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

Validation of sea ice concentration - Full domain

Bulletin date: 2022-03-03

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

Model vs. observations, sea ice class contingency tables

Date: 2022-02-25:

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 51510 24989 4020 1480 368 94 69 0
OW 55 358 348 309 234 114 26 0
VODI 0 224 271 323 367 188 46 0
ODI 0 106 126 281 360 216 84 0
CDI 0 84 83 199 449 573 136 0
VCDI 0 148 140 311 1224 5594 34334 57207
...date precedes bulletin

Date: 2022-02-27:

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 56847 21205 2819 883 570 199 28 0
OW 55 336 309 374 226 163 23 0
VODI 0 214 226 307 359 248 69 0
ODI 0 83 163 218 382 284 78 0
CDI 0 40 144 185 560 749 208 2
VCDI 0 122 276 560 1322 6096 30915 59201
...date precedes bulletin

Date: 2022-03-01:

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 57415 20098 3738 819 425 188 61 0
OW 54 289 335 366 236 95 15 0
VODI 0 137 204 388 401 210 36 0
ODI 0 54 114 222 457 296 89 0
CDI 0 48 104 191 529 704 448 25
VCDI 0 164 98 322 1069 5886 29679 61039
...date precedes bulletin

Date: 2022-03-03:

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 55380 23271 2469 806 454 137 99 0
OW 55 365 254 344 294 62 30 0
VODI 0 194 183 397 425 150 42 0
ODI 0 83 95 276 441 260 88 0
CDI 0 57 95 172 644 694 319 1
VCDI 0 136 130 490 1200 5327 28144 62985
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 55380 23273 2473 804 480 142 98 0
OW 55 345 238 342 275 57 31 0
VODI 0 217 192 397 424 128 45 0
ODI 0 83 101 274 423 255 79 0
CDI 0 52 91 183 648 702 313 1
VCDI 0 136 131 485 1208 5346 28156 62985

Date: 2022-03-05:

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 55669 21373 4164 894 355 108 129 0
OW 55 393 192 410 242 37 43 0
VODI 0 256 113 369 450 106 71 0
ODI 0 127 63 224 450 201 109 0
CDI 0 71 86 255 771 508 437 0
VCDI 0 115 87 282 1356 5159 26986 64332
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 55669 21411 4154 876 368 107 136 0
OW 55 363 194 423 225 37 39 0
VODI 0 254 121 382 422 105 64 0
ODI 0 121 70 224 464 210 106 0
CDI 0 73 86 248 773 460 437 0
VCDI 0 113 80 281 1372 5200 26993 64332

Date: 2022-03-07:

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 57130 22163 1493 998 537 175 86 0
OW 54 319 283 508 287 74 30 0
VODI 0 96 214 478 522 144 43 0
ODI 0 13 75 314 681 315 74 0
CDI 0 12 28 217 785 1050 409 0
VCDI 0 7 69 314 1337 5371 27197 63146
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 57129 21954 1451 1100 639 222 105 0
OW 55 407 232 375 258 82 49 0
VODI 0 181 198 331 451 147 61 0
ODI 0 44 134 255 507 225 100 0
CDI 0 13 64 327 719 853 430 0
VCDI 0 11 83 441 1575 5600 27094 63146

Date: 2022-03-09:

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 56574 20138 4233 1008 460 109 107 0
OW 55 214 468 483 308 63 32 0
VODI 0 47 212 546 411 146 57 0
ODI 0 23 49 345 519 236 80 0
CDI 0 22 27 212 814 734 386 4
VCDI 0 68 89 340 1374 5121 25238 65696
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 56574 20047 4038 1130 574 148 148 0
OW 55 249 449 313 283 74 66 0
VODI 0 90 319 448 357 178 91 0
ODI 0 30 109 337 348 234 123 0
CDI 0 28 57 271 777 624 423 24
VCDI 0 68 106 435 1547 5151 25049 65676

Date: 2022-03-11:

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 57194 19888 4539 911 463 106 76 0
OW 54 422 303 292 310 79 23 0
VODI 0 257 347 280 343 159 41 0
ODI 0 89 193 216 351 234 57 0
CDI 0 44 135 302 517 749 268 0
VCDI 0 139 252 775 1331 5340 27754 62215
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 57194 19432 4299 946 583 215 118 0
OW 54 456 297 215 272 110 41 0
VODI 0 466 253 249 255 199 75 0
ODI 0 170 260 200 288 208 94 0
CDI 0 116 278 302 475 684 326 2
VCDI 0 199 382 864 1442 5251 27565 62213


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