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

Validation of sea ice concentration - Asian sector

Reference date: 2025-05-15

Model: GLO MFC - NEMO

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

Model vs. observations, sea ice class contingency tables

Date: 2025-05-09:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 28 452 18 14 0 0 0 0
OW 0 35 4 42 0 0 0 0
VODI 0 87 11 206 74 5 20 0
ODI 0 111 61 718 888 84 54 0
CDI 0 0 0 67 1117 2929 689 28
VCDI 0 0 0 0 1 819 8327 15193

Date: 2025-05-11:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 27 421 18 14 0 0 0 0
OW 0 43 13 45 0 1 0 0
VODI 0 115 66 233 52 9 39 0
ODI 0 211 158 663 1014 143 61 0
CDI 0 0 0 73 747 2958 1094 40
VCDI 0 0 0 0 6 407 8137 15274

Date: 2025-05-13:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 48 455 27 25 0 0 0 0
OW 0 55 11 52 5 0 0 0
VODI 0 164 69 250 85 10 34 0
ODI 0 212 115 767 1120 249 80 4
CDI 0 0 0 41 607 3148 939 69
VCDI 0 0 0 0 6 1513 8512 13410

Date: 2025-05-15:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 5 573 28 35 0 0 0 0
OW 0 56 15 69 0 0 0 0
VODI 0 172 67 299 74 8 17 0
ODI 0 195 171 817 1220 211 49 9
CDI 0 0 3 59 646 3155 1021 69
VCDI 0 0 0 0 5 1069 12228 9737

Date: 2025-05-17:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 11 649 35 49 0 0 0 0
OW 0 75 17 54 2 0 0 0
VODI 0 268 76 247 58 2 0 0
ODI 0 271 192 920 1088 150 71 7
CDI 0 4 2 88 739 3315 962 72
VCDI 0 0 0 0 2 684 9458 12514

Date: 2025-05-19:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 2 621 28 70 0 0 0 0
OW 0 86 10 24 2 0 0 0
VODI 0 274 116 450 47 1 4 0
ODI 0 299 163 884 1109 210 43 10
CDI 0 0 1 77 768 3967 922 87
VCDI 0 0 0 0 1 958 11074 9774

Date: 2025-05-21:

Best estimate
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 21 610 38 56 0 0 0 0
OW 0 102 30 37 2 0 0 0
VODI 0 316 154 542 77 3 2 0
ODI 0 334 123 752 1285 274 81 26
CDI 0 0 0 56 822 4069 1150 98
VCDI 0 0 0 0 3 2112 11312 7595

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 0 624 38 59 0 0 0 0
OW 0 131 27 43 5 0 0 0
VODI 0 361 183 535 45 9 1 0
ODI 0 308 96 746 1547 344 35 0
CDI 0 0 0 38 768 4108 2074 248
VCDI 0 0 0 0 2 1447 11121 7139


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