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

Validation of sea ice concentration - American sector

Bulletin date: 2024-10-24

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

Model vs. observations, sea ice class contingency tables

Date: 2024-10-18:

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 15838 6280 131 156 39 0 0 0
OW 4 660 158 295 216 41 0 0
VODI 0 148 112 342 368 209 4 0
ODI 0 9 10 119 325 471 11 0
CDI 0 13 1 33 376 1116 251 0
VCDI 0 3 7 43 90 2807 10771 4409
...date precedes bulletin

Date: 2024-10-20:

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 16141 5135 79 33 4 0 0 0
OW 4 1049 221 351 107 21 0 0
VODI 0 283 147 483 300 230 11 0
ODI 0 30 25 180 293 389 59 0
CDI 0 2 1 46 279 773 287 0
VCDI 0 0 2 33 140 2743 10148 5837
...date precedes bulletin

Date: 2024-10-22:

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 16421 5298 59 78 18 0 0 0
OW 0 1378 214 228 40 0 0 0
VODI 0 186 138 423 242 49 0 0
ODI 0 21 16 172 492 118 0 0
CDI 0 3 8 61 920 389 0 0
VCDI 0 0 0 4 773 2684 11055 4378
...date precedes bulletin

Date: 2024-10-24:

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 15668 4985 106 174 51 0 0 0
OW 23 841 164 331 263 2 0 0
VODI 0 100 98 320 509 143 0 0
ODI 0 6 17 83 472 356 7 0
CDI 0 0 6 34 237 1100 74 0
VCDI 0 0 0 3 84 3589 10572 5448
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 15682 5108 123 233 91 0 0 0
OW 9 740 145 232 239 5 0 0
VODI 0 81 107 374 514 115 0 0
ODI 0 2 9 79 463 403 9 0
CDI 0 1 7 24 222 1133 76 0
VCDI 0 0 0 3 87 3534 10568 5448

Date: 2024-10-26:

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 13811 5328 117 71 7 2 0 0
OW 0 909 179 275 296 74 0 0
VODI 0 140 95 387 479 283 18 0
ODI 0 17 15 113 353 493 92 0
CDI 0 2 7 41 162 1039 470 0
VCDI 0 0 0 1 26 1968 12021 6575
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13811 5536 141 116 75 14 0 0
OW 0 717 145 264 272 93 1 0
VODI 0 128 106 368 447 264 12 0
ODI 0 13 14 103 324 548 94 0
CDI 0 2 7 36 175 1018 582 0
VCDI 0 0 0 1 30 1922 11912 6575

Date: 2024-10-28:

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 12765 5527 210 179 31 12 0 0
OW 2 649 133 264 172 117 0 0
VODI 0 167 90 338 390 359 10 0
ODI 0 16 12 138 340 441 20 0
CDI 0 14 6 33 248 676 201 0
VCDI 0 0 2 15 70 1840 14394 5985
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 12757 5003 152 137 27 3 0 0
OW 10 1046 152 230 116 88 2 0
VODI 0 294 118 401 418 396 8 0
ODI 0 19 24 161 386 567 20 0
CDI 0 11 6 28 228 719 346 0
VCDI 0 0 1 10 76 1672 14249 5985

Date: 2024-10-30:

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 11803 5546 188 202 3 1 0 0
OW 10 576 183 292 52 0 0 0
VODI 0 95 100 464 378 17 0 0
ODI 0 5 13 124 586 163 9 0
CDI 0 0 2 28 508 908 283 0
VCDI 0 0 0 0 59 1935 13670 7663
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 11813 4691 174 259 55 0 0 0
OW 0 1141 126 255 137 1 0 0
VODI 0 337 137 363 433 187 2 0
ODI 0 42 33 144 609 429 55 0
CDI 0 9 9 65 275 848 285 0
VCDI 0 2 7 24 77 1559 13620 7663

Date: 2024-11-01:

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


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