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: 2021-07-22

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-07-26

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 1028 11 6 0 0 0 0
OW 0 149 45 112 3 0 0 0
VODI 0 40 19 565 176 0 0 0
ODI 0 0 1 137 4464 417 0 0
CDI 0 0 0 6 1097 14451 1782 0
VCDI 0 0 0 0 0 4756 7079 558
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 775 2 6 0 0 0 0
OW 0 219 29 63 9 0 0 0
VODI 0 180 30 377 679 41 0 0
ODI 0 43 15 348 3212 3245 90 0
CDI 0 0 0 32 1822 11380 3199 2
VCDI 0 0 0 0 18 4958 5572 556

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 0 301 13 40 0 0 0 0
OW 0 19 5 18 1 0 0 0
VODI 0 3 1 71 18 0 0 0
ODI 0 0 0 29 89 7 0 0
CDI 0 0 0 14 156 590 0 0
VCDI 0 0 0 56 427 585 636 54
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 299 14 48 0 0 0 0
OW 0 18 4 20 4 0 0 0
VODI 0 6 1 57 25 1 0 0
ODI 0 0 0 31 67 16 0 0
CDI 0 0 0 3 145 361 0 0
VCDI 0 0 0 69 450 804 636 54

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 912 15 57 4 0 0 0
OW 0 99 18 99 13 0 0 0
VODI 0 0 4 273 157 0 0 0
ODI 0 0 0 49 1592 254 0 0
CDI 0 0 0 0 376 3068 148 0
VCDI 0 0 0 0 0 1077 1702 65
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 895 22 124 18 0 0 0
OW 0 102 11 133 64 0 0 0
VODI 0 14 4 183 561 10 0 0
ODI 0 0 0 38 884 501 0 0
CDI 0 0 0 0 615 2252 116 0
VCDI 0 0 0 0 0 1636 1734 65

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1252 1497 4 3 0 0 0 0
OW 0 93 31 78 0 0 0 0
VODI 0 4 4 227 67 0 0 0
ODI 0 0 0 16 1207 296 0 0
CDI 0 0 0 0 158 717 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 1252 1483 14 14 0 0 0 0
OW 0 101 17 94 25 0 0 0
VODI 0 10 8 214 395 0 0 0
ODI 0 0 0 2 924 645 0 0
CDI 0 0 0 0 88 368 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 214 3047 43 211 0 0 0 0
OW 0 341 74 471 6 0 0 0
VODI 0 2 7 965 299 0 0 0
ODI 0 0 0 21 1545 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 214 3085 73 508 3 0 0 0
OW 0 242 29 571 86 0 0 0
VODI 0 63 22 554 1108 0 0 0
ODI 0 0 0 35 653 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 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 2583 2387 3 5 0 0 0 0
OW 2 60 15 22 1 0 0 0
VODI 0 1 2 87 39 0 0 0
ODI 0 0 0 0 109 2 0 0
CDI 0 0 0 0 4 4 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 2583 2291 6 4 0 0 0 0
OW 2 104 5 27 4 0 0 0
VODI 0 50 8 46 65 0 0 0
ODI 0 3 1 32 71 6 0 0
CDI 0 0 0 5 13 0 0 0
VCDI 0 0 0 0 0 0 0 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 3136 1489 2 1 0 0 0 0
OW 0 39 22 96 3 0 0 0
VODI 0 0 1 107 108 12 0 0
ODI 0 0 0 8 302 129 0 0
CDI 0 0 0 4 47 825 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 3136 1431 10 20 0 0 0 0
OW 0 89 11 94 27 4 0 0
VODI 0 8 4 84 173 55 0 0
ODI 0 0 0 15 229 292 0 0
CDI 0 0 0 3 31 592 0 0
VCDI 0 0 0 0 0 23 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 10086 1144 4 8 0 0 0 0
OW 0 25 6 30 0 0 0 0
VODI 0 0 0 22 3 0 0 0
ODI 0 0 0 0 3 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 10086 1102 2 4 0 0 0 0
OW 0 54 1 19 0 0 0 0
VODI 0 13 7 37 1 0 0 0
ODI 0 0 0 0 5 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 8028 2889 22 115 0 0 0 0
OW 0 85 23 116 0 0 0 0
VODI 0 4 4 228 61 0 0 0
ODI 0 0 0 11 109 1 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 8028 2836 23 156 0 0 0 0
OW 0 131 18 154 13 0 0 0
VODI 0 11 8 156 95 1 0 0
ODI 0 0 0 4 62 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 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 3817 1795 18 48 19 0 0 0
OW 7 0 0 37 16 0 0 0
VODI 0 0 0 7 21 0 0 0
ODI 0 0 0 0 18 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 3818 1744 17 60 23 0 0 0
OW 6 51 1 32 24 0 0 0
VODI 0 0 0 0 24 0 0 0
ODI 0 0 0 0 3 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 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 6638 1250 23 166 34 0 0 0
OW 0 12 4 83 39 0 0 0
VODI 0 0 0 62 153 0 0 0
ODI 0 0 0 1 122 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 6638 1254 24 237 100 0 0 0
OW 0 8 3 56 108 0 0 0
VODI 0 0 0 19 118 0 0 0
ODI 0 0 0 0 22 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 19646 531 6 26 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 19646 531 6 26 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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