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

Validation of sea ice concentration - European sector

Bulletin date: 2024-04-04

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

Model vs. observations, sea ice class contingency tables

Date: 2024-03-29:

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 56089 13785 54 86 56 8 0 0
OW 661 1338 258 315 77 4 1 0
VODI 1741 426 193 468 431 128 19 0
ODI 1882 119 91 265 432 474 101 0
CDI 0 75 62 279 658 1370 1774 0
VCDI 0 5 5 58 295 1404 11723 5652
...date precedes bulletin

Date: 2024-03-31:

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 56147 13518 99 118 15 1 0 0
OW 707 1375 249 279 94 34 4 0
VODI 1746 575 165 440 380 107 17 0
ODI 1875 377 120 308 482 484 49 0
CDI 0 115 80 344 716 1346 1582 0
VCDI 0 2 10 122 371 1717 11163 5529
...date precedes bulletin

Date: 2024-04-02:

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 56345 13768 68 46 15 3 2 0
OW 717 1465 190 206 53 26 11 0
VODI 1741 504 274 613 316 69 22 0
ODI 1882 86 70 389 728 353 91 0
CDI 0 62 61 289 794 1793 1100 0
VCDI 0 19 15 46 155 1451 11253 5771
...date precedes bulletin

Date: 2024-04-04:

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 56038 13615 59 54 12 2 1 0
OW 732 1429 208 209 73 29 11 0
VODI 1747 598 283 567 290 56 9 0
ODI 1874 145 100 449 639 387 103 0
CDI 0 64 83 338 763 2031 2174 0
VCDI 0 2 3 16 104 892 9469 7204
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 56038 13667 58 53 13 2 1 0
OW 732 1371 198 197 80 31 10 0
VODI 1747 612 294 545 268 54 8 0
ODI 1874 139 103 477 579 339 97 0
CDI 0 62 80 341 836 2086 2270 0
VCDI 0 2 3 20 105 885 9381 7204

Date: 2024-04-06:

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 56348 13366 27 36 8 7 0 0
OW 732 1595 183 199 95 27 3 0
VODI 1749 677 293 492 255 61 17 0
ODI 1871 156 111 393 506 328 56 0
CDI 0 61 70 341 726 1714 2612 0
VCDI 0 7 6 34 125 964 10512 6099
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 56348 13470 31 38 11 7 0 0
OW 732 1480 188 209 100 26 3 0
VODI 1749 691 279 449 227 61 12 0
ODI 1871 143 114 410 490 269 57 0
CDI 0 69 71 352 752 1793 2723 0
VCDI 0 9 7 37 135 945 10405 6099

Date: 2024-04-08:

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 56356 13744 51 70 24 0 0 0
OW 731 1563 245 173 37 8 2 0
VODI 1762 374 296 780 313 32 7 0
ODI 1857 35 54 322 861 376 70 0
CDI 0 24 13 155 698 2171 1038 0
VCDI 0 10 9 30 61 1096 10096 7318
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 56356 13271 48 59 29 8 1 0
OW 730 1474 195 201 68 13 5 0
VODI 1751 646 236 517 235 48 22 0
ODI 1869 230 103 358 638 306 59 0
CDI 0 90 65 324 852 2042 2314 1
VCDI 0 39 21 71 172 1266 8812 7317

Date: 2024-04-10:

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 56373 13836 57 62 17 1 1 0
OW 735 1386 238 250 77 11 3 0
VODI 1760 370 230 596 392 71 10 0
ODI 1859 59 76 282 441 538 43 0
CDI 0 30 39 222 825 1975 1416 0
VCDI 0 0 0 7 120 1165 10061 7228
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 56375 13139 58 71 28 4 4 0
OW 731 1440 124 161 84 29 1 0
VODI 1747 699 236 453 252 94 19 0
ODI 1874 268 111 312 446 476 71 0
CDI 0 126 102 374 855 2029 2604 4
VCDI 0 9 9 48 207 1129 8835 7224

Date: 2024-04-12:

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 56738 13033 58 63 20 0 0 0
OW 726 1524 172 196 80 24 5 0
VODI 1762 618 297 502 249 95 52 0
ODI 1854 147 120 440 544 286 129 0
CDI 0 69 68 322 1143 2072 1165 0
VCDI 0 0 1 30 140 948 9665 7505
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 56738 12335 70 79 39 2 0 0
OW 722 1448 109 136 70 41 12 0
VODI 1757 942 232 362 163 106 47 0
ODI 1863 442 152 467 482 227 150 0
CDI 0 222 147 472 1268 2202 2348 20
VCDI 0 2 6 37 154 847 8459 7485


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