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: 2024-02-08

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date:

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 59 23 20 1 0 0 0
OW 0 10 7 12 8 0 0 0
VODI 0 5 3 29 15 1 0 0
ODI 0 9 1 27 44 4 0 0
CDI 0 7 3 12 143 143 19 0
VCDI 0 2 7 33 186 993 3884 31192
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 59 26 28 8 0 0 0
OW 0 2 4 16 11 2 0 0
VODI 0 4 1 12 23 7 0 0
ODI 0 4 1 5 17 17 0 0
CDI 0 3 2 16 45 31 11 1
VCDI 0 20 10 56 293 1084 3892 31191

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 0 32 3101
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 32 3101

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 0 291 9691
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 0 291 9691

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 8 1 0
VCDI 0 0 0 0 0 103 1800 3742
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 0 0
VCDI 0 0 0 0 0 103 1801 3742

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 48 594 4684
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 48 594 4684

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 44 16 35 7 0 0 0
OW 0 26 3 17 2 0 0 0
VODI 0 75 22 39 1 0 0 0
ODI 0 0 4 46 0 0 0 0
CDI 0 0 0 46 39 9 10 0
VCDI 0 0 0 4 155 1267 4228 236
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 3 9 29 5 0 0 0
OW 0 15 2 7 4 0 0 0
VODI 0 20 2 7 1 0 0 0
ODI 0 16 4 11 0 0 0 0
CDI 0 51 8 32 3 18 25 0
VCDI 0 40 20 101 191 1258 4213 236

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3023 4242 176 265 54 3 0 0
OW 0 222 121 151 43 7 0 0
VODI 0 76 41 277 78 14 0 0
ODI 0 0 9 112 192 25 1 0
CDI 0 0 0 83 227 183 14 0
VCDI 0 0 0 73 270 693 656 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3023 4060 189 318 104 16 0 0
OW 0 179 61 102 48 25 0 0
VODI 0 146 15 173 75 40 0 0
ODI 0 81 22 63 131 41 4 0
CDI 0 41 33 53 185 202 44 0
VCDI 0 33 27 252 321 601 623 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 3086 4251 213 302 29 0 0 0
OW 0 88 55 200 21 1 0 0
VODI 0 36 28 133 28 3 0 0
ODI 0 24 12 112 63 7 0 0
CDI 0 11 9 78 186 187 6 0
VCDI 0 0 0 21 95 691 1520 200
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3086 4114 178 305 32 1 0 0
OW 0 55 46 78 20 2 0 0
VODI 0 77 21 133 29 3 0 0
ODI 0 61 11 87 39 4 1 0
CDI 0 64 31 68 90 27 2 0
VCDI 0 39 30 175 212 852 1523 200

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7278 3378 166 208 157 44 4 0
OW 0 4 29 132 36 6 3 0
VODI 0 0 0 92 75 18 5 0
ODI 0 0 0 13 120 14 1 0
CDI 0 0 0 0 87 273 0 0
VCDI 0 0 0 0 4 382 459 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7278 3382 167 218 166 49 5 0
OW 0 0 24 134 30 14 4 0
VODI 0 0 4 69 78 19 3 0
ODI 0 0 0 22 97 26 1 0
CDI 0 0 0 2 89 180 6 0
VCDI 0 0 0 0 19 449 453 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 1 3 3 0 0 0 0
OW 0 0 4 9 0 0 0 0
VODI 0 0 0 20 5 0 0 0
ODI 0 0 0 16 26 0 0 0
CDI 0 0 0 8 36 36 1 0
VCDI 0 0 0 9 50 434 3041 2101
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 3 3 0 0 0 0
OW 0 1 3 6 0 0 0 0
VODI 0 0 1 13 2 0 0 0
ODI 0 0 0 9 13 0 0 0
CDI 0 0 0 12 34 3 0 0
VCDI 0 0 0 22 68 467 3042 2101

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 1 3 0
VCDI 0 0 0 0 0 469 3427 4687
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 9 0
VCDI 0 0 0 0 0 467 3421 4687

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10161 5409 200 259 33 0 0 0
OW 21 22 34 277 63 0 0 0
VODI 0 0 0 149 249 15 0 0
ODI 0 0 0 15 380 121 0 0
CDI 0 0 0 0 156 458 0 0
VCDI 0 0 0 0 88 1244 855 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10181 5410 192 372 65 0 0 0
OW 1 21 24 168 118 4 0 0
VODI 0 0 18 82 197 67 0 0
ODI 0 0 0 50 209 102 0 0
CDI 0 0 0 28 225 273 0 0
VCDI 0 0 0 0 155 1392 855 0


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