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

Validation of sea ice concentration - European sector

Reference date: 2025-10-09

Model: GLO MFC - NEMO

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

Model vs. observations, sea ice class contingency tables

Date: 2025-10-03:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 97115 4107 67 65 19 0 0 0
OW 0 109 19 39 45 2 0 0
VODI 0 44 52 78 67 19 0 0
ODI 0 2 10 87 108 86 0 0
CDI 0 0 0 14 182 462 36 3
VCDI 0 0 0 0 22 2859 3074 293

Date: 2025-10-05:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 96940 4267 42 77 28 2 0 0
OW 0 115 25 37 39 1 0 0
VODI 0 44 24 89 91 27 2 0
ODI 0 0 7 59 158 138 20 0
CDI 0 0 0 1 43 735 312 0
VCDI 0 0 0 0 0 1883 3622 257

Date: 2025-10-07:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 97824 3628 49 51 8 0 0 0
OW 0 88 33 47 25 0 0 0
VODI 0 27 41 111 74 5 0 0
ODI 0 1 7 67 173 70 1 0
CDI 0 0 0 12 202 1173 298 0
VCDI 0 0 0 0 10 2526 2357 177

Date: 2025-10-09:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 97891 3829 47 37 15 0 0 0
OW 0 75 26 30 24 2 0 0
VODI 0 53 57 103 46 16 2 0
ODI 0 2 22 118 141 58 6 0
CDI 0 0 0 15 158 1083 707 0
VCDI 0 0 0 0 9 1715 2798 0

Date: 2025-10-11:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 96191 4906 161 198 52 2 0 0
OW 0 35 32 66 80 12 0 0
VODI 0 8 19 137 96 41 3 0
ODI 0 0 0 34 183 100 25 0
CDI 0 0 0 0 65 512 566 0
VCDI 0 0 0 0 0 1259 4296 6

Date: 2025-10-13:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 95828 4983 169 209 53 0 0 0
OW 0 47 28 77 66 5 0 0
VODI 0 30 26 80 146 18 0 0
ODI 0 12 4 53 203 83 9 0
CDI 0 0 0 12 137 293 90 0
VCDI 0 0 0 0 13 1832 4330 249

Date: 2025-10-15:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 95432 5001 192 321 101 17 0 0
OW 0 47 39 74 62 11 0 0
VODI 0 17 24 111 122 22 0 0
ODI 0 8 3 105 165 73 6 0
CDI 0 0 0 28 218 327 137 0
VCDI 0 0 0 0 8 1463 4391 560

Date: 2025-10-17:

Best estimate
...observations not yet available


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