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: 2023-09-28

Model: ARC-MFC PHYS (TOPAZ)

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2023-10-02

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 409 3010 91 109 0 0 0 0
OW 0 721 268 314 15 0 0 0
VODI 0 3 61 637 172 0 0 0
ODI 0 0 0 131 591 71 1 0
CDI 0 0 0 22 409 1910 137 0
VCDI 0 0 0 0 9 1101 13470 13240
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 409 2450 77 110 0 0 0 0
OW 0 1136 206 395 106 55 0 0
VODI 0 135 92 479 354 293 36 0
ODI 0 13 22 141 369 513 151 0
CDI 0 0 23 75 314 1482 1170 17
VCDI 0 0 0 13 53 739 12251 13223

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 1179 611 14 4 2 0 0 0
OW 0 39 20 16 2 0 0 0
VODI 0 2 1 52 17 3 0 0
ODI 0 0 0 5 35 8 2 0
CDI 0 0 0 0 14 64 74 0
VCDI 0 0 0 0 0 88 740 127
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1162 597 15 2 1 0 0 0
OW 17 47 13 19 9 10 4 0
VODI 0 6 7 41 17 22 2 0
ODI 0 2 0 15 29 27 0 0
CDI 0 0 0 0 14 59 227 0
VCDI 0 0 0 0 0 45 583 127

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4164 2322 16 5 0 0 0 0
OW 0 307 171 204 0 0 0 0
VODI 0 8 16 627 99 0 0 0
ODI 0 0 0 61 826 64 0 0
CDI 0 0 0 1 106 697 29 0
VCDI 0 0 0 0 0 99 156 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4164 2207 28 40 0 0 0 0
OW 0 352 107 223 8 0 0 0
VODI 0 75 65 509 175 2 0 0
ODI 0 3 3 106 686 90 0 0
CDI 0 0 0 20 162 710 134 0
VCDI 0 0 0 0 0 58 51 0

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5424 229 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5423 159 0 0 0 0 0 0
OW 1 70 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 0

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5891 870 0 0 0 0 0 0
OW 0 115 26 9 0 0 0 0
VODI 0 0 5 95 5 0 0 0
ODI 0 0 0 16 64 0 0 0
CDI 0 0 0 0 51 72 0 0
VCDI 0 0 0 0 0 5 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5891 899 7 5 0 0 0 0
OW 0 86 24 115 44 0 0 0
VODI 0 0 0 0 75 11 0 0
ODI 0 0 0 0 1 49 0 0
CDI 0 0 0 0 0 17 0 0
VCDI 0 0 0 0 0 0 0 0

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1328 1286 1 1 0 0 0 0
OW 0 150 85 53 0 0 0 0
VODI 0 0 13 225 25 0 0 0
ODI 0 0 0 42 167 1 0 0
CDI 0 0 0 0 152 504 1 0
VCDI 0 0 0 0 0 701 564 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1328 1263 36 21 0 0 0 0
OW 0 171 50 185 20 0 0 0
VODI 0 2 13 107 250 38 0 0
ODI 0 0 0 8 62 244 0 0
CDI 0 0 0 0 12 700 150 0
VCDI 0 0 0 0 0 224 415 0

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3576 2459 9 3 0 0 0 0
OW 0 99 33 32 0 0 0 0
VODI 0 0 5 60 13 0 0 0
ODI 0 0 0 0 25 3 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3576 2286 14 8 0 0 0 0
OW 0 224 24 30 0 0 0 0
VODI 0 48 7 35 14 0 0 0
ODI 0 0 2 22 22 1 0 0
CDI 0 0 0 0 2 2 0 0
VCDI 0 0 0 0 0 0 0 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 10070 1241 0 11 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10070 1241 0 11 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 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 6394 2503 53 167 88 31 0 0
OW 0 71 67 53 39 15 5 0
VODI 0 0 13 144 87 12 16 0
ODI 0 0 0 41 101 19 11 0
CDI 0 0 0 0 73 137 67 0
VCDI 0 0 0 0 0 131 1134 224
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6394 2403 60 199 102 37 6 0
OW 0 144 34 64 88 32 43 0
VODI 0 27 39 87 114 55 170 0
ODI 0 0 0 53 55 102 99 0
CDI 0 0 0 2 29 105 320 23
VCDI 0 0 0 0 0 14 595 201

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12753 232 2 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12753 232 2 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 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 4515 1056 24 21 0 0 0 0
OW 0 0 0 15 2 0 0 0
VODI 0 0 0 14 8 6 0 0
ODI 0 0 0 3 15 10 0 0
CDI 0 0 0 0 19 7 10 0
VCDI 0 0 0 0 0 11 67 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4515 1056 24 30 0 0 0 0
OW 0 0 0 20 12 8 0 0
VODI 0 0 0 3 25 12 0 0
ODI 0 0 0 0 5 0 0 0
CDI 0 0 0 0 2 4 21 0
VCDI 0 0 0 0 0 10 56 0

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8538 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8538 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 0

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15746 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15746 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 0


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