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: 2022-12-15

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-12-19

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 2 1 44 12 0 0 0
OW 0 0 0 28 33 0 0 0
VODI 0 0 0 13 74 1 0 0
ODI 0 0 0 9 51 6 0 0
CDI 0 0 0 5 53 20 0 0
VCDI 0 0 0 0 95 1828 6878 27749
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 2 1 53 21 0 0 0
OW 0 0 0 15 39 0 0 0
VODI 0 0 0 13 67 1 0 0
ODI 0 0 0 10 48 7 0 0
CDI 0 0 0 5 31 24 0 0
VCDI 0 0 0 3 112 1823 6878 27749

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 43 720 2370
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 43 720 2370

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 0 131 1537 8314
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 0 131 1537 8314

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 11 11 0 0 0
VODI 0 1 0 64 174 0 0 0
ODI 0 0 0 23 148 62 0 0
CDI 0 0 0 13 52 97 18 0
VCDI 0 0 0 4 84 861 3479 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 1 0 0 0
OW 0 0 0 3 63 0 0 0
VODI 0 1 0 54 153 39 0 0
ODI 0 0 0 25 64 34 0 0
CDI 0 0 0 16 57 62 11 0
VCDI 0 0 0 17 131 885 3486 552

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 1 0 0
CDI 0 0 0 0 0 18 3 2
VCDI 0 0 0 0 0 247 1620 5355
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 27 5 1
VCDI 0 0 0 0 0 239 1618 5356

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 2
VCDI 0 0 0 0 0 7 611 4706
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 21
VCDI 0 0 0 0 0 7 611 4687

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 830 11 80 53 0 0 0
OW 0 79 17 84 35 0 0 0
VODI 0 22 9 156 68 7 0 0
ODI 0 13 0 37 147 36 2 0
CDI 0 19 3 25 64 161 36 0
VCDI 0 10 4 114 318 559 2690 642
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 604 7 69 77 0 0 0
OW 0 200 10 72 36 7 0 0
VODI 0 114 18 125 60 15 0 0
ODI 0 18 2 62 111 46 6 0
CDI 0 21 2 30 57 113 47 4
VCDI 0 16 5 138 344 582 2675 638

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6393 3273 19 102 39 0 0 0
OW 0 89 20 78 53 0 0 0
VODI 0 15 1 103 100 5 0 0
ODI 0 0 0 24 114 71 0 0
CDI 0 0 0 3 56 104 0 0
VCDI 0 0 0 0 21 318 330 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6393 3282 29 143 79 0 0 0
OW 0 80 7 77 63 5 0 0
VODI 0 14 1 58 84 39 0 0
ODI 0 1 3 21 68 50 0 0
CDI 0 0 0 10 48 53 0 0
VCDI 0 0 0 1 41 351 330 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 5889 2538 12 102 10 0 0 0
OW 0 64 6 64 28 0 0 0
VODI 0 37 7 57 62 0 0 0
ODI 0 19 4 24 84 0 0 0
CDI 0 4 9 21 107 47 0 0
VCDI 0 0 0 37 175 1534 755 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5889 2525 12 97 11 0 0 0
OW 0 70 5 59 18 0 0 0
VODI 0 52 5 57 53 0 0 0
ODI 0 12 9 29 77 0 0 0
CDI 0 2 5 32 112 77 0 0
VCDI 0 1 2 31 195 1504 755 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 9164 2639 40 158 157 204 0 0
OW 0 57 12 47 31 38 0 0
VODI 0 3 1 48 46 25 0 0
ODI 0 0 0 12 42 31 3 0
CDI 0 0 0 0 51 94 9 0
VCDI 0 0 0 0 0 67 9 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9164 2627 47 200 208 253 0 0
OW 0 46 0 7 26 28 1 0
VODI 0 26 5 34 18 63 9 0
ODI 0 0 1 24 40 41 7 0
CDI 0 0 0 0 35 70 4 0
VCDI 0 0 0 0 0 4 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 0 621 10 30 4 0 0 0
OW 0 72 10 39 13 0 0 0
VODI 0 34 11 90 32 0 0 0
ODI 0 4 4 58 75 11 0 0
CDI 0 0 0 39 115 149 3 0
VCDI 0 0 0 3 193 1293 2890 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 554 10 32 8 0 0 0
OW 0 75 2 20 12 0 0 0
VODI 0 65 5 27 32 4 0 0
ODI 0 22 12 45 34 17 0 0
CDI 0 15 5 56 70 97 10 0
VCDI 0 0 1 79 276 1335 2883 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 0 12 0 0 0 0 0 0
OW 0 64 3 17 1 0 0 0
VODI 0 64 18 308 99 24 0 0
ODI 0 2 2 66 487 154 6 0
CDI 0 0 0 0 180 784 158 0
VCDI 0 0 0 0 31 3185 2822 100
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 19 1 2 0 0 0 0
OW 0 54 1 12 5 17 2 0
VODI 0 62 13 127 165 136 39 0
ODI 0 4 1 137 272 290 75 0
CDI 0 3 7 112 275 846 266 0
VCDI 0 0 0 1 81 2858 2604 100

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15288 2919 25 62 0 0 0 0
OW 0 121 24 116 18 0 0 0
VODI 0 21 7 126 153 0 0 0
ODI 0 0 0 31 370 20 0 0
CDI 0 0 0 1 115 368 22 0
VCDI 0 0 0 0 6 341 55 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15288 2909 34 116 17 0 0 0
OW 0 135 17 115 92 0 0 0
VODI 0 17 5 66 195 17 0 0
ODI 0 0 0 37 225 73 0 0
CDI 0 0 0 2 110 456 34 0
VCDI 0 0 0 0 23 183 43 0


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