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: 2023-09-14

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

Model vs. observations, sea ice class contingency tables

Date: 2023-09-08:

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 85998 3101 51 21 0 0 0 0
OW 2713 595 184 211 2 0 0 0
VODI 1084 139 193 632 187 5 0 0
ODI 0 11 34 387 1199 152 0 0
CDI 0 0 1 3 680 3410 31 0
VCDI 0 0 0 0 1 1761 76 0
...date precedes bulletin

Date: 2023-09-10:

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 85837 3111 45 29 0 0 0 0
OW 2687 687 152 221 1 0 0 0
VODI 1113 163 181 643 234 9 0 0
ODI 0 13 43 363 1198 209 0 0
CDI 0 0 0 3 523 2733 0 0
VCDI 0 0 0 0 54 2518 92 0
...date precedes bulletin

Date: 2023-09-12:

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 85486 3529 74 72 5 0 0 0
OW 2878 635 176 159 11 0 0 0
VODI 830 92 168 757 335 7 0 0
ODI 0 0 5 219 1294 186 0 0
CDI 0 0 0 0 333 3319 0 0
VCDI 0 0 0 0 12 2268 12 0
...date precedes bulletin

Date: 2023-09-14:

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 85195 3474 85 135 31 0 0 0
OW 2933 659 136 201 73 6 0 0
VODI 718 84 99 511 576 40 1 0
ODI 0 0 0 96 1356 277 6 0
CDI 0 0 0 2 517 3095 2 0
VCDI 0 0 0 0 6 2516 32 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 85195 3390 88 146 33 0 0 0
OW 2933 725 125 186 89 5 0 0
VODI 718 102 105 509 547 41 0 0
ODI 0 0 2 99 1397 392 7 0
CDI 0 0 0 5 487 2976 2 0
VCDI 0 0 0 0 6 2520 32 0

Date: 2023-09-16:

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 85026 3492 66 120 0 0 0 0
OW 2882 745 148 218 60 0 0 0
VODI 778 87 119 506 551 19 0 0
ODI 0 0 1 214 944 556 2 0
CDI 0 0 0 11 271 3081 62 0
VCDI 0 0 0 0 0 2528 375 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 85028 3418 70 123 0 0 0 0
OW 2893 819 143 212 73 0 0 0
VODI 765 87 120 531 512 14 0 0
ODI 0 0 1 190 946 629 2 0
CDI 0 0 0 13 295 2978 71 0
VCDI 0 0 0 0 0 2563 366 0

Date: 2023-09-18:

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 84699 3776 88 148 12 0 0 0
OW 2645 570 168 132 18 0 0 0
VODI 1106 47 108 437 274 9 0 0
ODI 0 1 4 132 606 94 1 0
CDI 0 0 0 14 333 3021 20 0
VCDI 0 0 0 0 4 3464 931 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 84778 3491 83 158 12 0 0 0
OW 2822 837 173 230 108 0 0 0
VODI 850 66 111 376 493 79 0 0
ODI 0 0 1 94 535 868 21 0
CDI 0 0 0 5 99 2952 46 0
VCDI 0 0 0 0 0 2689 885 0

Date: 2023-09-20:

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 84593 3797 93 107 0 0 0 0
OW 2606 569 176 158 14 0 0 0
VODI 1150 52 90 401 239 4 0 0
ODI 0 5 9 162 458 72 0 0
CDI 0 0 0 47 410 2024 80 0
VCDI 0 0 0 0 77 4475 994 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 84668 3459 89 102 0 0 0 0
OW 2768 883 173 265 88 1 0 0
VODI 913 81 105 402 442 47 0 0
ODI 0 0 1 92 529 657 25 0
CDI 0 0 0 14 139 2682 341 0
VCDI 0 0 0 0 0 3188 708 0

Date: 2023-09-22:

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 84060 4093 115 131 16 0 0 0
OW 2560 458 152 270 51 3 0 0
VODI 1208 54 75 338 258 35 0 0
ODI 0 3 8 154 410 52 10 0
CDI 0 0 0 82 460 1515 101 0
VCDI 0 0 0 0 4 3836 2350 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 84129 3751 102 140 22 0 0 0
OW 2674 800 177 331 160 12 0 0
VODI 1025 55 65 360 427 88 5 0
ODI 0 2 6 130 442 491 31 0
CDI 0 0 0 14 145 2293 860 0
VCDI 0 0 0 0 3 2557 1565 0


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