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: 2023-12-07

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

Model vs. observations, sea ice class contingency tables

Date: :

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 2542 4345 429 872 57 29 0 0
OW 69 497 68 709 133 5 0 0
VODI 0 102 27 324 333 83 0 0
ODI 0 19 16 103 360 225 12 0
CDI 0 1 2 56 337 703 28 13
VCDI 0 0 0 0 349 2705 7286 23027
...date precedes bulletin

Date: :

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 1487 3983 399 710 28 24 2 0
OW 35 1153 154 1025 136 12 0 0
VODI 4 175 46 397 368 98 0 0
ODI 0 18 10 191 325 235 0 0
CDI 0 1 2 60 256 708 190 22
VCDI 0 0 0 4 325 2812 10868 19603
...date precedes bulletin

Date: :

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 1815 5116 475 920 37 0 0 16
OW 26 133 61 568 126 1 0 8
VODI 5 26 6 375 364 48 0 7
ODI 0 1 0 137 430 161 19 2
CDI 0 0 0 11 270 666 141 0
VCDI 0 0 0 1 100 1988 11542 20264
...date precedes bulletin

Date: :

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 2349 4262 294 600 42 0 0 13
OW 12 517 144 445 120 0 2 8
VODI 0 210 84 391 316 27 3 4
ODI 0 50 33 240 351 99 3 0
CDI 0 0 0 28 409 437 49 0
VCDI 0 0 0 2 148 2220 10545 21409
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 2352 4145 287 706 52 0 0 14
OW 9 626 138 294 100 0 1 6
VODI 0 194 73 345 305 22 3 5
ODI 0 74 57 292 325 88 4 0
CDI 0 0 0 65 407 395 54 0
VCDI 0 0 0 4 197 2278 10540 21409

Date: :

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 1275 3682 368 510 140 0 0 7
OW 43 645 89 683 509 4 1 13
VODI 91 407 61 412 433 129 4 3
ODI 12 64 4 116 270 273 3 2
CDI 0 0 0 20 185 665 25 1
VCDI 0 0 0 3 135 1759 7070 25750
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1291 3865 337 455 359 0 0 8
OW 33 434 103 583 290 19 0 11
VODI 69 357 72 501 327 113 3 4
ODI 28 142 10 153 297 228 4 2
CDI 0 0 0 52 250 600 37 0
VCDI 0 0 0 0 149 1870 7059 25751

Date: :

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 1001 3179 368 457 9 0 0 0
OW 57 249 130 603 67 0 0 0
VODI 3 60 43 653 429 4 0 0
ODI 0 2 0 101 1203 207 0 7
CDI 0 0 0 3 299 1304 96 10
VCDI 0 0 0 0 60 1519 6553 27190
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1033 2697 272 652 62 11 0 2
OW 28 430 99 459 352 44 0 7
VODI 0 263 108 457 798 253 0 13
ODI 0 80 50 173 426 291 12 7
CDI 0 20 12 68 301 598 152 4
VCDI 0 0 0 8 128 1837 6485 27174

Date: :

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 389 2419 224 725 127 0 0 0
OW 0 201 94 537 294 40 0 0
VODI 0 98 56 477 503 60 0 0
ODI 0 4 2 253 476 209 0 0
CDI 0 0 0 54 445 1065 45 2
VCDI 0 0 0 0 346 2984 6625 27112
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 389 2415 176 489 242 37 0 0
OW 0 202 110 565 261 59 0 2
VODI 0 82 75 544 590 409 0 17
ODI 0 23 15 297 420 567 2 5
CDI 0 0 0 122 279 521 89 4
VCDI 0 0 0 29 399 2765 6579 27086

Date: :

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 145 1914 344 562 320 0 0 0
OW 8 233 81 453 402 33 0 0
VODI 0 99 37 308 540 187 0 0
ODI 0 24 16 158 293 323 0 0
CDI 0 28 20 109 291 796 7 0
VCDI 0 0 9 80 458 3582 5592 28414
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 151 1764 259 425 326 18 0 0
OW 2 370 112 212 410 65 0 0
VODI 0 124 88 451 455 322 0 15
ODI 0 8 15 252 339 632 2 7
CDI 0 31 23 255 288 697 33 5
VCDI 0 1 10 75 486 3187 5564 28387


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