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: 2023-01-05

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2023-01-09

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 0 155 0 0 0 0 0 0
OW 0 41 4 11 0 0 0 0
VODI 0 34 1 23 1 0 0 0
ODI 0 25 3 32 18 0 0 0
CDI 0 15 6 60 76 12 0 0
VCDI 0 0 0 33 203 898 3685 31566
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 41 0 0 0 0 0 0
OW 0 40 0 0 0 0 0 0
VODI 0 50 0 0 0 0 0 0
ODI 0 48 2 11 0 0 0 0
CDI 0 54 7 47 12 0 0 0
VCDI 0 37 5 101 286 910 3685 31566

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 1 0 0
VCDI 0 0 0 0 0 123 369 2640
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 0 124 369 2640

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 7 9 4
VCDI 0 0 0 0 0 129 1978 7855
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 5 10 1
VCDI 0 0 0 0 0 131 1977 7858

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 0 232 1918 3504
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 0 232 1918 3504

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 0 7246
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 0 7246

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 0
VCDI 0 0 0 0 0 0 0 5326
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 0 5326

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 75 1 5 0 0 0 0
OW 0 6 1 8 0 0 0 0
VODI 0 12 1 10 2 0 0 0
ODI 0 1 1 16 33 22 0 0
CDI 0 0 0 47 130 260 13 3
VCDI 0 0 0 21 73 479 3224 1887
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 41 0 0 0 0 0 0
OW 0 22 0 0 0 0 0 0
VODI 0 17 2 5 0 12 0 0
ODI 0 9 1 9 2 44 38 0
CDI 0 5 1 18 54 77 55 11
VCDI 0 0 0 75 182 628 3144 1879

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5825 3125 14 33 0 0 0 0
OW 0 255 31 150 1 0 0 0
VODI 0 121 24 410 106 0 0 0
ODI 0 29 0 95 302 0 0 0
CDI 0 2 0 37 143 40 1 0
VCDI 0 0 0 8 147 216 216 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5825 2944 16 68 1 0 0 0
OW 0 286 19 137 45 0 0 0
VODI 0 152 13 211 84 0 0 0
ODI 0 100 10 90 71 0 0 0
CDI 0 50 10 138 86 2 0 0
VCDI 0 0 1 89 412 254 217 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 6213 2256 6 17 0 0 0 0
OW 0 102 8 45 1 0 0 0
VODI 0 81 6 74 20 0 0 0
ODI 0 44 2 59 32 0 0 0
CDI 0 59 4 87 199 59 1 0
VCDI 0 53 7 36 305 618 1206 96
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6213 2125 4 9 0 0 0 0
OW 0 126 4 25 0 0 0 0
VODI 0 93 9 53 4 0 0 0
ODI 0 56 4 64 18 0 0 0
CDI 0 60 1 73 140 29 0 0
VCDI 0 135 11 94 395 648 1207 96

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8243 3207 34 132 133 99 11 0
OW 0 42 12 41 49 15 13 0
VODI 0 15 6 38 46 29 12 0
ODI 0 1 3 29 21 37 17 0
CDI 0 0 0 40 45 108 26 0
VCDI 0 0 0 5 78 129 272 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8243 3147 39 157 199 121 36 0
OW 0 47 4 22 20 37 11 0
VODI 0 46 1 11 24 77 50 0
ODI 0 20 5 11 12 72 74 0
CDI 0 5 6 33 3 55 93 0
VCDI 0 0 0 51 114 55 87 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 0 296 4 33 11 0 0 0
OW 0 38 5 15 10 0 0 0
VODI 0 27 5 28 25 0 0 0
ODI 0 9 1 25 26 4 0 0
CDI 0 0 0 13 40 13 0 0
VCDI 0 0 0 0 159 428 2466 2122
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 289 4 32 16 0 0 0
OW 0 40 5 13 15 0 0 0
VODI 0 25 5 19 16 3 0 0
ODI 0 16 1 26 20 4 0 0
CDI 0 0 0 20 33 14 0 0
VCDI 0 0 0 4 171 424 2466 2122

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 8 3 0
VCDI 0 0 0 0 7 327 2581 5661
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 1 0
CDI 0 0 0 0 0 22 36 13
VCDI 0 0 0 0 7 313 2547 5648

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14303 3527 24 24 0 0 0 0
OW 0 142 17 72 2 0 0 0
VODI 0 75 15 62 30 0 0 0
ODI 0 38 4 41 53 0 0 0
CDI 0 28 4 53 94 82 0 0
VCDI 0 12 1 25 146 813 522 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14303 3168 13 10 0 0 0 0
OW 0 394 26 47 5 0 0 0
VODI 0 127 14 87 24 0 0 0
ODI 0 60 6 42 44 37 0 0
CDI 0 40 2 46 72 109 3 0
VCDI 0 33 4 45 180 749 519 0


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