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: 2022-04-28

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-05-02

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 0 0 0 14 23 0 0
OW 0 0 0 0 3 25 1 0
VODI 0 0 0 0 1 27 12 0
ODI 0 0 0 1 2 19 31 0
CDI 0 1 1 5 0 42 69 0
VCDI 0 0 0 5 28 758 5415 30419
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 16 42 2 0
OW 0 0 0 0 2 32 20 0
VODI 0 0 0 0 0 26 42 0
ODI 0 0 0 0 1 26 35 0
CDI 0 0 0 2 1 31 74 0
VCDI 0 1 1 9 28 737 5355 30419

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 1 7
VCDI 0 0 0 0 0 32 543 2550
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 11
VCDI 0 0 0 0 0 32 544 2546

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 1 0 0 0
ODI 0 0 0 0 31 15 0 0
CDI 0 0 0 3 84 45 20 0
VCDI 0 0 0 35 159 485 2898 6206
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 25 14 1 0
CDI 0 0 0 0 76 39 28 0
VCDI 0 0 0 38 174 492 2889 6206

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 1 0 0 0
VODI 0 0 0 0 11 3 0 0
ODI 0 0 0 0 15 4 0 0
CDI 0 0 0 0 37 12 0 0
VCDI 0 0 0 0 163 509 2018 2881
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 1 0 0 0
OW 0 0 0 0 3 0 0 0
VODI 0 0 0 0 4 0 0 0
ODI 0 0 0 0 5 5 0 0
CDI 0 0 0 0 19 8 0 0
VCDI 0 0 0 0 195 515 2018 2881

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 2 0
CDI 0 0 0 0 0 11 20 74
VCDI 0 0 0 0 0 100 1655 5384
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 4 10
CDI 0 0 0 0 0 11 17 122
VCDI 0 0 0 0 0 100 1656 5326

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 21 21 0
VCDI 0 0 0 0 1 411 3198 1674
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 5 0 0
CDI 0 0 0 0 0 41 34 6
VCDI 0 0 0 0 1 386 3185 1668

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 0 0 0
VODI 0 0 0 10 31 3 0 0
ODI 0 0 0 12 81 23 0 0
CDI 0 0 0 9 106 147 8 0
VCDI 0 0 0 0 194 2035 3672 0
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 4 10 0 0 0
ODI 0 0 0 2 61 14 0 0
CDI 0 0 0 3 119 86 4 0
VCDI 0 0 0 22 222 2108 3676 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 3484 3135 42 319 264 19 0 0
OW 0 70 12 153 140 19 0 0
VODI 0 13 5 135 153 28 0 0
ODI 0 8 1 14 178 47 0 0
CDI 0 14 2 5 186 285 0 0
VCDI 0 25 1 52 319 1881 322 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3484 2905 32 320 283 38 0 0
OW 0 233 9 79 148 21 0 0
VODI 0 65 11 124 128 41 0 0
ODI 0 14 3 64 127 52 0 0
CDI 0 7 5 30 176 253 0 0
VCDI 0 41 3 61 378 1874 322 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 4398 3429 32 185 29 0 0 0
OW 0 41 10 96 48 0 0 0
VODI 0 5 5 85 119 0 0 0
ODI 0 0 0 54 139 0 0 0
CDI 0 0 0 19 232 302 10 0
VCDI 0 0 0 0 70 1215 1171 2
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4398 3380 30 202 43 0 0 0
OW 0 57 8 61 78 0 0 0
VODI 0 32 4 75 107 0 0 0
ODI 0 6 4 51 94 16 0 0
CDI 0 0 1 50 164 262 8 0
VCDI 0 0 0 0 151 1239 1173 2

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7962 3389 45 236 105 0 0 0
OW 0 17 9 116 74 0 0 0
VODI 0 1 1 70 131 5 0 0
ODI 0 0 0 13 243 38 0 0
CDI 0 0 0 0 113 399 21 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 7962 3375 46 317 183 0 0 0
OW 0 29 7 38 119 8 0 0
VODI 0 3 2 59 128 30 0 0
ODI 0 0 0 21 139 120 5 0
CDI 0 0 0 0 97 284 16 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 0 18 2 4 0 0 0 0
OW 0 2 1 32 7 0 0 0
VODI 0 0 0 50 33 0 0 0
ODI 0 0 0 3 52 3 0 0
CDI 0 0 0 0 52 102 4 0
VCDI 0 0 0 0 14 502 3056 1866
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 18 2 9 3 0 0 0
OW 0 2 1 24 15 0 0 0
VODI 0 0 0 53 40 1 0 0
ODI 0 0 0 3 38 10 0 0
CDI 0 0 0 0 47 63 3 0
VCDI 0 0 0 0 15 533 3057 1866

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 1 0 0 0
VODI 0 0 0 6 23 0 0 0
ODI 0 0 0 12 31 1 0 0
CDI 0 0 0 18 85 107 21 0
VCDI 0 0 0 8 309 1542 5191 1232
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 7 0 0 0
ODI 0 0 0 2 15 1 0 0
CDI 0 0 0 12 68 87 118 0
VCDI 0 0 0 30 359 1562 5094 1232

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10998 4858 47 144 21 0 0 0
OW 0 68 27 229 100 0 0 0
VODI 0 0 0 86 423 16 0 0
ODI 0 0 0 0 498 251 4 0
CDI 0 0 0 0 241 913 206 0
VCDI 0 0 0 0 1 626 452 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10998 4894 61 306 163 0 0 0
OW 0 32 13 89 169 23 0 0
VODI 0 0 0 62 340 136 0 0
ODI 0 0 0 2 274 233 22 0
CDI 0 0 0 0 323 776 426 0
VCDI 0 0 0 0 15 638 214 0


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