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: 2023-11-16

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

Model vs. observations, sea ice class contingency tables

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 96317 12001 717 1206 420 185 0 0
OW 192 636 351 1077 351 153 1 0
VODI 31 175 137 874 879 246 5 0
ODI 5 55 15 413 589 521 9 3
CDI 0 7 1 112 597 760 151 50
VCDI 0 1 0 32 434 5021 23091 39227
...date precedes bulletin

Date: 2023-11-12:

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 95029 12038 602 1071 371 151 2 0
OW 163 620 263 1016 626 134 2 0
VODI 26 354 143 813 1087 264 8 0
ODI 1 71 34 392 735 549 9 1
CDI 0 14 5 147 608 996 124 129
VCDI 0 1 2 35 474 4779 24127 39032
...date precedes bulletin

Date: 2023-11-14:

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 91809 15290 790 1217 336 55 0 0
OW 111 213 195 1008 287 13 0 0
VODI 20 61 84 828 919 95 0 0
ODI 7 0 2 325 1559 337 0 0
CDI 0 0 0 56 945 1307 60 44
VCDI 0 0 0 4 434 6798 24734 37105
...date precedes bulletin

Date: 2023-11-16:

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 90544 14229 736 1556 713 104 0 0
OW 95 293 160 542 615 17 0 0
VODI 12 52 84 467 1258 114 0 0
ODI 0 7 12 236 1187 538 49 3
CDI 0 1 0 104 1046 1497 141 50
VCDI 0 0 0 19 379 5857 22347 41984
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 90565 14180 732 1615 789 112 0 0
OW 75 347 167 516 684 20 0 0
VODI 11 48 83 427 1280 161 13 0
ODI 0 7 10 239 1163 631 48 2
CDI 0 0 0 104 885 1420 125 43
VCDI 0 0 0 23 397 5783 22351 41992

Date: 2023-11-18:

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 90284 13921 681 1122 425 149 0 0
OW 116 409 181 754 505 111 2 0
VODI 14 106 63 686 952 273 9 0
ODI 0 13 4 202 862 461 23 0
CDI 0 0 0 81 778 1388 401 8
VCDI 0 0 0 29 502 4343 23204 43986
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 90303 13844 669 1295 515 169 2 0
OW 98 486 190 614 463 94 2 0
VODI 13 109 67 623 1022 315 10 0
ODI 0 10 3 223 821 494 37 0
CDI 0 0 0 93 705 1445 338 9
VCDI 0 0 0 26 498 4208 23250 43985

Date: 2023-11-20:

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 88952 14694 888 1143 417 146 0 0
OW 61 151 114 965 168 27 0 0
VODI 3 48 16 818 934 57 0 0
ODI 0 6 5 121 1332 338 2 0
CDI 0 3 0 30 532 2114 186 21
VCDI 0 0 0 0 160 3238 18520 50838
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 88865 14295 770 1267 555 206 2 0
OW 132 443 195 725 320 99 4 0
VODI 18 130 47 751 799 401 24 0
ODI 1 32 11 241 651 541 76 2
CDI 0 2 0 80 789 1097 328 126
VCDI 0 0 0 13 429 3576 18274 50731

Date: 2023-11-22:

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 86169 16867 1112 1194 483 123 11 0
OW 71 342 264 808 161 24 0 0
VODI 9 77 100 778 629 34 1 0
ODI 1 7 11 333 1009 240 6 0
CDI 0 0 4 137 887 999 90 17
VCDI 0 0 0 53 919 6512 17376 49190
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 86181 16273 1032 1278 603 178 14 0
OW 52 681 205 662 262 37 6 0
VODI 15 274 188 674 780 317 6 0
ODI 2 59 40 349 562 508 18 0
CDI 0 6 21 183 693 1030 209 17
VCDI 0 0 5 157 1188 5862 17231 49190

Date: 2023-11-24:

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 87245 15964 623 829 446 159 13 0
OW 65 814 336 659 97 31 0 0
VODI 11 239 187 781 492 80 0 0
ODI 0 50 86 391 669 239 4 0
CDI 0 28 29 325 632 688 48 1
VCDI 0 17 22 369 1169 6848 19906 46456
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 87250 15310 584 955 534 219 13 0
OW 67 988 258 574 195 59 0 0
VODI 4 529 189 583 624 325 0 0
ODI 0 154 114 406 474 538 12 0
CDI 0 80 82 330 401 884 88 25
VCDI 0 51 56 506 1277 6020 19858 46432


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