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

Validation of sea ice concentration - Asian sector

Bulletin date: 2023-06-29

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

Model vs. observations, sea ice class contingency tables

Date: 2023-06-23:

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 244 2127 266 575 92 9 0 0
OW 0 144 96 572 276 31 0 0
VODI 0 58 65 612 994 114 2 0
ODI 0 2 16 325 1774 533 41 0
CDI 0 0 0 182 2464 2557 208 0
VCDI 0 0 0 0 181 3541 7250 6731
...date precedes bulletin

Date: 2023-06-25:

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 254 2338 292 534 87 16 0 0
OW 0 148 103 604 275 88 0 0
VODI 0 58 71 521 1193 193 0 0
ODI 0 4 18 229 1748 615 9 0
CDI 0 0 4 181 1732 4017 251 0
VCDI 0 0 0 0 18 2922 9370 4189
...date precedes bulletin

Date: 2023-06-27:

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 252 2829 407 517 34 1 0 0
OW 3 23 99 708 146 33 0 0
VODI 0 0 2 707 932 106 0 0
ODI 0 0 0 156 2639 657 1 0
CDI 0 0 0 38 1117 5501 357 0
VCDI 0 0 0 0 27 3292 9916 1582
...date precedes bulletin

Date: 2023-06-29:

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 265 2761 463 720 55 0 0 0
OW 1 22 84 754 290 12 0 0
VODI 0 2 9 518 1391 230 0 0
ODI 0 0 2 121 2226 811 3 0
CDI 0 0 0 34 1140 6249 1218 0
VCDI 0 0 0 0 17 1982 9184 1518
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 266 2758 461 836 93 1 0 0
OW 0 25 87 611 316 22 0 0
VODI 0 2 8 540 1281 237 0 0
ODI 0 0 2 115 2227 820 4 0
CDI 0 0 0 45 1198 6246 1093 0
VCDI 0 0 0 0 4 1958 9308 1518

Date: 2023-07-01:

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 370 2965 448 582 39 1 0 0
OW 1 41 102 784 361 53 0 0
VODI 0 4 13 550 1413 647 0 0
ODI 0 0 2 82 1624 1072 0 0
CDI 0 0 0 23 666 8358 1221 0
VCDI 0 0 0 0 48 3660 6399 553
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 371 2969 468 723 96 14 0 0
OW 0 35 82 645 367 68 0 0
VODI 0 6 11 557 1392 546 0 0
ODI 0 0 4 75 1565 1176 0 0
CDI 0 0 0 21 707 8019 1143 0
VCDI 0 0 0 0 24 3968 6477 553

Date: 2023-07-03:

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 158 3472 444 392 32 1 0 0
OW 0 17 102 737 148 0 0 0
VODI 0 0 0 1030 776 65 0 0
ODI 0 0 0 108 3372 411 8 0
CDI 0 0 0 27 647 10457 598 0
VCDI 0 0 0 0 22 1739 7266 53
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 158 3399 400 688 183 8 0 0
OW 0 73 112 669 427 98 12 0
VODI 0 17 27 708 1695 352 0 0
ODI 0 0 7 166 1906 595 6 0
CDI 0 0 0 63 757 8850 1257 0
VCDI 0 0 0 0 29 2770 6597 53

Date: 2023-07-05:

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 163 3691 396 489 33 0 0 0
OW 0 57 118 836 208 18 0 0
VODI 0 3 18 1150 904 70 2 0
ODI 0 0 0 157 2822 639 5 0
CDI 0 0 0 56 1083 10085 700 0
VCDI 0 0 0 0 29 3049 5250 51
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 163 3511 362 717 224 25 0 0
OW 0 176 114 844 598 105 1 0
VODI 0 57 44 807 1583 239 4 0
ODI 0 7 12 236 1541 834 14 0
CDI 0 0 0 84 1097 9990 599 0
VCDI 0 0 0 0 36 2668 5339 51

Date: 2023-07-07:

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 1527 2455 339 545 57 0 0 0
OW 0 115 137 948 294 9 0 0
VODI 0 27 49 1083 1258 85 4 0
ODI 0 0 1 161 2677 530 7 0
CDI 0 0 1 89 1682 9673 531 0
VCDI 0 0 0 0 212 4888 2698 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1527 2225 315 817 386 43 1 0
OW 0 252 132 924 902 94 1 0
VODI 0 120 76 676 1486 136 8 0
ODI 0 0 2 284 1572 906 18 0
CDI 0 0 2 125 1630 9364 633 0
VCDI 0 0 0 0 204 4642 2579 0


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