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: 2024-02-29

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 0 130 12 1 0 0 0 0
OW 0 6 19 17 0 0 0 0
VODI 0 1 12 41 13 0 0 0
ODI 0 0 0 36 21 8 0 0
CDI 0 0 0 17 33 64 0 0
VCDI 0 0 0 58 134 632 4821 30826
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 105 12 4 0 0 0 0
OW 0 22 10 17 0 0 0 0
VODI 0 5 6 26 12 1 0 0
ODI 0 3 7 19 20 7 0 0
CDI 0 2 5 21 29 38 11 0
VCDI 0 0 3 83 140 658 4810 30826

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 26 3107
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 26 3107

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 0 9982
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 6 6 23
VCDI 0 0 0 0 0 19 885 4715
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 10
CDI 0 0 0 0 0 8 10 44
VCDI 0 0 0 0 0 17 881 4684

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 7
VCDI 0 0 0 0 0 0 0 7239
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 0 0 7234

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 34
VCDI 0 0 0 0 0 53 810 4429
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 64
VCDI 0 0 0 0 0 53 810 4399

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 150 6 0 0 0 0 0
OW 0 20 8 1 0 0 0 0
VODI 0 22 14 25 15 0 0 0
ODI 0 9 14 21 70 8 0 0
CDI 0 0 6 68 90 133 37 0
VCDI 0 0 0 50 137 997 4430 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 88 0 0 0 0 0 0
OW 0 21 1 0 0 0 0 0
VODI 0 24 1 0 0 0 0 0
ODI 0 27 1 4 18 1 0 0
CDI 0 23 21 10 43 79 31 0
VCDI 0 18 24 151 251 1058 4436 0

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3323 4171 164 150 9 0 0 0
OW 0 100 75 237 34 0 0 0
VODI 0 36 20 282 201 2 0 0
ODI 0 1 4 62 352 62 0 0
CDI 0 0 0 28 171 332 36 0
VCDI 0 0 0 0 40 488 951 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3323 4004 137 191 21 0 0 0
OW 0 150 57 170 98 0 0 0
VODI 0 90 30 193 166 12 0 0
ODI 0 43 15 102 182 43 2 0
CDI 0 21 23 57 202 167 50 0
VCDI 0 0 1 46 138 662 935 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 4434 3355 113 58 10 0 0 0
OW 0 33 42 94 9 1 0 0
VODI 0 12 26 123 28 4 0 0
ODI 0 0 12 74 50 17 0 0
CDI 0 0 0 148 181 86 0 0
VCDI 0 0 0 4 219 1252 1311 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4434 3071 69 56 12 0 0 0
OW 0 160 34 49 8 1 0 0
VODI 0 127 39 83 20 7 0 0
ODI 0 35 26 64 41 11 0 0
CDI 0 7 25 82 56 47 0 0
VCDI 0 0 0 167 360 1294 1311 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 7158 3323 167 229 200 72 0 0
OW 0 16 30 130 34 8 0 0
VODI 0 0 4 82 104 20 0 0
ODI 0 0 0 24 117 36 0 0
CDI 0 0 0 4 90 349 31 0
VCDI 0 0 0 0 11 449 300 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7158 3283 165 305 221 79 0 0
OW 0 37 14 73 72 15 0 0
VODI 0 18 17 34 96 42 0 0
ODI 0 1 5 24 64 61 5 0
CDI 0 0 0 31 38 171 21 0
VCDI 0 0 0 2 65 566 305 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 20 6 0 0 0 0 0
OW 0 0 3 11 1 0 0 0
VODI 0 0 3 30 18 0 0 0
ODI 0 0 1 21 32 3 0 0
CDI 0 0 0 10 24 22 4 0
VCDI 0 0 0 0 138 365 2862 2229
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 2 0 0 0 0 0 0
OW 0 13 4 0 0 0 0 0
VODI 0 5 4 33 20 0 0 0
ODI 0 0 4 17 22 1 0 0
CDI 0 0 1 13 27 24 2 0
VCDI 0 0 0 9 144 365 2864 2229

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 0 0
VCDI 0 0 0 0 0 489 4797 3300
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 0 490 4797 3300

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8458 5636 267 709 166 4 0 0
OW 0 140 48 221 183 8 0 0
VODI 0 3 2 189 354 42 0 0
ODI 0 0 0 6 466 106 0 0
CDI 0 0 0 1 269 473 4 0
VCDI 0 0 0 0 140 1449 865 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8458 5737 287 813 266 13 0 0
OW 0 33 27 179 195 38 0 0
VODI 0 7 2 119 360 73 0 0
ODI 0 2 1 8 373 102 0 0
CDI 0 0 0 5 228 344 3 0
VCDI 0 0 0 2 156 1512 866 0


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