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: 2025-07-29

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

Model vs. observations, sea ice class contingency tables

Date: 2025-07-29:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 40142 4737 20 125 11 4 0 0
OW 129 682 24 144 17 6 1 0
VODI 148 1015 42 427 118 52 27 0
ODI 6 297 28 544 659 636 57 0
CDI 1 45 10 321 1615 2488 186 0
VCDI 0 10 3 60 280 1161 352 0

Date: 2025-07-31:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 40861 6223 81 502 81 11 0 0
OW 1 94 16 118 44 7 3 0
VODI 0 152 15 211 126 77 18 0
ODI 0 102 17 270 602 613 41 0
CDI 0 24 5 189 1753 2497 128 0
VCDI 0 10 3 43 272 1383 37 0

Date: 2025-08-02:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 41046 6470 126 585 112 30 4 0
OW 0 64 11 87 21 15 2 0
VODI 0 128 11 139 73 79 9 0
ODI 0 93 8 187 603 587 78 0
CDI 0 41 10 180 1607 2039 299 0
VCDI 0 24 3 74 507 971 307 0

Date: 2025-08-04:

Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 42143 5780 63 447 85 40 0 0
OW 0 86 4 53 15 13 1 0
VODI 0 153 3 96 87 73 5 0
ODI 0 102 7 117 605 466 42 0
CDI 0 69 5 234 1971 2082 238 0
VCDI 0 27 3 69 323 805 318 0


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