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

Validation of sea ice concentration - Full domain

Bulletin date: 2024-02-01

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2024-01-26:

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 66750 15440 252 199 3 0 0 0
OW 3 1302 389 648 120 3 0 0
VODI 0 581 227 1230 441 57 0 0
ODI 0 248 108 608 935 159 0 0
CDI 0 209 95 384 1481 1679 286 82
VCDI 0 138 101 437 1045 6981 26120 66002
...date precedes bulletin

Date: 2024-01-28:

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 66464 15245 196 158 18 0 0 0
OW 3 1459 365 591 173 24 0 0
VODI 0 636 258 1190 441 130 4 0
ODI 0 253 76 543 914 212 16 0
CDI 0 244 77 407 1300 1041 365 53
VCDI 0 249 141 512 1463 6821 26968 65733
...date precedes bulletin

Date: 2024-01-30:

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 66314 15722 209 214 22 0 0 0
OW 45 1991 418 493 111 1 0 0
VODI 4 448 227 1249 507 31 0 0
ODI 0 137 38 449 916 272 20 0
CDI 0 239 75 417 1226 1766 488 20
VCDI 0 196 82 521 1573 7602 26570 64130
...date precedes bulletin

Date: 2024-02-01:

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 66566 15115 225 205 27 0 0 0
OW 94 1711 356 538 110 2 0 0
VODI 19 597 316 1210 416 42 0 0
ODI 0 165 53 561 1001 220 9 0
CDI 0 326 77 501 1526 2183 474 16
VCDI 0 473 127 667 1380 8145 24152 65138
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 66561 15079 224 222 33 0 0 0
OW 99 1754 365 539 106 2 0 0
VODI 19 600 299 1187 432 45 1 0
ODI 0 176 67 565 969 235 8 0
CDI 0 310 67 477 1520 2212 541 14
VCDI 0 468 132 692 1400 8098 24085 65140

Date: 2024-02-03:

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 65202 15825 340 360 26 0 0 0
OW 77 1814 366 618 114 3 0 0
VODI 21 546 303 1218 442 78 0 0
ODI 0 184 49 628 1048 240 22 0
CDI 0 282 56 581 1480 1714 602 29
VCDI 0 635 138 790 1864 10390 21662 64996
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 65205 15781 350 396 33 0 0 0
OW 80 1853 354 622 113 7 0 0
VODI 15 573 301 1153 476 89 0 0
ODI 0 179 53 640 1009 220 22 0
CDI 0 266 54 566 1489 1857 705 28
VCDI 0 634 140 818 1854 10252 21559 64997

Date: 2024-02-05:

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 65603 16505 252 182 11 0 0 0
OW 92 1870 642 675 72 2 0 0
VODI 1 216 125 1562 483 21 0 0
ODI 0 168 52 527 1153 160 0 0
CDI 0 355 122 486 1475 2515 234 6
VCDI 0 1 13 360 1503 9275 22808 65216
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 65628 15496 240 198 15 0 0 0
OW 68 1832 379 654 133 20 0 0
VODI 0 821 251 1008 389 69 0 0
ODI 0 240 96 569 794 225 8 1
CDI 0 270 88 641 1410 1633 459 15
VCDI 0 456 152 722 1956 10026 22575 65206

Date: 2024-02-07:

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 65152 16886 225 175 18 0 0 0
OW 64 1808 442 639 123 5 0 0
VODI 0 448 205 1220 445 32 0 0
ODI 0 152 66 593 1010 146 4 0
CDI 0 136 70 438 1445 2496 453 5
VCDI 0 131 68 481 1807 8432 24262 64661
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 65124 15824 197 232 38 0 0 0
OW 43 1879 293 436 190 22 0 0
VODI 48 895 241 846 382 47 0 0
ODI 1 347 98 635 807 193 5 0
CDI 0 279 116 588 1284 2074 421 4
VCDI 0 337 131 809 2147 8775 24293 64662

Date: 2024-02-09:

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 64619 16937 243 247 11 0 0 0
OW 47 1747 375 575 128 7 0 0
VODI 0 634 249 1030 509 38 0 0
ODI 0 215 92 547 1152 185 3 0
CDI 0 170 81 485 1207 2451 439 1
VCDI 0 239 66 547 1832 8380 24049 65206
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 64634 15811 262 421 66 6 0 0
OW 20 1825 218 358 230 16 0 0
VODI 11 1134 274 757 414 75 0 0
ODI 1 459 109 556 829 224 6 0
CDI 0 315 131 516 1183 1901 395 21
VCDI 0 398 112 823 2117 8839 24090 65186


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