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

Validation of sea ice concentration - American sector

Bulletin date: 2023-12-14

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

Model vs. observations, sea ice class contingency tables

Date: 2023-12-08:

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 2090 3804 358 519 5 0 0 9
OW 46 708 166 642 157 0 0 13
VODI 15 353 85 355 381 36 0 7
ODI 3 82 27 167 246 202 0 4
CDI 0 0 0 39 233 612 15 21
VCDI 0 0 0 15 153 1978 7854 24466
...date precedes bulletin

Date: 2023-12-10:

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 1559 2975 266 415 93 0 0 5
OW 61 647 109 691 539 55 0 12
VODI 0 346 83 341 583 213 0 9
ODI 0 75 25 89 351 344 0 6
CDI 0 0 0 23 197 624 80 1
VCDI 0 0 0 6 94 1644 6617 26688
...date precedes bulletin

Date: 2023-12-12:

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 925 2537 370 512 61 0 0 0
OW 62 195 146 550 168 12 0 0
VODI 7 74 46 631 412 56 0 0
ODI 0 12 0 189 657 336 0 0
CDI 0 0 0 37 515 1156 65 3
VCDI 0 0 0 1 180 2104 7071 26776
...date precedes bulletin

Date: 2023-12-14:

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 475 2098 204 551 61 22 0 0
OW 3 253 145 462 284 65 0 0
VODI 0 84 50 441 415 163 0 0
ODI 0 19 13 311 471 187 10 0
CDI 0 1 1 125 574 531 38 0
VCDI 0 0 0 4 517 3179 6116 27993
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 468 2146 212 577 148 38 0 0
OW 10 229 130 439 258 78 0 0
VODI 0 63 54 440 343 185 0 0
ODI 0 16 16 336 524 250 13 0
CDI 0 1 1 102 547 440 40 2
VCDI 0 0 0 0 502 3156 6111 27991

Date: 2023-12-16:

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 115 1912 213 426 312 8 0 0
OW 6 213 26 542 407 120 0 0
VODI 0 120 21 241 343 378 0 0
ODI 0 22 7 101 306 309 47 0
CDI 0 2 5 45 343 533 215 0
VCDI 0 6 4 106 378 2894 5743 29397
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 111 1934 215 515 420 50 0 0
OW 9 201 24 418 293 119 0 0
VODI 1 122 23 276 344 363 14 0
ODI 0 10 5 95 297 365 88 0
CDI 0 2 5 42 348 498 309 0
VCDI 0 6 4 115 387 2847 5594 29397

Date: 2023-12-18:

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 174 1410 131 336 178 230 0 0
OW 13 135 27 396 266 264 0 0
VODI 0 22 4 291 235 487 0 0
ODI 0 2 0 198 223 434 38 0
CDI 0 0 0 84 205 532 158 0
VCDI 0 0 0 33 351 3255 6474 29280
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 175 1464 135 347 260 219 0 0
OW 12 83 17 254 173 252 0 0
VODI 0 21 10 386 224 517 0 0
ODI 0 1 0 207 237 479 28 0
CDI 0 0 0 111 222 566 197 0
VCDI 0 0 0 33 342 3169 6445 29280

Date: 2023-12-20:

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 61 972 104 218 146 53 0 0
OW 36 241 66 215 183 207 0 0
VODI 6 39 6 131 355 671 23 0
ODI 0 0 2 40 258 385 148 0
CDI 0 0 0 2 287 440 380 13
VCDI 0 0 0 0 200 2627 8080 29271
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 70 963 115 239 203 139 0 0
OW 33 225 36 170 151 283 3 0
VODI 0 59 22 126 303 563 64 0
ODI 0 5 5 61 241 397 235 0
CDI 0 0 0 8 312 364 348 3
VCDI 0 0 0 2 219 2637 7981 29281

Date: 2023-12-22:

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


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