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: 2025-07-22

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

Model vs. observations, sea ice class contingency tables

Date: 2025-07-22:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 37549 6647 23 164 23 4 0 0
OW 63 826 27 178 36 10 0 0
VODI 21 1132 40 517 189 85 8 0
ODI 0 411 44 616 427 503 87 0
CDI 0 58 13 256 959 3135 425 0
VCDI 0 4 2 44 408 1440 256 0

Date: 2025-07-24:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 39048 7174 107 710 143 35 3 0
OW 0 93 6 141 62 9 9 0
VODI 0 192 27 287 132 63 58 0
ODI 0 184 24 320 408 554 51 0
CDI 0 62 8 204 1307 3125 153 0
VCDI 0 5 3 62 440 1333 88 0

Date: 2025-07-26:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 39388 7038 91 874 203 44 14 0
OW 0 73 10 115 46 14 16 0
VODI 0 150 16 225 123 66 34 0
ODI 0 154 6 239 418 559 36 0
CDI 0 88 5 195 1305 3043 96 0
VCDI 0 16 2 45 423 1414 46 0

Date: 2025-07-28:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 40296 6427 110 855 157 55 30 0
OW 0 69 8 92 22 9 15 0
VODI 0 120 9 182 111 33 39 0
ODI 0 115 9 204 507 505 61 0
CDI 0 38 7 225 1519 2795 132 0
VCDI 0 17 1 69 269 1320 198 0


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