Validation of sea ice concentration

Bulletin date: 2024-10-24

Model vs. observations, sea ice class contingency tables

Date: 2024-10-18:

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 29678 19948 1979 208 115 2 2 0
OW 0 513 717 244 75 9 0 0
VODI 0 119 370 383 128 63 50 0
ODI 0 40 156 326 140 154 154 0
CDI 0 20 364 551 474 347 1057 0
VCDI 0 0 60 212 421 939 13333 7266
...date precedes bulletin

Date: 2024-10-22:

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 99773 24540 2029 624 20 6 2 0
OW 0 817 916 801 140 22 6 0
VODI 0 143 626 889 372 133 34 0
ODI 0 38 148 588 402 191 98 0
CDI 0 8 119 426 486 611 3379 160
VCDI 0 0 0 290 470 1618 11192 6351
...date precedes bulletin

Date: 2024-10-24:

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 89760 23667 3165 802 327 13 2 0
OW 0 189 747 929 419 169 0 0
VODI 0 23 157 778 465 436 1 0
ODI 0 3 168 746 281 337 35 0
CDI 0 0 201 885 365 730 914 2
VCDI 0 0 7 580 361 1376 11150 10143
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 89760 23565 3127 884 325 10 2 0
OW 0 293 766 836 446 220 0 0
VODI 0 22 238 857 440 393 6 0
ODI 0 2 113 620 276 323 30 0
CDI 0 0 178 874 372 781 1089 2
VCDI 0 0 23 649 359 1334 10975 10143

Date: 2024-10-28:

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 96882 23001 3736 808 111 82 2 0
OW 0 199 955 542 327 431 36 0
VODI 0 28 359 614 330 427 165 0
ODI 0 16 224 375 403 367 191 0
CDI 0 9 227 472 497 927 2211 43
VCDI 0 0 242 372 423 1204 13310 7920
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 96882 22851 3655 878 202 326 7 0
OW 0 290 944 531 278 338 68 0
VODI 0 77 471 598 327 382 173 0
ODI 0 26 286 354 420 337 243 0
CDI 0 9 281 458 460 859 1773 0
VCDI 0 0 106 364 404 1196 13651 7963

Date: 2024-10-30:

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 95855 24165 3158 604 30 15 1 0
OW 0 204 978 912 136 71 0 0
VODI 0 28 238 904 448 569 149 0
ODI 0 0 42 446 415 855 466 0
CDI 0 0 22 334 582 1296 3867 410
VCDI 0 0 10 112 548 1599 12067 6932
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 95855 23730 3142 911 206 471 20 0
OW 0 531 684 603 170 280 46 0
VODI 0 136 395 593 234 596 210 0
ODI 0 0 205 592 331 584 366 0
CDI 0 0 22 560 753 801 2225 0
VCDI 0 0 0 53 465 1673 13683 7342

Date: 2024-11-01:

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


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