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

Validation of sea ice concentration - American sector

Reference date: 2025-05-29

Model: GLO MFC - NEMO

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

Model vs. observations, sea ice class contingency tables

Date: 2025-05-23:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 105 49 47 0 0 0 0
OW 0 43 34 78 0 1 0 0
VODI 0 30 42 299 62 32 0 0
ODI 0 113 46 496 723 219 55 0
CDI 0 28 26 310 989 2748 1143 3
VCDI 0 0 0 0 47 1300 12676 24122

Date: 2025-05-25:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 176 91 59 0 0 0 0
OW 0 62 43 43 7 0 0 0
VODI 0 110 69 261 97 22 0 0
ODI 0 120 40 447 846 252 24 0
CDI 0 73 46 317 962 3998 1001 0
VCDI 0 0 0 0 39 1641 15102 19918

Date: 2025-05-27:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 322 95 92 2 0 0 0
OW 0 83 23 80 24 1 0 0
VODI 0 92 61 346 177 44 0 0
ODI 0 122 46 454 900 222 6 0
CDI 0 60 28 316 1470 4606 1034 8
VCDI 0 0 0 0 163 2973 17404 14612

Date: 2025-05-29:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 617 130 140 25 0 0 0
OW 0 100 17 76 116 3 0 0
VODI 0 120 43 206 266 29 0 0
ODI 0 156 67 532 895 204 10 0
CDI 0 20 10 353 2228 3969 1564 7
VCDI 0 0 0 2 137 1985 17441 14398

Date: 2025-05-31:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 803 129 165 4 0 0 0
OW 0 77 34 54 116 5 0 0
VODI 0 126 28 178 399 27 0 0
ODI 0 187 86 662 1069 223 3 0
CDI 0 19 15 308 1259 3657 3129 76
VCDI 0 0 0 0 164 3857 13503 15504

Date: 2025-06-02:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 859 206 281 2 0 0 0
OW 0 54 10 187 72 1 0 0
VODI 0 127 28 280 579 42 0 0
ODI 0 148 77 661 1063 196 17 1
CDI 0 14 14 220 1850 4153 2456 45
VCDI 0 0 0 0 114 2420 12781 16908

Date: 2025-06-04:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 943 212 442 6 1 0 0
OW 0 56 16 209 100 29 1 0
VODI 0 116 57 324 607 86 11 0
ODI 0 200 76 684 892 260 40 0
CDI 0 37 39 305 1574 5625 995 8
VCDI 0 0 0 5 103 2345 14696 14766

Date: 2025-06-06:

Best estimate
...observations not yet available


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