05-24:

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 63113 17480 3765 205 42 2 7 0
OW 173 470 2553 1129 192 51 45 2
VODI 32 1 782 1683 721 288 451 10
ODI 16 0 161 769 1061 1229 1297 21
CDI 6 0 68 705 1293 4093 11454 503
VCDI 0 0 10 269 345 1206 22662 18103
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 63056 16943 3187 259 52 39 22 0
OW 185 787 1980 556 130 55 90 2
VODI 40 210 1529 1283 370 98 456 11
ODI 34 11 486 1097 758 552 1431 20
CDI 25 0 142 1103 1757 4698 10509 306
VCDI 0 0 15 462 587 1427 23408 18300


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