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

Validation of sea ice concentration - American sector

Bulletin date: 2024-05-02

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

Model vs. observations, sea ice class contingency tables

Date: 2024-04-26:

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 6191 2012 14 15 0 0 0 0
OW 0 631 58 70 39 0 0 0
VODI 0 181 97 321 219 12 0 0
ODI 0 5 10 260 241 115 18 4
CDI 0 3 1 154 790 1154 204 34
VCDI 0 1 1 145 1350 4032 15232 27617
...date precedes bulletin

Date: 2024-04-28:

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 6132 1918 19 6 0 0 0 0
OW 1 702 56 80 12 0 0 0
VODI 0 253 107 356 212 10 0 0
ODI 0 12 22 245 251 136 14 8
CDI 0 7 3 95 897 1426 435 27
VCDI 0 1 3 63 737 3690 13842 29453
...date precedes bulletin

Date: 2024-04-30:

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 6358 1965 10 4 0 0 0 0
OW 2 928 107 67 6 0 0 0
VODI 0 45 119 430 125 8 14 6
ODI 0 0 0 134 516 154 58 11
CDI 0 0 0 96 885 1670 537 10
VCDI 0 0 0 52 554 3286 13971 29103
...date precedes bulletin

Date: 2024-05-02:

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 7004 1371 8 8 1 0 0 0
OW 83 938 40 89 37 4 2 0
VODI 0 108 107 363 218 27 22 4
ODI 0 13 5 171 474 124 43 4
CDI 0 18 17 158 1066 1481 506 28
VCDI 0 1 1 60 718 3121 13305 29483
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 6993 1472 10 19 4 0 0 0
OW 94 846 49 99 39 5 2 0
VODI 0 94 94 343 220 37 23 5
ODI 0 19 7 172 474 120 38 4
CDI 0 17 18 156 1079 1474 505 28
VCDI 0 1 0 60 698 3121 13310 29482

Date: 2024-05-04:

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 7097 1355 11 41 2 0 0 0
OW 4 945 96 194 31 0 0 0
VODI 0 151 99 439 216 22 4 0
ODI 0 39 32 245 472 64 14 0
CDI 0 72 32 278 1676 882 321 2
VCDI 0 236 44 475 1558 3851 12650 27581
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 7080 1483 22 58 4 0 0 0
OW 21 830 94 201 45 2 0 0
VODI 0 130 85 411 240 21 4 0
ODI 0 48 35 238 448 73 18 0
CDI 0 67 33 281 1691 919 293 1
VCDI 0 240 45 483 1527 3804 12674 27582

Date: 2024-05-06:

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 6935 1915 10 44 7 0 0 0
OW 0 664 194 184 36 0 0 0
VODI 0 62 78 951 202 29 0 0
ODI 0 43 22 270 1037 131 16 0
CDI 0 28 22 217 1031 2036 187 1
VCDI 0 0 0 93 835 3426 14780 25745
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 6933 1532 9 57 20 0 0 0
OW 2 853 111 235 60 1 0 0
VODI 0 115 88 490 234 56 1 0
ODI 0 64 39 276 405 144 23 0
CDI 0 105 39 407 1223 1486 503 1
VCDI 0 43 40 294 1206 3935 14456 25745

Date: 2024-05-08:

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 6901 1870 19 106 11 0 0 0
OW 0 621 107 299 99 7 0 0
VODI 0 87 105 693 506 41 1 0
ODI 0 35 17 204 902 289 10 0
CDI 0 30 20 275 1139 1320 482 1
VCDI 0 0 0 137 912 3567 14999 25419
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 6900 1608 9 36 29 0 0 0
OW 1 657 86 230 45 17 0 0
VODI 0 146 62 490 378 24 2 0
ODI 0 70 30 274 546 146 22 0
CDI 0 133 49 315 1387 1346 651 47
VCDI 0 29 32 369 1184 3691 14817 25373

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 6969 1907 14 38 0 0 0 0
OW 0 635 141 262 49 0 0 0
VODI 0 103 82 776 457 21 2 0
ODI 0 64 23 235 971 195 25 2
CDI 0 26 38 320 1238 1427 627 70
VCDI 0 0 3 215 1088 4203 15287 23718
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 6969 1746 17 37 15 0 0 0
OW 0 516 104 226 64 12 0 0
VODI 0 234 59 425 292 42 1 0
ODI 0 79 44 348 494 140 19 1
CDI 0 141 46 401 1748 1453 369 148
VCDI 0 19 31 409 1190 4199 15552 23641


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