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: 2025-04-29

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

Model vs. observations, sea ice class contingency tables

Date: 2025-04-29:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 17055 14083 111 751 231 16 0 0
OW 20 269 13 148 58 11 0 0
VODI 25 444 15 339 194 38 13 0
ODI 0 254 22 505 450 447 213 3
CDI 0 87 11 438 1045 1342 1114 181
VCDI 0 23 6 188 912 3045 7148 5400

Date: 2025-05-01:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 17686 13968 123 1083 317 34 2 0
OW 1 87 14 162 71 16 1 0
VODI 0 150 17 357 220 90 18 0
ODI 0 134 11 445 434 568 280 6
CDI 0 43 8 337 912 1613 1288 175
VCDI 0 46 4 176 928 3053 6307 5483

Date: 2025-05-03:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 17945 13943 159 1115 322 30 0 0
OW 5 68 8 143 86 18 0 0
VODI 8 100 16 247 260 97 16 1
ODI 10 79 14 401 485 621 253 13
CDI 14 53 9 347 1069 1709 1194 142
VCDI 30 27 4 280 1054 2936 6421 4916

Date: 2025-05-05:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 17747 14072 143 1334 357 54 0 0
OW 6 61 5 154 120 32 0 0
VODI 5 83 13 288 303 164 18 1
ODI 1 66 12 346 718 673 197 28
CDI 9 31 13 346 1242 1800 1010 219
VCDI 29 11 3 217 931 3431 6102 4273


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