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: 2022-03-31

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-04-04

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 1 34 61 16 0
OW 0 0 0 0 6 17 24 0
VODI 0 0 0 0 6 17 23 0
ODI 0 0 0 0 6 14 19 0
CDI 0 0 0 0 5 12 75 0
VCDI 0 0 0 0 4 523 3775 32264
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 1 40 73 40 0
OW 0 0 0 0 5 14 30 0
VODI 0 0 0 0 6 19 39 0
ODI 0 0 0 0 3 16 43 0
CDI 0 0 0 0 3 9 70 0
VCDI 0 0 0 0 4 513 3710 32264

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 0 221 2912
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 0 221 2912

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 0 0 0 0
CDI 0 0 0 0 0 2 0 0
VCDI 0 0 0 0 0 17 1347 8616
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 28 4
VCDI 0 0 0 0 0 19 1319 8612

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 3 0 0 0
CDI 0 0 0 0 38 20 0 0
VCDI 0 0 0 0 118 586 2668 2221
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 2 0 0 0
CDI 0 0 0 0 14 15 0 0
VCDI 0 0 0 0 143 591 2668 2221

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 3 1 0
VCDI 0 0 0 0 0 46 1574 5622
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 4 2 4
VCDI 0 0 0 0 0 45 1573 5618

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 1 2 0
VCDI 0 0 0 0 0 31 1683 3609
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 2 5 0
VCDI 0 0 0 0 0 30 1680 3609

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 26 3 0 0 0
OW 0 0 0 23 20 0 0 0
VODI 0 0 0 25 19 0 0 0
ODI 0 0 0 13 22 14 0 0
CDI 0 0 0 2 23 25 22 13
VCDI 0 0 0 0 100 245 2973 2763
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 21 0 0 0 0
OW 0 0 0 19 11 0 0 0
VODI 0 0 0 20 17 0 0 0
ODI 0 0 0 15 18 10 0 0
CDI 0 0 0 14 28 20 62 10
VCDI 0 0 0 0 113 254 2933 2766

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2748 3803 42 182 63 10 0 0
OW 0 107 36 168 66 18 0 0
VODI 0 55 17 179 157 32 2 0
ODI 0 10 4 137 256 86 5 0
CDI 0 0 0 10 161 362 40 0
VCDI 0 0 0 19 200 976 1380 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2748 3701 40 189 76 18 0 0
OW 0 160 25 114 75 30 2 0
VODI 0 86 22 168 155 38 9 0
ODI 0 28 12 130 140 82 9 0
CDI 0 0 0 65 165 276 44 0
VCDI 0 0 0 29 292 1040 1363 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 4456 3609 26 132 4 0 0 0
OW 0 71 5 69 27 0 0 0
VODI 0 15 14 102 72 0 0 0
ODI 0 0 1 66 108 4 0 0
CDI 0 0 0 9 176 80 0 0
VCDI 0 0 0 0 88 794 1729 39
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4456 3551 24 126 5 0 0 0
OW 0 98 4 65 24 0 0 0
VODI 0 44 17 73 67 0 0 0
ODI 0 2 1 80 80 5 0 0
CDI 0 0 0 34 151 23 1 0
VCDI 0 0 0 0 148 850 1728 39

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8445 3157 23 81 80 21 0 0
OW 0 136 21 58 40 4 0 0
VODI 0 26 22 91 40 7 0 0
ODI 0 2 1 49 88 16 0 0
CDI 0 0 0 17 103 104 1 0
VCDI 0 0 0 0 45 152 158 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8445 3088 32 117 116 22 0 0
OW 0 133 7 40 36 14 0 0
VODI 0 68 15 46 49 33 0 0
ODI 0 27 8 33 71 36 10 0
CDI 0 5 5 49 50 111 84 0
VCDI 0 0 0 11 74 88 65 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 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 1 0 0 0
CDI 0 0 0 0 39 67 32 9
VCDI 0 0 0 0 29 240 2329 3057
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 18 6 6 19
VCDI 0 0 0 0 51 301 2355 3047

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 0 2 0 0
CDI 0 0 0 0 4 77 15 0
VCDI 0 0 0 0 3 993 4558 2935
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 64 24 0
VCDI 0 0 0 0 7 1007 4549 2935

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10186 4844 56 237 34 0 0 0
OW 0 168 34 213 125 0 0 0
VODI 0 5 4 145 267 7 0 0
ODI 0 0 0 38 464 224 7 0
CDI 0 0 0 13 507 538 129 4
VCDI 0 0 0 10 204 562 1116 68
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10186 4924 68 361 176 1 0 0
OW 0 83 20 111 171 11 0 0
VODI 0 10 6 96 237 89 0 0
ODI 0 0 0 36 155 235 34 0
CDI 0 0 0 38 320 220 125 0
VCDI 0 0 0 14 542 775 1093 72


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