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: 2022-10-27

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-10-31

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 13 785 2 7 2 0 0 0
OW 0 80 5 15 4 0 0 0
VODI 0 70 2 21 40 0 0 0
ODI 0 48 2 18 139 33 0 0
CDI 0 38 5 42 75 333 0 0
VCDI 0 54 6 81 179 1153 8505 25145
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13 709 1 5 0 0 0 0
OW 0 78 2 10 11 0 0 0
VODI 0 87 1 9 80 0 0 0
ODI 0 56 2 14 73 93 0 0
CDI 0 57 8 42 57 262 0 0
VCDI 0 88 8 104 218 1164 8505 25145

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 26 6 0 0 0
OW 0 0 0 0 1 0 0 0
VODI 0 0 0 0 0 0 0 0
ODI 0 0 0 0 30 117 0 0
CDI 0 0 0 0 75 151 0 0
VCDI 0 0 0 0 48 1034 752 893
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 26 7 0 0 0
OW 0 0 0 0 0 12 0 0
VODI 0 0 0 0 55 161 0 0
ODI 0 0 0 0 11 47 0 0
CDI 0 0 0 0 24 26 0 0
VCDI 0 0 0 0 63 1056 752 893

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 170 10 30 6 0 0 0
OW 0 49 9 39 18 0 0 0
VODI 0 13 6 206 223 2 0 0
ODI 0 0 0 82 477 99 0 0
CDI 0 0 0 0 324 224 0 0
VCDI 0 0 0 0 20 667 3030 4278
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 125 7 27 77 0 0 0
OW 0 68 9 68 152 21 0 0
VODI 0 29 5 156 203 83 0 0
ODI 0 10 4 65 215 41 0 0
CDI 0 0 0 41 202 121 1 0
VCDI 0 0 0 0 219 726 3029 4278

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 966 3227 12 54 0 0 0 0
OW 6 181 26 126 23 0 0 0
VODI 0 51 18 265 160 3 0 0
ODI 0 1 3 39 250 24 0 0
CDI 0 0 0 0 38 61 0 0
VCDI 0 0 0 0 0 34 86 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 968 3162 16 106 10 0 0 0
OW 4 206 22 178 58 0 0 0
VODI 0 71 12 164 246 3 0 0
ODI 0 12 4 8 85 24 0 0
CDI 0 9 3 12 36 40 0 0
VCDI 0 0 2 16 36 55 86 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 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 14 6 9 0 0
ODI 0 0 0 0 148 265 6 0
CDI 0 0 0 0 28 1381 377 34
VCDI 0 0 0 0 0 148 3299 1531
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 10 0 0
OW 0 0 0 0 21 110 0 0
VODI 0 0 0 14 140 528 15 0
ODI 0 0 0 0 21 751 200 13
CDI 0 0 0 0 0 322 591 52
VCDI 0 0 0 0 0 82 2876 1500

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 13 68 0 0
ODI 0 0 0 0 0 269 13 0
CDI 0 0 0 0 3 1212 249 0
VCDI 0 0 0 0 0 280 2343 876
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 13 70 0 0
OW 0 0 0 0 0 187 13 0
VODI 0 0 0 0 0 312 81 0
ODI 0 0 0 0 0 567 117 0
CDI 0 0 0 0 3 464 168 0
VCDI 0 0 0 0 0 229 2226 876

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2043 2330 16 42 0 0 0 0
OW 0 246 37 290 19 0 0 0
VODI 0 3 1 223 273 2 0 0
ODI 0 0 0 0 349 104 0 0
CDI 0 0 0 0 13 247 2 0
VCDI 0 0 0 0 0 81 10 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2032 2134 34 307 77 1 0 0
OW 11 421 20 209 270 6 0 0
VODI 0 24 0 39 207 46 0 0
ODI 0 0 0 0 99 118 0 0
CDI 0 0 0 0 1 145 0 0
VCDI 0 0 0 0 0 118 12 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 9625 1583 16 24 0 0 0 0
OW 0 2 2 19 7 0 0 0
VODI 0 0 0 9 16 0 0 0
ODI 0 0 0 0 24 2 0 0
CDI 0 0 0 0 0 2 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 9625 1584 18 40 8 0 0 0
OW 0 1 0 8 11 0 0 0
VODI 0 0 0 4 19 1 0 0
ODI 0 0 0 0 9 3 0 0
CDI 0 0 0 0 0 0 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 6629 2516 22 86 45 13 0 0
OW 0 27 4 100 45 12 0 0
VODI 0 3 3 82 84 17 0 0
ODI 0 0 0 30 124 36 0 0
CDI 0 0 0 5 123 228 3 0
VCDI 0 0 0 0 11 337 1111 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6629 2428 13 102 73 28 0 0
OW 0 89 6 26 39 31 0 0
VODI 0 29 10 57 47 44 0 0
ODI 0 0 0 85 78 58 0 0
CDI 0 0 0 33 129 72 4 0
VCDI 0 0 0 0 66 410 1110 0

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11848 1028 11 76 25 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
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11848 1028 11 76 25 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

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1418 1911 31 312 94 9 0 0
OW 0 5 4 87 98 88 0 0
VODI 0 0 0 87 170 118 0 0
ODI 0 0 0 34 223 139 1 0
CDI 0 0 0 1 85 260 8 0
VCDI 0 0 0 0 40 396 184 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1418 1864 29 300 189 211 0 0
OW 0 52 6 133 232 148 1 0
VODI 0 0 0 24 47 91 8 0
ODI 0 0 0 25 43 64 0 0
CDI 0 0 0 35 76 73 0 0
VCDI 0 0 0 4 123 423 184 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 5812 2501 6 58 0 0 0 0
OW 1 100 5 33 0 0 0 0
VODI 0 34 5 19 10 0 0 0
ODI 0 2 0 1 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 5809 2475 4 65 0 0 0 0
OW 4 54 0 4 0 0 0 0
VODI 0 97 9 34 9 0 0 0
ODI 0 11 3 8 1 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 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 19806 366 3 10 0 0 0 0
OW 0 11 1 11 0 0 0 0
VODI 0 0 0 1 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 19806 362 2 10 0 0 0 0
OW 0 13 2 1 0 0 0 0
VODI 0 2 0 11 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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