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: 2020-12-24

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-12-28

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 0 436 0 1 0 0 0 0
OW 0 88 4 13 0 0 0 0
VODI 0 65 6 28 2 0 0 0
ODI 0 50 6 29 6 0 0 0
CDI 0 55 6 42 67 8 5 0
VCDI 0 151 15 131 335 930 5236 29187
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 350 0 0 0 0 0 0
OW 0 131 2 2 0 0 0 0
VODI 0 130 9 17 0 0 0 0
ODI 0 57 4 33 4 0 0 0
CDI 0 51 3 37 24 3 4 0
VCDI 0 126 19 155 382 935 5237 29187

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 98 1229 1806
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 1
VCDI 0 0 0 0 0 98 1229 1805

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 0 0 0
VCDI 0 0 0 0 0 5 1170 8807
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 0 0
VCDI 0 0 0 0 0 2 1170 8807

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 12 4 0 0
CDI 0 0 0 0 42 37 4 0
VCDI 0 0 0 0 36 806 1905 2808
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 8 2 0 0
CDI 0 0 0 0 34 19 1 0
VCDI 0 0 0 0 48 826 1908 2808

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 0 0 0
VCDI 0 0 0 0 0 0 6 7240
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 5
VCDI 0 0 0 0 0 0 6 7235

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 3 0
VCDI 0 0 0 0 0 23 1356 3944
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 4 0
VCDI 0 0 0 0 0 23 1355 3944

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 482 24 137 90 0 0 0
OW 0 24 11 64 56 2 0 0
VODI 0 7 3 58 141 10 0 0
ODI 0 4 1 10 125 39 0 0
CDI 0 0 0 7 139 227 22 5
VCDI 0 0 0 0 89 545 2669 1340
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 484 30 164 139 0 0 0
OW 0 19 5 66 86 13 0 0
VODI 0 8 3 24 121 32 0 0
ODI 0 5 1 10 83 65 0 0
CDI 0 1 0 8 117 104 17 6
VCDI 0 0 0 4 94 609 2674 1339

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5851 3193 32 103 0 0 0 0
OW 0 110 24 225 23 0 0 0
VODI 0 15 1 229 182 0 0 0
ODI 0 8 0 54 263 1 0 0
CDI 0 6 1 14 197 17 0 0
VCDI 0 0 0 0 94 217 471 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5851 3053 22 125 13 0 0 0
OW 0 160 19 146 55 0 0 0
VODI 0 92 16 179 94 0 0 0
ODI 0 12 0 88 115 0 0 0
CDI 0 11 0 51 146 2 0 0
VCDI 0 4 1 36 336 233 471 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 6331 2320 2 6 0 0 0 0
OW 0 166 5 14 0 0 0 0
VODI 0 67 20 92 15 0 0 0
ODI 0 17 6 76 30 3 0 0
CDI 0 5 4 52 105 31 0 0
VCDI 0 0 0 32 143 654 1500 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6331 2117 1 6 0 0 0 0
OW 0 222 1 10 5 0 0 0
VODI 0 157 10 24 10 0 0 0
ODI 0 61 16 68 14 4 0 0
CDI 0 18 8 108 54 21 2 0
VCDI 0 0 1 56 210 663 1498 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 8442 3252 29 115 101 50 17 0
OW 0 44 14 59 37 7 7 0
VODI 0 7 6 57 72 18 9 0
ODI 0 0 0 33 82 42 8 0
CDI 0 0 0 8 60 236 58 0
VCDI 0 0 0 0 0 14 104 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8442 3200 30 134 138 69 27 0
OW 0 58 7 41 43 10 14 0
VODI 0 41 7 44 82 46 11 0
ODI 0 4 5 24 16 107 27 0
CDI 0 0 0 29 67 126 60 0
VCDI 0 0 0 0 6 9 64 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 0 680 9 10 0 0 0 0
OW 0 68 5 23 1 0 0 0
VODI 0 55 7 22 15 0 0 0
ODI 0 28 4 25 14 0 0 0
CDI 0 14 8 37 33 6 0 0
VCDI 0 9 3 80 287 853 2630 877
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 589 6 8 0 0 0 0
OW 0 82 3 13 0 0 0 0
VODI 0 78 4 14 14 0 0 0
ODI 0 51 6 17 13 0 0 0
CDI 0 34 9 36 17 5 0 0
VCDI 0 20 8 109 306 854 2630 877

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 6 1 0 0
CDI 0 0 0 0 119 110 2 0
VCDI 0 0 0 0 436 2632 4729 552
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 4 2 0 0
CDI 0 0 0 0 109 95 7 0
VCDI 0 0 0 0 448 2646 4724 552

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14900 3317 15 36 0 0 0 0
OW 0 107 9 19 0 0 0 0
VODI 0 75 19 87 5 0 0 0
ODI 0 50 5 153 113 0 0 0
CDI 0 20 3 48 469 36 0 0
VCDI 0 0 0 9 191 523 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14900 3142 15 10 0 0 0 0
OW 0 174 8 43 0 0 0 0
VODI 0 100 17 62 16 0 0 0
ODI 0 56 2 82 86 0 0 0
CDI 0 60 6 94 322 41 0 0
VCDI 0 37 3 61 354 518 0 0


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