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: 2023-08-03

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

Model vs. observations, sea ice class contingency tables

Date: 2023-07-28:

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 97314 24586 1610 2039 157 6 0 0
OW 1 238 450 3467 335 0 0 0
VODI 0 46 25 5362 4882 25 0 0
ODI 0 1 1 272 12904 3166 10 0
CDI 0 0 0 28 2378 17703 5861 2
VCDI 0 0 0 0 51 2074 1963 91
...date precedes bulletin

Date: 2023-07-30:

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 99061 24027 1542 1912 166 3 0 0
OW 1 497 600 3961 390 0 0 0
VODI 0 40 57 4886 5645 36 0 0
ODI 0 0 0 316 10478 4515 39 0
CDI 0 0 0 31 1932 14718 7385 78
VCDI 0 0 0 0 39 840 2638 1215
...date precedes bulletin

Date: 2023-08-01:

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 102301 22737 1610 1477 152 3 0 0
OW 0 175 456 2774 191 0 0 0
VODI 0 13 22 6210 2774 15 0 0
ODI 0 1 0 377 12389 1053 1 0
CDI 0 0 0 16 1645 15539 1797 3
VCDI 0 0 0 1 20 985 7057 5254
...date precedes bulletin

Date: 2023-08-03:

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 103751 22548 1316 1477 109 0 0 0
OW 1 285 547 3283 256 0 0 0
VODI 0 28 31 6000 3165 16 0 0
ODI 0 0 0 320 10796 1424 0 0
CDI 0 0 0 28 2342 14392 2408 4
VCDI 0 0 0 10 42 1855 7039 3575
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 103751 22539 1457 1803 142 0 0 0
OW 1 280 388 3221 255 0 0 0
VODI 0 42 49 5569 3149 16 0 0
ODI 0 0 0 486 10558 1183 0 0
CDI 0 0 0 32 2565 14621 2390 5
VCDI 0 0 0 7 41 1867 7057 3574

Date: 2023-08-05:

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 104779 22523 1158 1498 66 0 0 0
OW 0 604 681 3422 259 0 0 0
VODI 0 19 72 5333 3727 110 0 0
ODI 0 0 0 398 9325 1872 1 0
CDI 0 0 0 44 2153 14257 3492 99
VCDI 0 0 0 2 19 3102 6410 1623
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 104779 22630 1257 1928 84 0 0 0
OW 0 497 580 3065 439 0 0 0
VODI 0 19 74 5130 3495 118 0 0
ODI 0 0 0 529 9186 1558 0 0
CDI 0 0 0 43 2323 14570 3495 89
VCDI 0 0 0 2 22 3095 6408 1633

Date: 2023-08-07:

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 106936 22009 1463 1278 111 0 0 0
OW 0 248 604 2400 116 0 0 0
VODI 0 3 7 7018 1280 4 0 0
ODI 0 0 0 308 12046 657 0 0
CDI 0 0 0 20 2805 16637 560 0
VCDI 0 0 0 1 19 1400 7781 1337
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 106936 21441 1357 2154 165 0 0 0
OW 0 712 582 3180 336 0 0 0
VODI 0 105 133 4858 3404 29 0 0
ODI 0 2 2 751 8050 1957 0 0
CDI 0 0 0 70 4381 13876 2281 0
VCDI 0 0 0 12 41 2836 6060 1337

Date: 2023-08-09:

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 107712 22615 1544 1471 41 0 0 0
OW 0 359 663 2482 136 0 0 0
VODI 0 21 38 6395 1805 8 0 0
ODI 0 0 1 424 9938 2283 0 0
CDI 0 0 0 36 2716 14069 2348 2
VCDI 0 0 0 1 21 1492 5763 2664
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 107712 21801 1417 2246 73 0 0 0
OW 0 993 600 2984 377 0 0 0
VODI 0 201 228 4718 3252 20 0 0
ODI 0 0 1 790 7938 1658 0 0
CDI 0 0 0 54 2960 14704 2985 0
VCDI 0 0 0 17 57 1470 5126 2666

Date: 2023-08-11:

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 110705 20940 1219 1275 57 0 0 0
OW 0 796 782 2546 199 1 0 0
VODI 0 44 265 5902 1586 103 0 0
ODI 0 0 1 1326 8351 2619 377 0
CDI 0 0 0 63 3542 13653 1578 1
VCDI 0 0 0 1 28 1201 6365 1522
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 110653 19948 1277 2394 162 0 0 0
OW 46 1283 490 2698 384 1 0 0
VODI 6 546 454 4560 2577 186 0 0
ODI 0 3 46 1339 7067 1493 137 0
CDI 0 0 0 117 3520 14974 2986 42
VCDI 0 0 0 5 53 923 5197 1481


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