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

Validation of sea ice concentration - European sector

Bulletin date: 2023-12-14

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

Model vs. observations, sea ice class contingency tables

Date: 2023-12-08:

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 78642 11056 452 774 316 220 172 0
OW 106 412 161 329 234 41 12 0
VODI 1 120 53 387 275 163 4 0
ODI 0 19 13 228 180 300 4 0
CDI 0 9 8 102 343 656 48 1
VCDI 0 7 13 58 283 1214 7054 4630
...date precedes bulletin

Date: 2023-12-10:

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 78646 10459 589 824 313 259 173 0
OW 83 383 140 444 186 44 10 0
VODI 0 205 119 416 288 96 8 0
ODI 0 13 29 200 317 127 7 0
CDI 0 17 6 155 377 568 53 6
VCDI 0 19 14 90 382 1522 6912 4601
...date precedes bulletin

Date: 2023-12-12:

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 77468 11652 638 1005 245 248 144 0
OW 51 141 119 564 142 35 10 0
VODI 0 37 68 436 378 77 21 0
ODI 0 11 5 164 378 126 18 0
CDI 0 6 6 96 478 410 33 0
VCDI 0 2 8 68 380 2125 6608 4699
...date precedes bulletin

Date: 2023-12-14:

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 77802 11212 530 731 296 210 110 0
OW 55 183 152 504 175 30 9 0
VODI 0 64 67 466 324 78 14 0
ODI 0 21 16 228 517 106 10 0
CDI 0 17 9 130 453 231 29 0
VCDI 0 21 16 81 510 2789 6401 4503
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 77802 11193 541 773 289 211 109 0
OW 55 196 135 467 170 23 9 0
VODI 0 70 70 479 368 70 15 0
ODI 0 20 17 201 496 94 8 0
CDI 0 17 11 133 437 219 35 0
VCDI 0 22 16 87 515 2827 6397 4503

Date: 2023-12-16:

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 75614 13170 711 661 279 193 180 0
OW 59 321 115 376 162 34 21 0
VODI 0 129 86 409 351 98 38 0
ODI 0 45 60 152 359 85 18 0
CDI 0 18 28 170 488 240 42 0
VCDI 0 23 18 145 614 3082 7232 3274
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 75615 13184 744 708 266 194 180 0
OW 58 289 78 409 161 26 32 0
VODI 0 137 90 334 393 101 32 0
ODI 0 46 56 149 358 74 26 0
CDI 0 25 27 163 473 215 32 0
VCDI 0 25 23 150 602 3122 7229 3274

Date: 2023-12-18:

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 78125 10626 428 615 262 313 221 0
OW 60 295 114 349 135 32 35 0
VODI 0 141 83 458 241 85 23 0
ODI 0 59 45 214 342 76 24 0
CDI 0 27 32 160 352 230 32 0
VCDI 0 31 30 197 721 3234 5679 4974
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 78126 10624 418 585 266 307 223 0
OW 59 272 139 401 126 36 34 0
VODI 0 141 78 455 267 92 22 0
ODI 0 61 34 211 348 99 24 0
CDI 0 36 30 152 333 237 24 0
VCDI 0 45 33 189 713 3199 5687 4974

Date: 2023-12-20:

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 77317 10729 474 704 275 354 115 0
OW 61 259 80 419 122 56 10 0
VODI 0 150 53 394 341 80 44 0
ODI 0 45 55 159 397 70 27 0
CDI 0 29 42 152 433 233 28 0
VCDI 0 11 28 257 756 3562 6333 4446
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 77317 10776 465 645 281 369 119 0
OW 61 251 97 460 98 37 7 0
VODI 0 120 66 428 397 81 43 0
ODI 0 42 44 181 385 70 23 0
CDI 0 26 25 134 426 240 29 0
VCDI 0 8 35 237 737 3558 6336 4446

Date: 2023-12-22:

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


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