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: 2022-02-03

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-02-07

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 0 185 6 48 22 0 0 0
OW 0 7 1 17 30 6 0 0
VODI 0 3 1 12 36 14 0 0
ODI 0 1 0 7 25 29 0 0
CDI 0 0 0 16 78 75 12 0
VCDI 0 0 0 64 479 420 5694 29614
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 179 6 55 44 3 0 0
OW 0 11 1 11 27 17 0 0
VODI 0 3 1 6 25 26 0 0
ODI 0 2 0 7 15 31 2 0
CDI 0 1 0 8 8 49 19 0
VCDI 0 0 0 77 551 418 5685 29614

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 13 792 2328
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 13 792 2328

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 1 0 0
VCDI 0 0 0 0 0 53 935 4665
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 53 935 4665

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 4
VCDI 0 0 0 0 0 0 0 7242
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 12 421 4893
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 12 421 4893

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 96 2 3 0 0 0 0
OW 0 48 0 2 0 0 0 0
VODI 0 58 0 1 0 0 0 0
ODI 0 43 2 31 1 0 0 0
CDI 0 117 6 33 25 20 16 0
VCDI 0 171 11 89 193 463 4190 710
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 29 2 2 0 0 0 0
OW 0 37 0 3 0 0 0 0
VODI 0 44 0 0 0 0 0 0
ODI 0 37 0 1 0 0 0 0
CDI 0 45 1 8 3 24 17 0
VCDI 0 341 18 145 216 459 4189 710

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3194 3877 40 149 17 0 0 0
OW 0 225 21 164 36 0 0 0
VODI 0 107 17 187 106 1 0 0
ODI 0 41 5 81 185 20 0 0
CDI 0 21 4 32 212 155 6 0
VCDI 0 3 1 16 152 1083 1173 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3194 3850 40 128 11 0 0 0
OW 0 197 16 144 40 0 0 0
VODI 0 117 19 155 104 1 0 0
ODI 0 56 4 109 149 14 0 0
CDI 0 34 5 50 186 116 1 0
VCDI 0 20 4 43 218 1128 1178 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 5149 3404 16 75 15 0 0 0
OW 0 125 7 28 20 0 0 0
VODI 0 92 5 56 29 0 0 0
ODI 0 51 6 46 55 4 0 0
CDI 0 19 13 49 83 40 0 0
VCDI 0 0 0 32 181 515 1573 8
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5149 3186 18 75 13 0 0 0
OW 0 142 3 41 17 0 0 0
VODI 0 131 6 28 46 0 0 0
ODI 0 90 0 22 42 6 0 0
CDI 0 97 5 25 37 29 0 0
VCDI 0 45 15 95 228 524 1573 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 8200 3046 27 131 64 2 0 0
OW 0 97 9 28 36 6 0 0
VODI 0 81 1 41 45 9 0 0
ODI 0 53 12 11 53 10 0 0
CDI 0 36 9 53 45 72 11 0
VCDI 0 4 1 47 142 362 244 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8200 2988 31 146 76 5 0 0
OW 0 90 5 39 52 17 0 0
VODI 0 82 2 12 53 12 0 0
ODI 0 54 3 12 31 21 0 0
CDI 0 50 11 18 32 47 7 0
VCDI 0 53 7 84 141 359 248 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 60 9 53 40 0 0 0
OW 0 8 2 17 35 6 0 0
VODI 0 3 1 14 34 16 0 0
ODI 0 0 1 9 36 33 0 0
CDI 0 0 0 3 27 56 0 0
VCDI 0 0 0 0 78 540 2945 1777
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 46 8 45 34 0 0 0
OW 0 14 1 11 37 8 0 0
VODI 0 9 2 18 34 22 0 0
ODI 0 2 2 13 31 28 0 0
CDI 0 0 0 7 26 45 0 0
VCDI 0 0 0 2 88 548 2945 1777

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 23 24 7
VCDI 0 0 0 0 1 1179 3346 4007
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 33 31 29
VCDI 0 0 0 0 1 1169 3339 3985

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9915 4412 66 410 181 7 0 0
OW 0 28 11 160 156 12 0 0
VODI 0 0 0 54 246 30 0 0
ODI 0 0 0 2 212 76 0 0
CDI 0 0 0 0 329 185 0 0
VCDI 0 0 0 0 404 2588 725 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9915 4387 66 431 254 20 0 0
OW 0 45 10 128 163 32 0 0
VODI 0 8 1 53 213 46 0 0
ODI 0 0 0 14 180 67 0 0
CDI 0 0 0 0 288 190 0 0
VCDI 0 0 0 0 430 2543 725 0


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