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: 2021-03-18

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-03-22

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 0 204 11 34 7 0 0 0
OW 0 26 5 36 16 1 0 0
VODI 0 10 2 34 35 3 0 0
ODI 0 0 3 22 45 8 0 0
CDI 0 2 0 26 76 16 1 0
VCDI 0 10 1 71 311 711 4857 30318
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 202 11 34 19 0 0 0
OW 0 20 5 23 18 4 0 0
VODI 0 13 2 28 25 10 0 0
ODI 0 5 1 19 30 9 1 0
CDI 0 1 2 34 39 12 6 0
VCDI 0 11 1 85 359 704 4851 30318

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 55 666 2412
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 55 666 2412

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 6
VCDI 0 0 0 0 0 0 0 9976
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 9982

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 0 0 5654
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 5654

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 22
VCDI 0 0 0 0 0 0 0 7224
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 32
VCDI 0 0 0 0 0 0 0 7214

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 0 0 5324
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 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 4 11 0 17
VCDI 0 3 3 46 183 232 2649 3183
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 3 0 0 26
VCDI 0 3 3 46 184 243 2649 3174

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2582 3697 52 90 14 0 0 0
OW 0 146 11 117 27 0 0 0
VODI 0 139 15 126 108 4 0 0
ODI 0 71 7 81 172 23 0 0
CDI 0 58 3 48 337 229 10 4
VCDI 0 60 10 109 438 943 1465 135
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2582 3563 28 61 14 0 0 0
OW 0 224 26 77 29 0 0 0
VODI 0 158 20 154 63 7 0 0
ODI 0 69 8 112 142 20 0 0
CDI 0 61 5 40 315 156 52 9
VCDI 0 96 11 127 533 1016 1423 130

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4938 3221 11 58 0 0 0 0
OW 0 133 10 64 13 0 0 0
VODI 0 59 15 115 70 0 0 0
ODI 0 0 2 81 93 8 0 0
CDI 0 0 0 30 139 79 0 0
VCDI 0 0 0 0 154 1029 1366 8
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4938 3042 9 36 1 0 0 0
OW 0 145 8 62 10 0 0 0
VODI 0 122 6 61 26 0 0 0
ODI 0 61 6 34 49 0 0 0
CDI 0 35 7 64 89 16 0 0
VCDI 0 8 2 91 294 1100 1366 8

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7786 3334 46 179 172 11 0 0
OW 0 118 18 77 47 4 0 0
VODI 0 14 13 86 105 7 0 0
ODI 0 0 0 29 133 25 0 0
CDI 0 0 0 1 155 246 52 0
VCDI 0 0 0 0 12 218 100 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7786 3398 55 185 182 11 0 0
OW 0 56 13 80 45 4 0 0
VODI 0 12 9 80 91 19 0 0
ODI 0 0 0 22 106 31 0 0
CDI 0 0 0 5 169 161 77 0
VCDI 0 0 0 0 31 285 75 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 3 0 0 0 0
OW 0 0 0 6 0 0 0 0
VODI 0 0 0 7 6 0 0 0
ODI 0 0 0 3 17 0 0 0
CDI 0 0 0 2 42 6 0 0
VCDI 0 0 0 0 99 535 2308 2769
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 2 0 0 0 0
OW 0 0 0 6 0 0 0 0
VODI 0 0 0 7 2 0 0 0
ODI 0 0 0 3 12 0 0 0
CDI 0 0 0 3 23 3 0 0
VCDI 0 0 0 0 127 538 2308 2769

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 10 25 5 0
VCDI 0 0 0 0 12 401 4951 3183
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 16 17 5
VCDI 0 0 0 0 22 410 4939 3178

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10900 4552 64 240 9 0 0 0
OW 0 57 23 292 78 2 0 0
VODI 0 2 5 167 345 17 0 0
ODI 0 0 0 13 465 82 0 0
CDI 0 0 0 0 277 392 4 0
VCDI 0 0 0 0 106 1026 1091 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10900 4507 61 273 72 0 0 0
OW 0 84 24 226 113 9 0 0
VODI 0 20 7 187 331 34 0 0
ODI 0 0 0 23 428 114 0 0
CDI 0 0 0 3 222 338 1 0
VCDI 0 0 0 0 114 1024 1094 0


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