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: 2025-01-23

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

Model vs. observations, sea ice class contingency tables

Date: 2025-01-17:

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 64190 13229 336 352 15 9 0 0
OW 151 720 183 509 125 31 0 0
VODI 16 237 96 403 334 100 2 0
ODI 3 44 47 220 399 197 25 0
CDI 3 3 24 206 594 839 626 3
VCDI 7 0 0 28 228 1240 8309 6333
...date precedes bulletin

Date: 2025-01-19:

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 64677 12449 316 293 20 0 0 0
OW 283 694 154 467 175 2 0 0
VODI 20 337 97 363 350 40 0 0
ODI 2 90 75 228 347 129 0 3
CDI 3 8 49 297 567 853 372 9
VCDI 7 0 0 60 319 1402 9744 5115
...date precedes bulletin

Date: 2025-01-21:

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 63923 13299 383 448 5 0 0 0
OW 87 552 140 677 107 0 0 0
VODI 10 161 49 476 489 12 0 0
ODI 0 43 35 212 563 157 3 0
CDI 0 1 9 129 584 1457 415 3
VCDI 10 0 0 0 80 1245 9348 5304
...date precedes bulletin

Date: 2025-01-23:

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 63255 13448 315 287 36 0 0 0
OW 93 698 242 560 119 2 0 0
VODI 16 302 96 657 333 23 0 0
ODI 1 126 49 262 620 212 7 0
CDI 0 38 20 216 637 1404 589 0
VCDI 0 8 6 35 176 1039 8960 5529
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 63264 13520 324 309 35 0 0 0
OW 86 641 242 565 123 3 0 0
VODI 14 297 91 642 341 22 0 0
ODI 1 122 44 250 607 217 6 0
CDI 0 35 22 201 618 1406 644 0
VCDI 0 5 5 50 197 1032 8906 5529

Date: 2025-01-25:

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 61793 14427 352 229 41 1 0 0
OW 18 923 229 562 119 29 0 0
VODI 4 437 156 657 427 33 0 0
ODI 2 103 51 353 574 186 7 0
CDI 0 26 9 224 546 1260 757 0
VCDI 0 10 8 57 316 1248 7578 6664
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 61795 14480 360 272 39 1 0 0
OW 16 881 232 548 142 32 0 0
VODI 4 430 148 620 432 34 0 0
ODI 2 99 45 375 542 209 7 0
CDI 0 28 13 206 565 1227 791 1
VCDI 0 8 7 61 303 1254 7544 6663

Date: 2025-01-27:

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 61356 15221 323 239 34 21 0 0
OW 0 1287 372 633 108 23 0 0
VODI 0 154 89 969 424 44 0 0
ODI 0 16 8 253 685 148 1 0
CDI 0 2 0 85 641 1109 190 0
VCDI 0 5 0 14 195 1555 8001 6211
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 61356 14769 324 262 46 24 0 0
OW 0 1170 192 478 89 45 0 0
VODI 0 572 178 699 302 63 0 0
ODI 0 125 74 408 494 188 13 0
CDI 0 41 24 260 721 886 360 0
VCDI 0 8 0 86 435 1694 7819 6211

Date: 2025-01-29:

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 63408 13591 263 209 32 9 0 0
OW 14 1306 253 516 106 17 0 0
VODI 0 404 218 806 282 43 0 0
ODI 0 49 21 395 439 111 2 0
CDI 0 17 9 154 691 686 233 1
VCDI 0 7 9 69 442 1899 8624 5081
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 63399 12896 179 197 71 13 0 0
OW 17 1237 186 369 90 29 0 0
VODI 6 897 213 621 249 63 1 0
ODI 0 240 130 418 392 167 21 0
CDI 0 77 39 392 608 601 285 1
VCDI 0 27 26 152 582 1892 8552 5081

Date: 2025-01-31:

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 63034 13870 239 207 28 0 0 0
OW 15 1297 268 508 110 1 0 0
VODI 1 492 207 899 258 16 0 0
ODI 0 87 70 421 501 52 1 0
CDI 0 4 39 380 811 538 191 0
VCDI 0 4 2 113 677 2247 7253 5575
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 63029 13095 182 223 38 0 0 0
OW 3 1285 221 436 92 0 0 0
VODI 18 945 197 681 259 22 0 0
ODI 0 316 110 539 399 94 3 0
CDI 0 88 89 420 826 473 226 0
VCDI 0 25 26 229 771 2265 7216 5575


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