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

Validation of sea ice concentration - GODAE regions

Bulletin date: 2022-02-17

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-02-21

Best estimate

Forecast

Arctic Deep Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 39 5 51 68 52 15 0
OW 0 6 0 11 14 10 20 0
VODI 0 2 2 1 19 20 21 0
ODI 0 0 0 0 21 26 21 0
CDI 0 0 0 0 39 34 68 0
VCDI 0 0 0 0 174 623 6002 29538
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 39 5 56 79 57 28 0
OW 0 5 1 6 13 22 25 0
VODI 0 3 1 1 10 26 34 0
ODI 0 0 0 0 11 17 38 0
CDI 0 0 0 0 9 12 62 0
VCDI 0 0 0 0 213 631 5960 29538

Queen Elisabeth Islands:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 121 1132 1880
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 121 1132 1880

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 7 9975
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 7 9975

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 25
VCDI 0 0 0 0 0 0 0 5629
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 2
CDI 0 0 0 0 0 0 0 62
VCDI 0 0 0 0 0 0 0 5590

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 6
VCDI 0 0 0 0 0 6 509 6725
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 0 10
VCDI 0 0 0 0 0 6 509 6721

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 0 22 54
VCDI 0 0 0 0 0 184 1564 3502
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 2
CDI 0 0 0 0 0 0 27 61
VCDI 0 0 0 0 0 184 1559 3493

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 3 0 33 34 0 0 0
OW 0 4 1 15 10 0 0 0
VODI 0 5 6 14 11 0 0 0
ODI 0 17 0 7 4 0 0 0
CDI 0 25 0 5 56 28 1 0
VCDI 0 152 13 136 213 1069 4168 301
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1 0 36 35 0 0 0
OW 0 5 4 16 11 0 0 0
VODI 0 13 3 10 10 6 0 0
ODI 0 15 0 6 4 13 0 0
CDI 0 24 0 6 26 29 7 0
VCDI 0 148 13 136 242 1049 4162 301

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2785 3604 56 231 44 2 0 0
OW 0 114 23 222 86 4 0 0
VODI 0 29 9 185 254 24 0 0
ODI 0 7 0 38 375 82 2 0
CDI 0 8 0 5 268 502 21 0
VCDI 0 13 4 24 90 632 1588 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2785 3626 64 339 95 5 0 0
OW 0 74 8 154 163 7 0 0
VODI 0 41 6 114 222 32 0 0
ODI 0 9 10 41 233 108 1 0
CDI 0 9 0 32 232 256 39 0
VCDI 0 16 4 25 172 838 1571 0

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4816 3266 24 106 16 1 0 0
OW 0 177 8 49 13 0 0 0
VODI 0 143 6 90 49 2 0 0
ODI 0 48 3 73 97 4 0 0
CDI 0 2 0 48 135 69 0 0
VCDI 0 0 0 0 79 431 1873 68
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4816 3296 27 122 22 2 0 0
OW 0 135 5 39 16 1 0 0
VODI 0 118 5 46 50 4 0 0
ODI 0 52 2 47 54 7 0 0
CDI 0 28 2 77 103 62 0 0
VCDI 0 7 0 35 144 431 1873 68

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8456 3079 16 40 38 18 0 0
OW 0 106 15 27 6 6 0 0
VODI 0 49 16 70 12 2 0 0
ODI 0 26 1 44 42 0 0 0
CDI 0 28 3 18 125 65 1 0
VCDI 0 21 9 31 111 203 304 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8456 2991 16 45 39 15 0 0
OW 0 115 11 27 7 9 0 0
VODI 0 94 7 31 23 2 0 0
ODI 0 46 13 33 36 0 0 0
CDI 0 39 1 39 37 54 21 0
VCDI 0 24 12 55 192 214 284 0

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 3 6 0 0
OW 0 0 0 0 5 10 0 0
VODI 0 0 0 0 6 19 0 0
ODI 0 0 0 0 4 29 0 0
CDI 0 0 0 0 1 32 18 0
VCDI 0 0 0 0 28 364 3309 1969
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 3 10 0 0
OW 0 0 0 0 8 12 0 0
VODI 0 0 0 0 6 20 2 0
ODI 0 0 0 0 1 28 8 0
CDI 0 0 0 0 0 27 30 1
VCDI 0 0 0 0 29 363 3287 1968

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 32 0 0
VCDI 0 0 0 0 0 579 2339 5637
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 32 0 0
VCDI 0 0 0 0 0 579 2339 5637

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9522 3756 60 342 126 5 0 0
OW 59 108 13 176 165 12 0 0
VODI 8 21 10 109 281 23 0 0
ODI 0 0 0 14 257 64 0 0
CDI 0 0 0 0 225 284 5 0
VCDI 0 0 0 0 47 2815 1702 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9572 3806 63 409 225 20 0 0
OW 11 63 12 149 179 23 0 0
VODI 6 16 6 61 264 51 1 0
ODI 0 0 2 19 201 87 7 0
CDI 0 0 0 3 196 329 11 0
VCDI 0 0 0 0 36 2693 1688 0


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