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

Validation of sea ice concentration - Full domain

Bulletin date: 2021-12-16

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

Model vs. observations, sea ice class contingency tables

Date: 2021-12-10:

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 80214 15872 192 811 457 157 61 0
OW 55 835 73 592 455 12 0 0
VODI 0 363 47 542 535 65 0 0
ODI 0 88 19 344 698 161 0 0
CDI 0 43 8 223 903 556 65 0
VCDI 0 20 8 117 1277 6404 21089 53687
...date precedes bulletin

Date: 2021-12-12:

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 79531 15714 192 793 361 131 9 0
OW 60 777 83 620 508 197 0 0
VODI 0 350 53 533 606 298 0 0
ODI 0 124 21 312 482 352 0 0
CDI 0 46 6 196 723 803 94 3
VCDI 0 23 7 124 1153 5387 19274 57102
...date precedes bulletin

Date: 2021-12-14:

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 79003 15892 170 644 363 125 17 0
OW 60 725 125 615 252 52 0 0
VODI 0 182 40 720 702 123 0 0
ODI 0 76 17 256 752 414 86 0
CDI 0 7 2 100 710 1063 591 19
VCDI 0 1 2 63 1097 5209 20237 56536
...date precedes bulletin

Date: 2021-12-16:

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 78877 15406 202 664 293 113 12 0
OW 64 852 85 628 217 27 1 0
VODI 0 315 44 698 579 69 2 0
ODI 0 122 13 317 910 137 15 0
CDI 0 52 15 122 906 742 141 11
VCDI 0 7 6 81 819 6415 20224 56845
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 78878 15413 209 747 321 116 12 0
OW 63 820 71 580 241 22 0 0
VODI 0 340 48 635 589 78 3 0
ODI 0 122 16 345 838 140 16 0
CDI 0 52 15 124 838 714 188 7
VCDI 0 7 6 79 897 6433 20176 56849

Date: 2021-12-18:

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 78842 14312 147 628 538 150 0 0
OW 64 809 73 567 440 98 0 0
VODI 0 325 62 557 669 202 0 0
ODI 0 113 29 318 710 292 4 0
CDI 0 81 11 131 737 872 86 16
VCDI 0 15 15 119 961 6675 17665 59715
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 78842 14456 154 685 567 183 0 0
OW 64 665 61 586 446 70 0 0
VODI 0 324 55 448 708 209 0 0
ODI 0 121 39 297 629 287 2 0
CDI 0 77 13 170 684 855 89 21
VCDI 0 12 15 134 1021 6685 17664 59710

Date: 2021-12-20:

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 76413 14558 156 775 424 142 10 0
OW 69 741 94 667 348 52 13 0
VODI 0 210 51 569 799 228 0 0
ODI 0 70 7 211 1078 568 0 0
CDI 0 57 7 45 861 2021 49 7
VCDI 0 27 14 79 651 6727 20062 58188
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 76413 14321 176 1004 740 280 23 0
OW 69 733 73 532 553 355 0 0
VODI 0 377 32 372 702 530 0 0
ODI 0 114 20 201 569 492 13 0
CDI 0 87 7 106 626 1368 216 9
VCDI 0 31 21 131 971 6713 19882 58186

Date: 2021-12-22:

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 75815 13949 138 549 319 368 16 0
OW 63 787 90 489 309 368 21 0
VODI 0 287 41 537 487 456 18 0
ODI 0 101 11 197 556 681 75 0
CDI 0 43 18 126 657 1216 249 27
VCDI 0 57 2 128 722 6811 27290 52974
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 75800 13544 152 646 505 683 54 0
OW 78 901 65 440 339 526 83 0
VODI 0 528 38 393 472 778 131 0
ODI 0 137 20 214 393 520 234 0
CDI 0 73 13 133 534 778 298 80
VCDI 0 41 12 200 807 6615 26869 52921

Date: 2021-12-24:

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 75416 13715 135 542 277 168 128 0
OW 74 743 96 385 232 305 97 0
VODI 0 409 62 533 405 427 50 0
ODI 0 119 16 318 499 500 131 0
CDI 0 62 4 165 643 850 394 3
VCDI 0 97 16 167 947 6884 23467 57567
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 75355 13441 161 685 383 423 224 0
OW 112 682 55 284 306 434 138 0
VODI 23 671 70 488 443 600 281 0
ODI 0 180 22 297 466 470 268 6
CDI 0 67 5 170 567 875 430 112
VCDI 0 104 16 186 838 6332 22926 57452


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