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: 2024-11-07

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

Model vs. observations, sea ice class contingency tables

Date: 2024-11-01:

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 11094 5178 219 247 48 4 0 0
OW 10 614 190 388 124 21 0 0
VODI 0 157 92 361 452 130 0 0
ODI 0 11 13 115 394 244 7 0
CDI 0 4 12 40 405 542 231 0
VCDI 0 0 0 12 113 2091 11729 10574
...date precedes bulletin

Date: 2024-11-03:

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 10649 4466 181 187 51 2 0 0
OW 18 718 231 481 211 41 0 0
VODI 0 178 109 361 394 202 5 0
ODI 0 29 13 92 355 391 23 0
CDI 0 6 17 50 221 581 108 0
VCDI 0 0 1 11 121 2461 12277 10624
...date precedes bulletin

Date: 2024-11-05:

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 9888 3969 225 282 84 0 0 0
OW 6 662 233 384 145 10 0 0
VODI 1 102 109 533 462 75 1 0
ODI 0 10 26 91 576 296 9 0
CDI 0 3 6 32 298 872 179 0
VCDI 0 0 2 10 49 2231 13172 10833
...date precedes bulletin

Date: 2024-11-07:

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 9693 3298 190 215 92 25 0 0
OW 4 528 171 386 322 67 0 0
VODI 0 225 75 363 669 269 7 0
ODI 1 29 11 124 439 381 16 0
CDI 0 27 8 26 277 867 179 0
VCDI 0 8 5 19 76 1914 12583 12277
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 9686 3431 228 265 89 12 0 0
OW 11 485 140 392 322 90 0 0
VODI 1 148 68 305 687 276 8 0
ODI 0 24 11 133 436 401 13 0
CDI 0 18 7 15 255 800 209 0
VCDI 0 9 6 23 86 1944 12555 12277

Date: 2024-11-09:

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 8922 2989 200 398 103 0 0 0
OW 11 451 132 347 277 60 3 0
VODI 0 164 49 167 486 459 21 0
ODI 0 64 29 82 396 654 46 0
CDI 0 41 8 59 255 963 222 0
VCDI 0 33 13 37 65 1293 11239 15128
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 8919 3118 224 449 136 3 1 0
OW 14 324 109 299 229 60 2 0
VODI 0 168 53 181 510 480 16 0
ODI 0 54 25 82 401 617 47 0
CDI 0 38 3 44 239 916 214 0
VCDI 0 40 17 35 67 1353 11251 15128

Date: 2024-11-11:

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 8808 2401 142 366 160 0 0 0
OW 33 460 79 138 142 18 0 0
VODI 0 73 64 244 315 56 3 0
ODI 0 10 26 161 674 296 5 0
CDI 0 4 9 47 476 1933 157 0
VCDI 0 0 0 16 88 1310 11867 15285
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 8784 2276 143 407 230 11 0 0
OW 54 362 81 203 310 64 2 0
VODI 3 185 47 123 418 286 16 0
ODI 0 56 23 131 338 639 73 0
CDI 0 51 13 56 351 906 172 0
VCDI 0 18 13 52 208 1707 11769 15285

Date: 2024-11-13:

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 8591 2206 163 234 267 15 0 0
OW 68 377 119 168 146 19 0 0
VODI 3 118 64 218 221 85 0 0
ODI 0 27 9 110 317 217 10 0
CDI 0 6 8 23 232 1042 204 0
VCDI 0 3 2 31 291 2352 12346 15554
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 8537 1793 138 235 280 21 0 0
OW 111 518 102 189 171 53 0 0
VODI 14 237 74 219 383 200 5 0
ODI 0 85 25 63 185 471 39 0
CDI 0 61 17 41 214 1095 239 0
VCDI 0 43 9 37 241 1890 12277 15554

Date: 2024-11-15:

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 8363 1660 129 226 98 0 0 0
OW 96 433 141 348 256 16 0 0
VODI 8 116 66 275 269 95 0 0
ODI 0 42 21 91 292 247 21 0
CDI 0 4 3 30 160 672 146 0
VCDI 0 0 0 2 169 2072 10982 18317
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 8199 1471 129 243 148 0 0 0
OW 213 375 91 301 213 27 0 0
VODI 53 233 71 259 422 228 23 0
ODI 2 67 25 79 178 369 59 0
CDI 0 75 27 45 126 833 465 13
VCDI 0 34 17 45 157 1645 10602 18304


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