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

Validation of sea ice concentration - European sector

Bulletin date: 2025-09-02

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

Model vs. observations, sea ice class contingency tables

Date: 2025-09-02:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 46160 3007 7 33 11 1 0 0
OW 22 121 9 45 8 1 2 0
VODI 9 280 11 164 73 33 17 0
ODI 0 169 17 348 400 470 77 0
CDI 0 11 3 330 1092 1635 687 0
VCDI 0 0 0 64 404 481 428 0

Date: 2025-09-04:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 46258 3282 25 143 37 2 0 0
OW 0 83 5 52 11 1 0 0
VODI 0 135 12 132 68 36 6 0
ODI 0 51 11 212 446 387 48 0
CDI 0 11 7 305 1057 1384 499 0
VCDI 0 0 0 60 379 614 871 0

Date: 2025-09-06:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 46317 3526 29 188 46 2 0 0
OW 0 39 8 37 12 2 1 0
VODI 0 67 6 69 71 12 4 0
ODI 0 31 5 137 427 257 71 0
CDI 0 11 10 271 1010 1140 456 0
VCDI 0 0 0 53 414 850 1051 0

Date: 2025-09-08:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 46474 3388 14 215 75 8 4 0
OW 0 30 1 31 10 1 0 0
VODI 0 41 3 56 58 19 10 0
ODI 0 28 3 107 386 281 42 0
CDI 0 26 10 239 843 1216 210 0
VCDI 0 9 2 85 362 1341 1002 0


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