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: 2023-06-15

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

Model vs. observations, sea ice class contingency tables

Date: 2023-06-09:

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 75700 15892 1334 3016 451 3 0 0
OW 42 192 140 1599 899 21 0 0
VODI 0 136 66 1149 2723 148 6 0
ODI 0 49 58 475 3328 876 40 0
CDI 0 36 28 401 3571 7463 1696 29
VCDI 0 3 11 110 977 6200 37994 20186
...date precedes bulletin

Date: 2023-06-11:

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 75876 15799 1352 3608 658 1 0 0
OW 41 312 131 1496 1416 43 0 0
VODI 0 166 129 940 2916 291 8 0
ODI 0 61 67 464 2875 1206 53 0
CDI 0 65 47 392 3252 7236 2099 44
VCDI 0 36 17 132 1394 7966 35754 18705
...date precedes bulletin

Date: 2023-06-13:

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 76307 16995 1452 3516 630 138 0 0
OW 37 143 191 1908 901 177 0 0
VODI 0 48 43 1604 2784 310 0 0
ODI 0 31 42 347 4172 1131 44 0
CDI 0 3 3 206 2057 7984 1713 0
VCDI 0 0 0 19 188 7356 42282 12286
...date precedes bulletin

Date: 2023-06-15:

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 77185 17087 1378 3701 724 472 0 0
OW 23 211 205 2124 1047 249 0 0
VODI 0 49 77 1394 2672 645 7 0
ODI 0 31 32 385 2806 1515 70 0
CDI 0 10 13 319 2772 7770 2217 7
VCDI 0 0 0 15 954 7414 29087 22381
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 77185 17138 1399 4267 858 482 0 0
OW 23 145 185 1689 904 253 0 0
VODI 0 62 74 1242 2544 698 11 0
ODI 0 30 32 393 2755 1385 69 0
CDI 0 13 15 333 2906 7645 2194 7
VCDI 0 0 0 14 1008 7602 29107 22381

Date: 2023-06-17:

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 77143 17502 1426 4141 1429 0 0 0
OW 19 263 225 2183 1619 35 0 0
VODI 0 91 110 1216 3107 187 3 0
ODI 0 25 64 473 3115 828 67 0
CDI 0 13 25 387 3302 7333 3472 0
VCDI 0 0 0 138 1522 6284 30645 18656
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 77142 17577 1449 4700 1591 5 0 0
OW 20 190 199 1659 1432 36 0 0
VODI 0 90 106 1165 3133 201 2 0
ODI 0 25 69 474 2979 753 45 0
CDI 0 12 27 412 3365 7085 3285 37
VCDI 0 0 0 128 1594 6587 30855 18619

Date: 2023-06-19:

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 76933 18523 1566 4323 1112 0 0 0
OW 19 138 254 2347 837 13 0 0
VODI 0 28 65 2413 2713 33 3 0
ODI 0 3 10 403 5671 465 21 0
CDI 0 0 0 72 3327 9978 695 0
VCDI 0 0 0 0 1026 5805 31268 16984
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 76933 18133 1469 5528 1827 6 0 0
OW 19 286 164 1818 1520 27 0 0
VODI 0 174 141 1153 2700 183 8 0
ODI 0 68 74 636 2746 714 106 0
CDI 0 31 47 403 4504 7040 3120 175
VCDI 0 0 0 20 1389 8324 28753 16809

Date: 2023-06-21:

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 76693 19694 1731 5434 1019 2 0 0
OW 17 161 233 2665 1123 30 0 0
VODI 0 24 76 1707 3114 80 9 0
ODI 0 7 9 437 4159 900 30 0
CDI 0 3 4 167 3926 9542 878 0
VCDI 0 0 0 0 1345 8663 21865 21301
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 76693 19090 1524 6414 1649 19 0 0
OW 17 386 168 1710 1490 54 3 0
VODI 0 244 191 1035 2359 210 41 0
ODI 0 109 120 735 2578 1064 83 0
CDI 0 60 50 497 4679 8737 4965 20
VCDI 0 0 0 19 1931 9133 17690 21281

Date: 2023-06-23:

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 78067 19186 1781 6460 659 22 0 0
OW 14 265 191 2619 1139 47 8 0
VODI 0 85 91 1394 3229 187 30 0
ODI 0 15 28 470 3422 1068 107 1
CDI 0 2 3 299 4518 8663 1419 0
VCDI 0 0 0 3 858 10746 18489 21463
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 78067 18542 1566 7435 1363 40 8 0
OW 14 395 166 1328 1344 108 21 0
VODI 0 383 181 1039 2171 346 67 0
ODI 0 195 115 718 2339 1406 134 1
CDI 0 38 65 702 5292 10051 4431 2038
VCDI 0 0 1 23 1316 8782 15392 19425


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