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: 2023-11-02

Model: ARC-MFC PHYS (TOPAZ)

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2023-11-06

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 16 0 0 0 0 0 0
OW 0 6 11 6 2 0 0 0
VODI 0 0 1 67 39 0 0 0
ODI 0 0 0 16 89 37 0 0
CDI 0 0 0 1 81 501 23 0
VCDI 0 0 0 0 0 454 9379 26173
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 0 0 0 0 0
OW 0 16 0 9 8 0 0 0
VODI 0 5 11 35 28 21 0 0
ODI 0 0 1 43 67 46 4 0
CDI 0 0 0 3 107 603 84 0
VCDI 0 0 0 0 1 322 9314 26173

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 36 245 13 64 0 0 0 0
OW 0 2 2 7 0 0 0 0
VODI 0 0 0 30 8 20 0 0
ODI 0 0 0 6 71 42 0 0
CDI 0 0 0 0 35 320 0 0
VCDI 0 0 0 0 24 865 698 631
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 36 231 8 58 0 0 0 0
OW 0 16 7 16 0 12 0 0
VODI 0 0 0 15 27 36 0 0
ODI 0 0 0 17 37 89 0 0
CDI 0 0 0 1 50 184 10 0
VCDI 0 0 0 0 24 926 688 631

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 658 99 86 4 0 0 0
OW 0 42 58 172 34 0 0 0
VODI 0 0 7 203 270 0 0 0
ODI 0 0 0 40 384 81 0 0
CDI 0 0 0 2 86 527 0 0
VCDI 0 0 0 0 0 939 3089 3197
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 651 129 192 60 0 0 0
OW 0 49 27 174 228 0 0 0
VODI 0 0 8 115 283 24 0 0
ODI 0 0 0 21 140 162 0 0
CDI 0 0 0 1 67 409 0 0
VCDI 0 0 0 0 0 952 3089 3197

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1506 1510 141 66 0 0 0 0
OW 0 21 54 245 13 0 0 0
VODI 0 5 6 184 64 0 0 0
ODI 0 1 1 9 156 18 0 0
CDI 0 0 0 1 84 343 0 0
VCDI 0 0 0 0 3 537 685 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1505 1489 167 308 20 0 0 0
OW 1 36 23 121 47 11 0 0
VODI 0 8 11 58 87 40 0 0
ODI 0 4 1 17 64 103 0 0
CDI 0 0 0 0 89 119 0 0
VCDI 0 0 0 1 13 625 685 0

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 43 9 0 0 0 0 0
OW 0 9 20 24 0 0 0 0
VODI 0 2 2 103 0 0 0 0
ODI 0 0 0 25 94 0 0 0
CDI 0 0 0 2 93 123 0 0
VCDI 0 0 0 0 78 3005 3518 74
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 38 2 0 0 0 0 0
OW 0 13 22 14 0 0 0 0
VODI 0 3 7 70 0 0 0 0
ODI 0 0 0 60 23 2 0 0
CDI 0 0 0 10 74 52 0 0
VCDI 0 0 0 0 168 3074 3518 74

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 5
CDI 0 0 0 0 0 0 1 21
VCDI 0 0 0 0 0 93 1985 3194
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 6
CDI 0 0 0 0 0 0 6 36
VCDI 0 0 0 0 0 93 1980 3178

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 562 1719 3 5 2 0 0 0
OW 0 213 48 48 5 0 0 0
VODI 0 13 10 177 14 0 0 0
ODI 0 0 0 35 169 19 0 0
CDI 0 0 0 1 68 321 29 0
VCDI 0 0 0 0 3 427 2426 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 562 1755 31 29 2 0 0 0
OW 0 149 18 99 18 0 0 0
VODI 0 37 6 84 79 51 0 0
ODI 0 4 5 38 87 127 27 0
CDI 0 0 1 16 59 173 403 0
VCDI 0 0 0 0 16 416 2025 0

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8404 2180 36 34 9 0 0 0
OW 20 58 37 98 18 0 0 0
VODI 4 0 1 87 60 0 0 0
ODI 0 0 0 8 138 14 0 0
CDI 0 0 0 0 16 100 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8392 2194 51 102 8 0 0 0
OW 25 43 23 89 72 0 0 0
VODI 10 1 0 30 88 6 0 0
ODI 1 0 0 6 67 33 0 0
CDI 0 0 0 0 6 75 0 0
VCDI 0 0 0 0 0 0 0 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 6036 2071 36 38 0 0 0 0
OW 0 248 86 50 8 0 0 0
VODI 0 1 28 136 40 0 0 0
ODI 0 0 5 58 83 10 0 0
CDI 0 0 0 59 136 188 19 0
VCDI 0 0 0 6 68 682 1526 78
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6036 1967 34 40 0 0 0 0
OW 0 256 44 43 23 0 0 0
VODI 0 79 45 79 42 3 0 0
ODI 0 18 19 85 47 26 0 0
CDI 0 0 13 81 125 135 29 0
VCDI 0 0 0 19 98 716 1516 78

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10860 1601 66 94 55 0 0 0
OW 0 16 20 59 45 27 0 0
VODI 0 0 0 35 59 6 0 0
ODI 0 0 0 0 37 1 0 0
CDI 0 0 0 0 3 3 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10860 1617 71 89 37 1 0 0
OW 0 0 15 59 72 29 0 0
VODI 0 0 0 36 45 3 0 0
ODI 0 0 0 4 41 3 0 0
CDI 0 0 0 0 4 1 0 0
VCDI 0 0 0 0 0 0 0 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 2061 1428 77 59 0 0 0 0
OW 18 152 91 221 3 0 0 0
VODI 0 0 15 445 19 0 0 0
ODI 0 0 0 108 357 34 0 0
CDI 0 0 0 29 137 149 0 0
VCDI 0 0 0 36 109 176 79 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2079 1356 76 105 1 0 0 0
OW 0 117 62 151 7 0 0 0
VODI 0 106 40 408 176 2 0 0
ODI 0 1 5 135 234 68 0 0
CDI 0 0 0 44 92 102 2 0
VCDI 0 0 0 55 115 187 77 0

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7717 574 2 9 0 0 0 0
OW 1 92 16 33 0 0 0 0
VODI 0 9 3 33 6 0 0 0
ODI 0 2 1 11 17 0 0 0
CDI 0 0 0 2 10 0 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7716 533 2 6 0 0 0 0
OW 2 85 4 32 1 0 0 0
VODI 0 53 13 13 16 0 0 0
ODI 0 6 3 13 2 0 0 0
CDI 0 0 0 20 6 0 0 0
VCDI 0 0 0 4 8 0 0 0

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15737 0 2 0 0 0 0 0
OW 7 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15744 0 2 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 0


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