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: 2023-04-06

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2023-04-10

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 0 0 0 3 6 0 0
OW 0 0 0 0 3 12 0 0
VODI 0 0 0 0 3 18 0 0
ODI 0 0 0 0 0 30 13 0
CDI 0 0 0 0 0 24 80 0
VCDI 0 0 0 0 0 258 3133 33319
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 16 0 0
OW 0 0 0 0 5 17 0 0
VODI 0 0 0 0 1 35 15 0
ODI 0 0 0 0 0 24 27 0
CDI 0 0 0 0 0 25 44 0
VCDI 0 0 0 0 0 231 3140 33319

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 4
VCDI 0 0 0 0 0 47 662 2420
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 47 662 2418

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 5 7 0 0
CDI 0 0 0 0 12 41 6 0
VCDI 0 0 0 0 22 382 2415 7092
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 19 9 0
VCDI 0 0 0 0 39 411 2412 7092

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 0
VCDI 0 0 0 0 0 0 0 5654
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 5654

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 1 4 0
VCDI 0 0 0 0 0 15 1372 5854
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 11 3
VCDI 0 0 0 0 0 16 1365 5851

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 30 8 0
VCDI 0 0 0 0 0 232 1843 3213
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 1 0 0
CDI 0 0 0 0 0 35 17 15
VCDI 0 0 0 0 0 226 1834 3198

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 0 0 0 0 0 0 0
OW 0 0 0 0 0 4 0 0
VODI 0 0 0 0 0 11 0 0
ODI 0 0 0 0 0 13 0 0
CDI 0 0 0 0 0 27 48 2
VCDI 0 0 0 0 2 200 2433 3591
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 4 0 0
OW 0 0 0 0 0 11 0 0
VODI 0 0 0 0 0 19 0 0
ODI 0 0 0 0 0 16 0 0
CDI 0 0 0 0 0 20 16 19
VCDI 0 0 0 0 2 185 2465 3574

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3091 3774 203 386 135 8 0 0
OW 0 60 28 120 103 19 0 0
VODI 0 29 18 115 173 51 0 0
ODI 0 17 3 65 214 85 0 0
CDI 0 13 1 26 113 236 5 0
VCDI 0 12 0 8 25 1092 1103 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3091 3773 204 398 181 20 0 0
OW 0 67 27 114 91 49 0 0
VODI 0 39 18 90 141 67 0 0
ODI 0 21 3 73 143 90 3 0
CDI 0 4 1 38 149 182 15 0
VCDI 0 1 0 7 58 1083 1090 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 4430 3026 115 149 9 0 0 0
OW 0 50 13 109 36 0 0 0
VODI 0 19 17 81 87 0 0 0
ODI 0 0 9 44 131 15 0 0
CDI 0 0 0 20 150 248 4 0
VCDI 0 0 0 0 33 937 1732 232
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4430 3011 101 163 10 0 0 0
OW 0 49 16 66 31 0 0 0
VODI 0 23 23 67 60 0 0 0
ODI 0 7 6 56 74 4 0 0
CDI 0 5 6 33 167 91 9 3
VCDI 0 0 2 18 104 1105 1727 229

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7766 3427 105 141 28 1 0 0
OW 0 82 45 106 18 6 0 0
VODI 0 2 19 116 45 5 0 0
ODI 0 0 0 48 87 10 0 0
CDI 0 0 0 8 146 192 10 0
VCDI 0 0 0 0 36 334 205 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7766 3389 83 173 56 3 0 0
OW 0 84 39 45 24 10 0 0
VODI 0 36 33 71 31 13 0 0
ODI 0 2 14 76 38 20 2 0
CDI 0 0 0 54 132 255 32 0
VCDI 0 0 0 0 79 247 181 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 6 1 7 0 0 0 0
OW 0 2 5 6 7 0 0 0
VODI 0 7 6 15 10 0 0 0
ODI 0 7 5 18 22 1 0 0
CDI 0 12 3 15 31 27 5 0
VCDI 0 7 7 33 226 1173 2903 1236
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 8 1 0 0 0
OW 0 4 1 1 5 0 0 0
VODI 0 3 5 6 10 0 0 0
ODI 0 3 5 12 8 5 0 0
CDI 0 19 6 19 28 17 5 0
VCDI 0 11 10 48 244 1179 2903 1236

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 5 31 3 4
CDI 0 0 0 0 0 136 29 36
VCDI 0 0 0 0 0 504 3991 3848
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 1 5 1 0
ODI 0 0 0 0 4 55 13 14
CDI 0 0 0 0 0 121 63 53
VCDI 0 0 0 0 0 490 3946 3821

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9585 5681 276 656 154 1 0 0
OW 0 4 2 174 147 5 0 0
VODI 0 0 0 47 253 47 1 0
ODI 0 0 0 2 181 133 11 0
CDI 0 0 0 0 87 367 246 0
VCDI 0 0 0 0 6 633 1373 137
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9585 5685 276 699 251 17 0 0
OW 0 0 2 124 140 28 1 0
VODI 0 0 0 50 218 70 17 0
ODI 0 0 0 6 113 120 33 0
CDI 0 0 0 0 98 306 223 0
VCDI 0 0 0 0 8 645 1357 137


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