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: 2024-01-25

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

Model vs. observations, sea ice class contingency tables

Date: 2024-01-19:

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 60614 12467 108 99 17 0 0 0
OW 810 1930 162 168 58 27 0 0
VODI 1832 903 226 324 187 33 4 0
ODI 1760 338 115 295 256 108 41 0
CDI 0 220 125 304 542 915 479 0
VCDI 0 50 58 341 1241 6757 33186 53710
...date precedes bulletin

Date: 2024-01-21:

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 60206 12914 83 65 17 2 0 0
OW 816 1622 197 204 59 36 1 0
VODI 1824 640 208 409 165 62 19 0
ODI 1773 330 103 336 227 144 34 0
CDI 0 266 88 347 530 1193 807 3
VCDI 0 19 24 150 796 5758 40126 48207
...date precedes bulletin

Date: 2024-01-23:

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 59340 13477 201 102 38 15 0 0
OW 773 1647 176 214 97 8 0 0
VODI 1817 508 235 499 370 96 5 0
ODI 1784 158 118 340 471 210 23 0
CDI 0 131 42 213 581 1619 548 0
VCDI 0 84 38 91 374 4381 36042 53944
...date precedes bulletin

Date: 2024-01-25:

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 59671 12695 156 84 35 11 0 0
OW 730 1557 199 221 71 22 0 0
VODI 1805 721 252 523 281 104 10 0
ODI 1800 261 140 390 396 270 20 0
CDI 0 258 86 302 679 1383 449 52
VCDI 0 139 60 240 406 4388 31215 58728
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 59673 12838 157 96 35 12 0 0
OW 728 1445 207 215 74 27 1 0
VODI 1805 699 248 507 288 102 9 0
ODI 1800 260 131 371 390 269 19 0
CDI 0 250 89 334 686 1382 441 35
VCDI 0 139 61 237 395 4386 31224 58745

Date: 2024-01-27:

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 60382 11804 69 49 20 2 0 0
OW 735 1510 153 177 158 10 0 0
VODI 1794 881 237 504 383 72 15 0
ODI 1812 355 146 325 484 229 42 0
CDI 0 329 111 322 739 1192 281 72
VCDI 0 366 136 355 590 4804 36283 52882
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 60385 11900 78 55 27 3 0 0
OW 732 1475 150 174 141 8 2 0
VODI 1794 855 243 504 409 77 14 0
ODI 1812 322 132 319 484 238 42 0
CDI 0 329 113 322 728 1179 251 49
VCDI 0 364 136 358 585 4804 36312 52905

Date: 2024-01-29:

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 60725 12119 119 49 7 5 0 0
OW 731 2258 221 180 60 13 1 0
VODI 1805 487 285 629 344 48 14 0
ODI 1799 168 43 244 470 320 21 0
CDI 0 464 135 290 673 1125 255 0
VCDI 0 152 66 270 833 5055 30555 57772
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 60721 11719 121 55 10 2 0 0
OW 730 1545 136 146 66 51 1 0
VODI 1790 970 216 387 292 138 29 0
ODI 1819 406 120 283 334 196 38 0
CDI 0 436 121 348 636 784 315 13
VCDI 0 572 155 443 1049 5395 30463 57759

Date: 2024-01-31:

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 61255 11452 80 49 24 8 2 0
OW 790 1875 152 159 65 28 7 0
VODI 1812 767 278 450 259 71 16 0
ODI 1800 228 74 421 561 239 59 0
CDI 0 464 124 339 1013 1018 506 2
VCDI 0 595 142 437 995 6352 30187 55655
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 61152 10933 107 76 53 25 6 0
OW 827 1337 132 204 75 54 19 0
VODI 1850 885 166 309 246 139 50 0
ODI 1828 529 97 281 410 112 63 0
CDI 0 877 162 412 872 699 569 11
VCDI 0 820 186 573 1261 6687 30070 55646

Date: 2024-02-02:

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 59035 12919 176 209 33 7 1 0
OW 804 1533 236 284 86 38 8 0
VODI 1827 714 244 559 356 113 8 0
ODI 1802 235 80 298 618 293 56 0
CDI 0 391 137 421 917 1578 827 3
VCDI 0 836 198 554 1206 6747 27108 57315
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 58863 12351 270 428 126 43 4 0
OW 837 1179 149 225 181 69 13 0
VODI 1903 803 130 277 319 171 67 0
ODI 1859 443 115 272 389 234 73 0
CDI 6 656 99 304 701 1160 611 10
VCDI 0 1196 308 819 1500 7099 27240 57308


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