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

Validation of sea ice concentration - Asian sector

Bulletin date: 2025-05-13

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

Model vs. observations, sea ice class contingency tables

Date: 2025-05-13:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 56 573 0 9 2 1 5 2
OW 6 44 2 17 11 14 29 3
VODI 2 118 6 207 159 128 106 15
ODI 0 140 14 326 386 549 319 169
CDI 0 144 29 373 535 1223 1068 761
VCDI 0 19 8 272 815 2989 8141 12488

Date: 2025-05-15:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 12 806 6 39 5 5 38 5
OW 0 47 4 38 20 15 39 7
VODI 0 83 18 255 148 138 104 39
ODI 0 94 28 332 340 493 360 243
CDI 0 92 40 316 582 1213 1424 877
VCDI 0 40 48 343 912 2570 11435 8630

Date: 2025-05-17:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 21 905 9 86 18 14 56 9
OW 0 50 3 45 34 19 36 4
VODI 0 156 22 187 167 138 123 73
ODI 0 130 23 293 315 520 362 233
CDI 0 128 17 334 535 1123 1322 1123
VCDI 0 126 25 507 850 2330 9927 9885

Date: 2025-05-19:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 6 865 8 83 29 30 42 13
OW 0 46 9 48 39 19 32 10
VODI 0 124 14 238 175 168 115 23
ODI 0 168 15 271 338 620 441 131
CDI 0 144 27 396 594 1656 1812 869
VCDI 0 161 41 540 775 2681 10632 7835


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