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

Validation of sea ice concentration - American sector

Bulletin date: 2023-11-02

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2023-10-27:

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 27741 5776 212 295 7 0 0 0
OW 0 409 190 642 265 1 0 0
VODI 0 94 71 475 578 128 0 0
ODI 0 8 11 165 489 409 0 0
CDI 0 0 0 49 428 1015 49 0
VCDI 0 0 0 0 155 4348 7480 9741
...date precedes bulletin

Date: 2023-10-29:

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 27462 5030 203 396 29 0 0 0
OW 24 399 193 724 217 4 0 0
VODI 1 56 61 561 623 101 0 0
ODI 0 0 0 192 588 335 0 0
CDI 0 0 0 26 492 1175 13 0
VCDI 0 0 0 0 132 4027 7253 10914
...date precedes bulletin

Date: 2023-10-31:

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 25633 5141 316 697 116 0 0 0
OW 0 229 170 639 300 0 0 0
VODI 0 6 10 539 664 41 0 0
ODI 0 0 0 119 761 297 0 0
CDI 0 0 0 10 883 1029 40 0
VCDI 0 0 0 0 71 2596 8012 12912
...date precedes bulletin

Date: 2023-11-02:

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 25465 4414 286 599 63 0 0 0
OW 0 378 167 531 521 30 0 0
VODI 0 50 25 403 693 167 0 0
ODI 0 4 2 155 563 328 10 0
CDI 0 0 0 55 516 690 101 0
VCDI 0 0 0 13 337 1904 6022 16739
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 25461 4430 324 623 187 1 0 0
OW 1 350 123 520 400 28 0 0
VODI 3 59 28 391 739 151 0 0
ODI 0 7 5 148 548 323 1 0
CDI 0 0 0 67 474 696 142 0
VCDI 0 0 0 7 345 1920 5990 16739

Date: 2023-11-04:

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 24906 3878 320 666 46 0 0 0
OW 1 439 121 510 360 43 0 0
VODI 0 118 68 485 550 343 0 0
ODI 0 2 10 150 579 510 7 0
CDI 0 0 0 56 504 670 31 0
VCDI 0 0 0 41 424 2196 7488 15709
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 24903 3923 353 781 95 9 0 0
OW 1 340 84 421 323 82 0 0
VODI 3 173 74 446 572 337 0 0
ODI 0 1 8 159 603 491 0 0
CDI 0 0 0 64 424 675 18 0
VCDI 0 0 0 37 446 2168 7508 15709

Date: 2023-11-06:

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 24613 3418 306 299 14 0 0 0
OW 3 334 219 706 57 0 0 0
VODI 3 23 36 927 376 23 0 0
ODI 0 3 2 193 1045 199 0 0
CDI 0 0 0 37 381 1456 0 0
VCDI 0 0 0 37 153 2916 7767 15685
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 24603 3275 347 681 94 0 0 0
OW 13 307 127 522 290 25 0 0
VODI 3 181 78 638 604 111 0 0
ODI 0 15 11 224 508 448 0 0
CDI 0 0 0 73 340 891 14 0
VCDI 0 0 0 61 190 3119 7753 15685

Date: 2023-11-08:

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 24219 2920 328 517 40 0 0 0
OW 18 289 113 714 174 1 0 0
VODI 3 77 22 607 500 10 0 0
ODI 0 33 10 192 760 173 4 0
CDI 0 2 1 47 377 884 22 0
VCDI 0 0 0 21 267 2783 6119 18984
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 24203 2689 293 740 78 0 0 0
OW 34 346 89 551 398 6 0 0
VODI 3 177 42 393 581 155 6 0
ODI 0 87 46 301 492 338 24 0
CDI 0 21 4 67 305 747 33 0
VCDI 0 1 0 46 264 2605 6082 18984

Date: 2023-11-10:

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 23797 2636 209 285 0 0 0 0
OW 71 368 146 799 50 1 0 0
VODI 4 82 83 678 432 25 0 0
ODI 0 40 16 330 569 144 0 0
CDI 0 18 8 84 502 528 10 0
VCDI 0 0 0 34 380 3114 5696 20092
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 23826 2394 211 561 17 5 0 0
OW 31 465 103 589 146 8 0 0
VODI 15 170 68 521 618 49 0 0
ODI 0 83 73 321 571 185 10 0
CDI 0 32 7 180 374 592 73 0
VCDI 0 0 0 38 207 2973 5623 20092


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