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: 2023-11-09

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

Model vs. observations, sea ice class contingency tables

Date: 2023-11-03:

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 10710 4348 269 285 40 0 0 0
OW 0 602 156 247 393 47 0 0
VODI 0 132 90 280 622 314 13 0
ODI 0 28 33 162 540 282 16 0
CDI 0 2 5 86 425 545 58 0
VCDI 0 0 1 65 370 2136 8372 14192
...date precedes bulletin

Date: 2023-11-05:

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 10197 3771 182 276 139 1 0 0
OW 0 632 196 363 198 11 0 0
VODI 0 257 136 420 466 286 0 0
ODI 0 46 34 141 380 492 0 0
CDI 0 27 13 56 357 923 30 0
VCDI 0 9 16 44 204 2350 8638 14575
...date precedes bulletin

Date: 2023-11-07:

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 10237 3292 143 108 11 0 0 0
OW 13 640 148 312 51 0 0 0
VODI 0 174 183 606 292 12 0 0
ODI 0 29 37 276 591 250 0 0
CDI 0 6 3 73 421 965 22 0
VCDI 0 1 1 44 203 2643 8928 15151
...date precedes bulletin

Date: 2023-11-09:

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 8970 3140 532 164 31 0 0 0
OW 27 437 192 387 233 10 0 0
VODI 0 175 110 399 473 23 0 0
ODI 0 71 44 206 626 171 1 0
CDI 0 16 8 36 363 751 29 0
VCDI 0 10 3 48 182 2511 6555 18932
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 8968 3132 553 192 72 7 0 0
OW 29 415 175 387 232 3 0 0
VODI 0 195 102 373 483 31 0 0
ODI 0 66 48 208 582 199 0 0
CDI 0 26 8 34 364 710 18 0
VCDI 0 15 3 46 175 2516 6567 18932

Date: 2023-11-11:

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 8999 2855 38 31 4 0 0 0
OW 65 757 208 310 71 0 0 0
VODI 2 296 167 387 406 20 0 0
ODI 0 91 83 256 487 169 0 0
CDI 0 23 29 135 433 423 13 0
VCDI 0 0 4 62 370 2650 7383 18639
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 9005 2806 50 52 9 0 0 0
OW 60 745 191 317 131 3 0 0
VODI 1 361 175 350 389 28 0 0
ODI 0 76 78 271 472 229 0 0
CDI 0 26 19 110 398 381 14 0
VCDI 0 8 16 81 372 2621 7382 18639

Date: 2023-11-13:

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 9419 2392 16 3 2 0 0 0
OW 54 746 69 99 11 0 0 0
VODI 6 275 143 457 310 9 0 0
ODI 0 37 27 423 799 165 0 0
CDI 0 14 24 103 434 969 41 0
VCDI 0 1 4 54 311 4361 9242 14846
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 9391 2197 20 19 1 0 0 0
OW 82 598 76 230 173 0 0 0
VODI 6 424 84 352 445 43 0 0
ODI 0 157 41 239 459 308 0 0
CDI 0 64 37 166 364 517 23 0
VCDI 0 25 25 133 425 4636 9260 14846

Date: 2023-11-15:

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 8644 2855 77 160 49 0 0 0
OW 35 275 118 255 131 8 0 0
VODI 0 81 56 263 498 60 0 0
ODI 0 17 17 117 747 260 2 0
CDI 0 3 6 51 565 1130 70 1
VCDI 0 4 8 70 455 3744 9996 15038
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 8626 2512 50 108 40 0 0 0
OW 51 428 67 185 145 12 0 0
VODI 2 215 103 260 571 138 3 0
ODI 0 54 39 194 645 360 3 0
CDI 0 17 10 76 585 861 31 1
VCDI 0 9 13 93 459 3831 10031 15038

Date: 2023-11-17:

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 7809 3072 52 68 39 1 0 0
OW 50 251 69 226 290 38 0 0
VODI 1 62 36 183 511 101 20 0
ODI 0 24 9 49 574 292 7 0
CDI 0 18 14 43 567 1233 137 2
VCDI 0 36 17 86 386 3336 9426 16731
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 7783 2799 47 96 71 12 3 0
OW 75 392 49 145 126 18 8 0
VODI 2 134 48 203 604 116 12 0
ODI 0 55 11 58 650 482 56 0
CDI 0 37 19 43 486 1119 77 3
VCDI 0 46 23 110 430 3254 9434 16730


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