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: 2022-12-29

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2023-01-02

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 3 0 0 0 0 0 0
OW 0 41 1 0 0 0 0 0
VODI 0 48 0 1 0 0 0 0
ODI 0 41 5 12 3 0 0 0
CDI 0 36 2 41 30 6 0 0
VCDI 0 33 4 104 572 912 4618 30389
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 2 0 0 0 0 0 0
VODI 0 23 1 0 0 0 0 0
ODI 0 34 0 4 2 0 0 0
CDI 0 61 6 22 5 1 0 0
VCDI 0 82 5 132 598 917 4618 30389

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 2 330 2801
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 2 330 2801

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 24 32 5 4
VCDI 0 0 0 0 23 563 2408 6923
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 23 27 7 10
VCDI 0 0 0 0 24 568 2406 6917

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 2 0 0 0
CDI 0 0 0 0 11 4 0 0
VCDI 0 0 0 0 65 648 1823 3101
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 5 0 0 0
CDI 0 0 0 0 12 5 0 0
VCDI 0 0 0 0 61 647 1823 3101

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 0
VCDI 0 0 0 0 0 0 0 7246
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 0 7246

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 0 0
VCDI 0 0 0 0 0 16 493 4817
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 16 493 4817

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 172 4 18 11 0 0 0
OW 0 80 4 83 46 0 0 0
VODI 0 113 5 93 95 5 0 0
ODI 0 52 3 22 125 42 0 0
CDI 0 47 3 22 84 173 7 0
VCDI 0 192 18 149 282 833 2993 555
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 92 4 53 92 5 0 0
OW 0 95 4 95 42 11 0 0
VODI 0 127 3 46 107 38 0 0
ODI 0 91 1 9 83 79 2 0
CDI 0 91 5 12 56 173 67 3
VCDI 0 160 20 172 263 747 2931 552

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7117 2326 18 26 0 0 0 0
OW 37 327 11 53 0 0 0 0
VODI 0 204 6 62 10 0 0 0
ODI 0 155 2 56 38 0 0 0
CDI 0 105 11 54 108 4 0 0
VCDI 0 116 8 68 204 129 76 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7143 2026 22 29 0 0 0 0
OW 11 391 7 61 0 0 0 0
VODI 0 530 7 49 15 0 0 0
ODI 0 154 7 45 32 1 0 0
CDI 0 95 4 38 78 6 0 0
VCDI 0 37 9 97 235 126 76 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 6013 2200 10 95 34 0 0 0
OW 0 96 2 18 22 0 0 0
VODI 0 100 1 18 46 0 0 0
ODI 0 70 4 21 35 7 0 0
CDI 0 69 13 38 52 24 0 0
VCDI 0 68 11 156 418 886 1158 11
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6013 2106 9 87 32 0 0 0
OW 0 103 2 12 18 0 0 0
VODI 0 110 3 23 40 0 0 0
ODI 0 74 3 28 26 6 0 0
CDI 0 85 4 21 63 22 0 0
VCDI 0 125 20 175 428 889 1158 11

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8195 3267 36 156 123 107 0 0
OW 0 43 20 68 34 47 39 0
VODI 0 1 2 82 38 68 22 0
ODI 0 0 0 18 74 64 3 0
CDI 0 0 0 0 110 66 2 0
VCDI 0 0 0 0 21 275 7 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8195 3221 36 181 162 229 63 0
OW 0 71 10 17 36 87 1 0
VODI 0 18 11 67 29 59 4 0
ODI 0 1 1 42 34 24 2 0
CDI 0 0 0 17 74 56 1 0
VCDI 0 0 0 0 65 172 2 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 0 310 8 46 32 0 0 0
OW 0 31 4 14 42 9 0 0
VODI 0 9 4 25 39 28 0 0
ODI 0 0 0 15 34 40 4 0
CDI 0 0 0 1 49 60 19 0
VCDI 0 0 0 0 76 324 2999 1581
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 286 9 50 42 5 0 0
OW 0 38 2 6 36 7 0 0
VODI 0 24 3 11 36 27 4 0
ODI 0 2 2 21 26 33 10 0
CDI 0 0 0 11 41 49 15 0
VCDI 0 0 0 2 91 340 2993 1581

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 1 39 0 0
CDI 0 0 0 0 0 543 73 3
VCDI 0 0 0 0 0 979 3823 3126
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 2 1 0
ODI 0 0 0 0 0 91 74 0
CDI 0 0 0 0 1 303 130 0
VCDI 0 0 0 0 0 1165 3691 3129

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15430 2600 23 35 1 0 0 0
OW 6 103 10 47 17 0 0 0
VODI 0 111 6 60 72 0 0 0
ODI 0 56 2 25 227 10 0 0
CDI 0 7 2 26 194 136 0 0
VCDI 0 0 0 0 66 402 494 41
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15399 2532 17 27 3 0 0 0
OW 29 95 16 39 24 0 0 0
VODI 8 78 4 54 83 0 0 0
ODI 0 81 2 36 137 9 0 0
CDI 0 91 3 31 179 53 0 0
VCDI 0 0 1 6 151 486 494 41


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