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: 2023-02-16

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2023-02-20

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 0 302 5 18 2 0 0 0
OW 0 26 0 29 9 0 0 0
VODI 0 36 5 12 33 0 0 0
ODI 0 14 5 27 34 2 0 0
CDI 0 10 2 32 83 47 1 0
VCDI 0 25 8 138 296 1128 5078 29495
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 272 3 13 2 0 0 0
OW 0 44 1 10 4 0 0 0
VODI 0 25 3 25 15 0 0 0
ODI 0 19 3 10 20 0 0 0
CDI 0 14 5 11 25 26 0 0
VCDI 0 39 10 187 391 1151 5079 29495

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 0 339 1386 1408
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 0 339 1386 1408

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 0 54 9928
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 54 9928

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 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 14 874 4766
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 14 874 4766

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 12
VCDI 0 0 0 0 0 9 511 6714
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 15
VCDI 0 0 0 0 0 9 511 6711

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 1 0 0
CDI 0 0 0 0 0 41 32 0
VCDI 0 0 0 0 0 237 3435 1580
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 1 0
CDI 0 0 0 0 0 45 60 0
VCDI 0 0 0 0 0 232 3406 1580

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 144 0 1 0 0 0 0
OW 0 41 1 28 0 0 0 0
VODI 0 99 4 110 0 0 0 0
ODI 0 57 7 148 79 1 0 0
CDI 0 75 7 57 155 57 6 0
VCDI 0 99 10 148 371 1104 3461 61
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 86 0 0 0 0 0 0
OW 0 29 1 8 0 0 0 0
VODI 0 64 2 78 0 0 0 0
ODI 0 81 5 120 18 18 0 0
CDI 0 68 4 82 127 87 13 0
VCDI 0 187 17 204 460 1057 3454 61

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5211 3496 28 61 4 0 0 0
OW 8 94 21 147 3 0 0 0
VODI 0 51 8 213 82 0 0 0
ODI 0 8 2 65 345 15 0 0
CDI 0 9 0 8 271 200 0 0
VCDI 0 6 2 10 216 747 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5173 3368 25 87 2 0 0 0
OW 46 160 20 124 27 0 0 0
VODI 0 66 8 146 131 11 0 0
ODI 0 32 0 79 162 27 0 0
CDI 0 16 4 40 252 152 0 0
VCDI 0 22 4 28 347 772 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 5447 2682 9 46 3 0 0 0
OW 0 100 16 57 12 0 0 0
VODI 0 34 10 156 39 0 0 0
ODI 0 0 0 58 111 1 0 0
CDI 0 0 0 6 181 9 0 0
VCDI 0 0 0 0 123 822 1774 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5445 2610 10 41 3 0 0 0
OW 2 106 6 41 15 0 0 0
VODI 0 66 10 76 38 0 0 0
ODI 0 33 2 69 58 1 0 0
CDI 0 1 7 70 105 10 0 0
VCDI 0 0 0 26 250 821 1774 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 8061 3349 26 87 65 10 0 0
OW 0 117 14 48 12 8 0 0
VODI 0 59 16 48 36 10 0 0
ODI 0 3 17 48 50 3 0 0
CDI 0 0 0 38 87 42 7 0
VCDI 0 0 0 6 111 360 250 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8061 3311 34 107 72 12 0 0
OW 0 102 6 41 17 13 0 0
VODI 0 79 12 28 41 5 0 0
ODI 0 29 11 37 47 11 0 0
CDI 0 7 7 43 60 57 33 0
VCDI 0 0 3 19 124 335 224 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 16 0 0 0
ODI 0 0 0 1 15 2 0 0
CDI 0 0 0 1 15 18 3 0
VCDI 0 0 0 0 94 449 3636 1553
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 5 0 0 0
VODI 0 0 0 0 14 1 0 0
ODI 0 0 0 1 13 7 0 0
CDI 0 0 0 1 21 13 3 0
VCDI 0 0 0 0 87 448 3636 1553

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 0 0 0
CDI 0 0 0 0 0 10 1 0
VCDI 0 0 0 0 0 46 2868 5662
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 53 2869 5662

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10401 4129 69 234 109 0 0 0
OW 1 60 18 176 128 2 0 0
VODI 0 24 4 117 250 13 0 0
ODI 0 7 1 42 316 32 0 0
CDI 0 0 0 0 393 138 0 0
VCDI 0 0 0 0 247 1943 1355 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10402 4099 67 278 183 4 0 0
OW 0 86 15 116 143 5 0 0
VODI 0 27 9 112 207 16 0 0
ODI 0 8 0 43 199 37 0 0
CDI 0 0 1 20 345 143 0 0
VCDI 0 0 0 0 366 1923 1355 0


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