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: 2025-08-26

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

Model vs. observations, sea ice class contingency tables

Date: 2025-08-26:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 11373 4642 10 50 6 2 0 0
OW 7 408 16 62 17 3 0 0
VODI 8 738 29 292 121 63 9 0
ODI 0 704 61 962 1338 650 34 0
CDI 0 133 8 636 3084 2773 40 0
VCDI 0 0 0 45 1517 2377 28 0

Date: 2025-08-28:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 11575 5711 40 166 18 7 0 0
OW 0 208 15 88 18 10 0 0
VODI 0 349 29 293 145 62 8 0
ODI 0 376 42 795 1295 554 6 0
CDI 0 120 22 669 3131 2188 24 0
VCDI 0 9 3 98 1887 2266 19 0

Date: 2025-08-30:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 11737 6025 66 312 55 1 0 0
OW 0 125 10 91 29 12 1 0
VODI 0 218 23 217 179 65 12 0
ODI 0 285 37 721 1209 521 12 0
CDI 0 125 21 678 2995 2370 31 0
VCDI 0 13 4 138 1767 2108 33 0

Date: 2025-09-01:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 11596 6136 72 500 128 8 0 0
OW 0 89 8 82 39 8 0 0
VODI 0 146 12 211 170 80 0 0
ODI 0 273 31 660 1276 533 0 0
CDI 0 146 19 687 3141 2088 0 0
VCDI 0 29 10 261 2133 1674 0 0


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