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: 2022-12-01

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-12-05

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 0 410 12 81 22 0 0 0
OW 0 51 2 46 16 0 0 0
VODI 0 31 2 75 44 0 0 0
ODI 0 2 2 62 70 1 0 0
CDI 0 0 0 11 99 15 0 0
VCDI 0 0 0 12 241 2838 7881 24876
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 390 9 60 14 0 0 0
OW 0 60 3 45 15 0 0 0
VODI 0 43 5 79 32 0 0 0
ODI 0 1 1 58 41 0 0 0
CDI 0 0 0 22 83 7 2 0
VCDI 0 0 0 23 307 2847 7879 24876

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 0
VCDI 0 0 0 0 0 74 954 2105
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 74 954 2105

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 5 2 6 0 0 0 0
OW 0 13 1 34 0 0 0 0
VODI 0 6 2 45 1 0 0 0
ODI 0 0 1 26 26 0 0 0
CDI 0 0 0 9 50 56 1 0
VCDI 0 0 0 0 215 2006 2551 4926
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 9 2 19 0 0 0 0
OW 0 10 0 38 3 0 0 0
VODI 0 4 3 33 31 0 0 0
ODI 0 1 1 19 48 4 0 0
CDI 0 0 0 11 74 66 0 0
VCDI 0 0 0 0 136 1992 2552 4926

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 904 10 17 0 0 0 0
OW 0 362 33 245 4 0 0 0
VODI 0 171 24 334 197 0 0 0
ODI 0 47 7 85 240 40 0 0
CDI 0 10 1 28 212 321 0 0
VCDI 0 0 0 1 172 1114 997 78
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 673 10 27 0 0 0 0
OW 0 447 10 56 4 0 0 0
VODI 0 310 32 295 54 0 0 0
ODI 0 62 17 186 192 0 0 0
CDI 0 2 6 103 251 68 3 0
VCDI 0 0 0 43 324 1407 994 78

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 0 12
VCDI 0 0 0 0 0 13 739 6481
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 3 1 32
VCDI 0 0 0 0 0 11 738 6461

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 0 0 0
VCDI 0 0 0 0 0 20 904 4402
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 20 904 4402

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 51 1515 27 192 17 0 0 0
OW 0 99 17 101 35 0 0 0
VODI 0 72 14 117 111 0 0 0
ODI 0 51 3 97 128 3 0 0
CDI 0 35 3 43 87 50 5 0
VCDI 0 7 4 38 155 989 2194 71
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 51 1440 21 180 24 0 0 0
OW 0 105 16 66 35 0 0 0
VODI 0 111 12 97 61 0 0 0
ODI 0 56 9 77 93 0 0 0
CDI 0 31 3 53 89 12 4 0
VCDI 0 36 7 115 231 1030 2195 71

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8625 2188 10 31 0 0 0 0
OW 0 103 2 5 0 0 0 0
VODI 0 78 12 43 2 0 0 0
ODI 0 11 6 31 26 0 0 0
CDI 0 0 0 12 68 78 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 8625 2172 10 33 0 0 0 0
OW 0 118 4 12 0 0 0 0
VODI 0 87 12 44 16 0 0 0
ODI 0 3 4 28 21 0 0 0
CDI 0 0 0 5 42 26 0 0
VCDI 0 0 0 0 17 52 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 6260 2554 25 125 29 1 0 0
OW 0 35 11 97 55 3 0 0
VODI 0 12 1 53 116 24 0 0
ODI 0 0 0 33 130 60 0 0
CDI 0 0 0 6 104 163 0 0
VCDI 0 0 0 0 92 1555 152 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6260 2486 22 117 24 3 0 0
OW 0 56 12 65 55 8 0 0
VODI 0 36 1 55 103 24 0 0
ODI 0 17 1 30 72 38 0 0
CDI 0 6 1 35 104 121 0 0
VCDI 0 0 0 12 168 1612 152 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 10223 2009 32 215 287 113 0 0
OW 0 2 0 9 16 38 0 0
VODI 0 0 0 4 15 17 0 0
ODI 0 0 0 0 5 3 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 10223 2011 32 228 312 163 0 0
OW 0 0 0 0 10 6 0 0
VODI 0 0 0 0 1 2 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 0 855 3 3 0 0 0 0
OW 0 106 5 22 0 0 0 0
VODI 0 84 4 33 7 0 0 0
ODI 0 39 8 41 28 0 0 0
CDI 0 30 3 72 68 26 0 0
VCDI 0 22 6 116 453 1033 2506 230
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 681 1 1 0 0 0 0
OW 0 113 2 5 0 0 0 0
VODI 0 113 5 16 1 0 0 0
ODI 0 83 3 26 9 0 0 0
CDI 0 70 5 40 29 7 0 0
VCDI 0 76 13 199 517 1052 2506 230

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 245 2526 17 42 6 0 0 0
OW 0 437 39 252 64 0 0 0
VODI 0 160 16 417 378 41 0 0
ODI 0 0 0 73 385 283 61 0
CDI 0 0 0 38 102 551 143 0
VCDI 0 0 0 38 87 1392 794 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 245 2490 42 195 128 33 0 0
OW 0 391 14 191 187 57 11 0
VODI 0 242 14 258 365 218 31 0
ODI 0 0 2 116 170 301 39 0
CDI 0 0 0 52 54 228 66 0
VCDI 0 0 0 48 118 1430 851 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 15868 3034 14 23 0 0 0 0
OW 0 260 7 26 0 0 0 0
VODI 0 188 16 54 0 0 0 0
ODI 0 53 4 50 20 0 0 0
CDI 0 16 9 21 61 3 0 0
VCDI 0 0 0 12 99 157 214 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15868 2972 12 21 0 0 0 0
OW 0 290 5 19 0 0 0 0
VODI 0 221 10 32 0 0 0 0
ODI 0 58 13 50 1 0 0 0
CDI 0 10 10 42 44 3 0 0
VCDI 0 0 0 22 135 157 214 0


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