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: 2025-09-25

Model: GLO MFC - NEMO

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

Model vs. observations, sea ice class contingency tables

Date: 2025-09-19:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 94054 7205 160 128 4 0 0 0
OW 0 12 18 142 83 0 0 0
VODI 0 1 6 51 254 43 0 0
ODI 0 0 0 9 197 155 12 0
CDI 0 0 0 1 77 779 268 0
VCDI 0 0 0 0 0 2196 2870 360

Date: 2025-09-21:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 93454 7737 135 96 0 0 0 0
OW 0 27 25 124 62 0 0 0
VODI 0 7 15 91 208 29 3 0
ODI 0 0 4 25 218 127 6 0
CDI 0 0 0 3 120 771 352 0
VCDI 0 0 0 0 1 651 4058 736

Date: 2025-09-23:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 97094 4232 59 37 0 0 0 0
OW 0 84 55 69 19 0 0 0
VODI 0 38 37 145 122 14 0 0
ODI 0 4 10 71 213 69 1 0
CDI 0 0 0 15 227 646 224 12
VCDI 0 0 0 0 4 471 3910 1203

Date: 2025-09-25:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 98107 3220 49 49 1 0 0 0
OW 0 108 37 74 8 0 0 0
VODI 0 63 40 144 170 6 0 0
ODI 0 5 13 56 219 89 0 0
CDI 0 0 0 2 173 736 293 0
VCDI 0 0 0 0 12 873 4192 346

Date: 2025-09-27:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 97243 4060 66 44 1 0 0 0
OW 0 147 44 79 11 0 0 0
VODI 0 60 51 182 159 4 0 0
ODI 0 0 2 35 240 99 0 0
CDI 0 0 0 1 166 815 60 0
VCDI 0 0 0 0 12 1042 4303 159

Date: 2025-09-29:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 97047 4062 100 122 2 0 0 0
OW 0 113 37 104 33 0 0 0
VODI 0 12 16 141 176 14 0 0
ODI 0 0 0 22 175 143 2 0
CDI 0 0 0 0 124 707 131 0
VCDI 0 0 0 0 4 879 4607 312

Date: 2025-10-01:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 97024 3911 74 131 68 12 0 0
OW 0 80 24 50 42 12 0 0
VODI 0 20 27 61 124 42 0 0
ODI 0 3 8 19 108 144 8 0
CDI 0 0 1 11 59 439 94 0
VCDI 0 0 0 0 4 742 5371 372

Date: 2025-10-03:

Best estimate
...observations not yet available


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