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: 2024-05-16

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

Model vs. observations, sea ice class contingency tables

Date: 2024-05-10:

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 68461 14781 156 179 2 0 0 0
OW 9 2242 480 811 118 0 0 0
VODI 0 247 310 2022 809 56 7 0
ODI 0 85 41 901 1989 382 46 2
CDI 0 55 51 570 3298 5016 1684 73
VCDI 0 6 12 372 2012 8016 33778 45664
...date precedes bulletin

Date: 2024-05-12:

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 69043 14187 99 112 3 0 0 0
OW 10 2646 404 546 95 6 0 0
VODI 0 753 519 1800 581 88 12 0
ODI 0 162 122 1201 1831 402 65 0
CDI 0 104 77 983 4083 5131 1867 13
VCDI 0 3 15 447 1943 7257 32845 45288
...date precedes bulletin

Date: 2024-05-14:

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 69554 14758 111 105 5 0 0 0
OW 13 2822 676 711 79 7 0 0
VODI 0 291 401 2832 632 39 6 0
ODI 0 50 57 954 2579 285 7 0
CDI 0 19 51 793 3622 6340 928 2
VCDI 0 0 1 123 1083 5375 32523 46909
...date precedes bulletin

Date: 2024-05-16:

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 71311 13515 70 80 8 0 0 0
OW 74 2922 509 598 126 0 1 0
VODI 3 655 530 2494 727 98 12 0
ODI 3 75 82 1115 2005 370 29 0
CDI 4 47 66 1021 3196 4961 1517 4
VCDI 0 1 0 115 1469 5776 31650 47504
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 71310 13630 76 102 19 0 0 0
OW 73 2763 520 605 134 1 1 0
VODI 5 698 499 2365 730 91 12 0
ODI 3 69 100 1228 1965 326 31 0
CDI 4 55 62 1018 3221 5030 1545 35
VCDI 0 0 0 105 1462 5757 31620 47473

Date: 2024-05-18:

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 71678 13495 92 87 7 0 0 0
OW 66 2862 477 619 128 0 0 0
VODI 5 849 534 2419 624 86 15 0
ODI 1 95 94 1207 1769 338 54 3
CDI 4 100 61 1039 3713 5386 1195 101
VCDI 0 0 0 188 1576 5374 31446 46956
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 71677 13616 110 105 16 0 0 0
OW 69 2718 471 637 131 0 0 0
VODI 3 843 501 2309 646 71 20 0
ODI 1 118 116 1285 1697 335 49 5
CDI 4 106 60 1081 3766 5219 1496 388
VCDI 0 0 0 142 1561 5559 31145 46667

Date: 2024-05-20:

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 71605 14955 113 98 3 0 0 0
OW 24 3246 970 818 51 1 0 0
VODI 5 96 158 3513 591 27 4 0
ODI 2 25 27 772 2932 271 22 0
CDI 0 28 22 606 3679 7612 605 30
VCDI 0 0 0 34 816 5220 31624 44138
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 71531 13943 104 112 26 0 0 0
OW 98 2865 393 624 114 3 0 0
VODI 2 1061 522 2230 558 91 18 0
ODI 1 186 130 1349 1667 355 56 2
CDI 4 238 102 1195 4054 5993 1489 66
VCDI 0 57 39 331 1653 6689 30692 44100

Date: 2024-05-22:

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 72746 14393 113 117 4 0 0 0
OW 49 3457 795 892 46 5 0 0
VODI 3 343 336 2744 568 66 2 0
ODI 2 33 28 960 2349 303 37 1
CDI 0 59 34 736 3863 7076 1231 20
VCDI 0 31 21 230 1329 6124 33295 40302
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 72691 13259 128 161 20 0 0 0
OW 102 2909 409 592 116 30 2 0
VODI 2 1438 499 1898 511 121 24 0
ODI 1 296 121 1262 1493 287 64 3
CDI 4 185 119 1338 4130 6396 2050 33
VCDI 0 229 51 428 1889 6740 32425 40287

Date: 2024-05-24:

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 73173 14529 115 210 11 0 0 0
OW 408 3091 584 917 107 7 0 0
VODI 26 415 334 2349 710 76 3 1
ODI 1 78 69 1195 1895 340 34 7
CDI 0 87 61 947 3722 7408 1671 28
VCDI 0 53 32 252 1474 6716 29464 42143
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 73013 13140 122 269 30 0 0 0
OW 329 2558 311 710 161 10 1 0
VODI 245 1700 398 1592 628 120 21 0
ODI 18 269 157 1382 1265 397 117 8
CDI 3 223 143 1394 3875 6369 2686 69
VCDI 0 363 64 523 1960 7651 28347 42102


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