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: 2024-03-14

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

Model vs. observations, sea ice class contingency tables

Date: 2024-03-08:

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 63857 16760 224 172 15 0 0 0
OW 0 1319 494 748 132 0 0 0
VODI 0 340 227 1221 558 39 0 0
ODI 0 94 84 646 1155 299 9 0
CDI 0 63 47 371 1638 3180 1414 10
VCDI 0 0 5 80 519 4911 20745 73367
...date precedes bulletin

Date: 2024-03-10:

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 63072 16633 145 197 42 0 0 0
OW 0 1276 516 848 141 13 0 0
VODI 0 376 236 1293 639 74 5 0
ODI 0 124 74 677 1172 412 40 0
CDI 0 49 51 363 1384 3578 1483 17
VCDI 0 0 0 46 317 4427 20839 74184
...date precedes bulletin

Date: 2024-03-12:

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 62560 16918 266 190 22 0 0 0
OW 105 1327 592 766 76 1 0 0
VODI 0 103 141 1685 529 24 0 0
ODI 0 6 22 422 1660 225 6 0
CDI 0 0 1 149 1394 3463 462 34
VCDI 0 0 0 10 392 5071 24862 71259
...date precedes bulletin

Date: 2024-03-14:

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 61720 16960 314 320 9 0 0 0
OW 65 1435 422 903 104 3 0 0
VODI 0 182 244 1350 633 32 0 0
ODI 0 16 21 411 1436 305 15 0
CDI 0 4 5 186 1297 3015 1121 43
VCDI 0 0 4 54 579 5449 25967 70119
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 61742 17032 336 341 15 0 0 0
OW 43 1357 414 905 99 3 0 0
VODI 0 186 225 1315 630 40 0 0
ODI 0 15 25 440 1454 324 17 0
CDI 0 6 6 175 1298 3004 1047 43
VCDI 0 1 4 48 562 5433 26039 70119

Date: 2024-03-16:

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 61236 16707 370 449 36 0 0 0
OW 30 1617 399 711 202 1 0 0
VODI 0 309 325 1180 562 76 0 0
ODI 0 40 59 580 1285 259 2 0
CDI 0 20 36 288 1381 3117 783 158
VCDI 0 2 3 183 866 5301 23504 72666
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 61242 16803 408 490 33 0 0 0
OW 24 1524 384 695 224 1 0 0
VODI 0 313 310 1142 570 77 0 0
ODI 0 30 59 604 1245 310 13 0
CDI 0 25 27 278 1396 3066 874 150
VCDI 0 0 4 182 864 5300 23402 72674

Date: 2024-03-18:

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 60875 17127 363 546 31 0 0 0
OW 46 1265 583 801 208 0 0 0
VODI 0 29 131 1607 618 25 0 0
ODI 0 1 9 398 1475 308 0 0
CDI 0 0 9 153 1195 3609 368 7
VCDI 0 0 0 86 897 4717 26939 70317
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 60893 16470 375 655 51 0 0 0
OW 28 1522 316 622 313 9 0 0
VODI 0 396 286 1162 521 77 0 0
ODI 0 31 81 625 1081 545 18 0
CDI 0 3 30 372 1410 3027 1319 134
VCDI 0 0 7 155 1048 5001 25970 70190

Date: 2024-03-20:

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 61791 16673 295 317 48 0 0 0
OW 40 1479 438 792 153 0 0 0
VODI 0 349 280 1108 527 44 0 0
ODI 0 48 89 617 1072 266 11 0
CDI 0 9 33 290 1457 2280 892 27
VCDI 0 0 10 169 1322 5150 24871 71796
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 61812 15881 298 436 91 0 0 0
OW 19 1697 303 599 223 24 0 0
VODI 0 746 284 825 490 118 5 0
ODI 0 157 173 701 739 429 29 0
CDI 0 58 55 533 1579 1876 1244 56
VCDI 0 19 32 199 1457 5293 24496 71767

Date: 2024-03-22:

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 62267 16227 261 225 37 0 0 0
OW 21 1542 395 713 176 1 0 0
VODI 0 501 278 1076 497 76 3 0
ODI 0 103 131 608 945 424 33 0
CDI 0 32 48 531 1226 2013 1536 18
VCDI 0 1 2 203 1365 4086 24763 72379
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 62282 15748 378 523 77 5 0 0
OW 6 1623 258 636 316 36 0 0
VODI 0 671 213 689 539 240 6 0
ODI 0 303 154 581 515 456 140 1
CDI 0 57 103 661 1343 1551 1614 27
VCDI 0 4 9 266 1456 4312 24575 72369


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