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: 2022-09-29

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-10-03

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 300 3590 16 37 0 0 0 0
OW 0 331 50 241 6 0 0 0
VODI 0 95 21 405 213 1 0 0
ODI 0 19 4 88 573 45 10 0
CDI 0 9 5 41 392 1111 71 0
VCDI 0 0 0 0 3 4616 16179 8430
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 300 3060 17 49 27 6 0 0
OW 0 587 26 127 57 10 0 0
VODI 0 311 34 379 233 43 0 0
ODI 0 51 8 154 305 208 14 0
CDI 0 35 7 74 393 477 289 0
VCDI 0 0 4 29 172 5029 15957 8430

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 45 1247 30 46 36 0 0 0
OW 0 66 1 3 0 0 0 0
VODI 0 18 2 20 12 0 0 0
ODI 0 3 0 11 277 4 0 0
CDI 0 0 0 0 59 105 0 0
VCDI 0 0 0 0 6 31 324 787
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 45 1225 29 46 36 0 0 0
OW 0 66 1 1 8 0 0 0
VODI 0 37 2 10 207 12 0 0
ODI 0 6 1 23 92 57 0 0
CDI 0 0 0 0 41 40 0 0
VCDI 0 0 0 0 6 31 324 787

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 596 2545 47 158 28 0 0 0
OW 0 69 18 148 110 0 0 0
VODI 0 19 9 173 346 3 0 10
ODI 0 0 0 12 501 150 6 17
CDI 0 0 0 0 59 897 50 11
VCDI 0 0 0 0 15 603 2365 1017
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 588 2444 44 198 75 0 0 0
OW 8 99 14 116 399 8 0 0
VODI 0 72 11 81 304 149 0 0
ODI 0 16 5 60 135 237 0 0
CDI 0 2 0 21 82 494 39 0
VCDI 0 0 0 15 64 765 2382 1055

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4781 868 1 4 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
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4781 868 1 4 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

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1413 3500 12 24 0 0 0 0
OW 8 326 36 150 4 0 0 0
VODI 0 24 17 328 191 0 0 0
ODI 0 0 0 3 623 4 0 0
CDI 0 0 0 0 37 380 25 0
VCDI 0 0 0 0 0 9 132 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1421 3582 30 104 15 0 0 0
OW 0 245 31 307 137 0 0 0
VODI 0 23 4 88 455 14 0 0
ODI 0 0 0 6 236 192 0 0
CDI 0 0 0 0 12 187 155 0
VCDI 0 0 0 0 0 0 2 0

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1645 2165 11 19 0 0 0 0
OW 0 76 12 78 3 0 0 0
VODI 0 11 9 112 45 0 0 0
ODI 0 0 0 19 140 6 0 0
CDI 0 0 0 0 67 218 0 0
VCDI 0 0 0 0 6 379 305 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1645 2150 16 72 10 0 0 0
OW 0 75 11 87 31 0 0 0
VODI 0 25 3 43 96 7 0 0
ODI 0 2 2 22 48 66 0 0
CDI 0 0 0 4 65 191 0 0
VCDI 0 0 0 0 11 339 305 0

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4811 1504 4 12 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
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4811 1504 4 12 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

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10731 591 8 1 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
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10731 591 8 1 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

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8041 2127 11 63 13 0 0 0
OW 0 45 9 70 22 0 0 0
VODI 0 3 4 78 78 0 0 0
ODI 0 0 0 12 245 1 0 0
CDI 0 0 0 0 157 167 2 0
VCDI 0 0 0 0 0 328 220 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8041 2117 13 72 16 0 0 0
OW 0 54 6 63 23 0 0 0
VODI 0 4 5 81 107 0 0 0
ODI 0 0 0 7 176 7 0 0
CDI 0 0 0 0 193 159 104 0
VCDI 0 0 0 0 0 330 118 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 12988 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12988 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 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 4440 1053 13 68 21 0 0 0
OW 0 8 7 23 7 0 0 0
VODI 0 0 2 21 29 0 0 0
ODI 0 0 0 0 22 2 0 0
CDI 0 0 0 0 15 23 0 0
VCDI 0 0 0 0 5 44 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4440 1029 11 58 12 0 0 0
OW 0 31 5 23 18 0 0 0
VODI 0 1 6 31 30 0 0 0
ODI 0 0 0 0 16 2 0 0
CDI 0 0 0 0 13 4 0 0
VCDI 0 0 0 0 10 63 0 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 7428 1146 7 6 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
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7428 1146 7 6 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

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 19945 246 7 11 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
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 19945 246 7 11 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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