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: 2022-04-07

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-04-11

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 6 4 24 29 28 6 0
OW 0 3 0 7 8 10 12 0
VODI 0 4 1 7 19 9 15 0
ODI 0 1 0 12 6 10 10 0
CDI 0 0 0 1 4 25 33 0
VCDI 0 0 0 0 81 255 4048 32224
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 8 4 28 33 41 20 0
OW 0 3 1 5 13 10 17 0
VODI 0 3 0 10 13 12 30 0
ODI 0 0 0 8 5 12 29 0
CDI 0 0 0 0 4 13 47 0
VCDI 0 0 0 0 79 249 3981 32224

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 8 109 3016
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 8 109 3016

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 27 9955
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 27 9955

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 3 35 4 1
VCDI 0 0 0 0 6 174 1896 3535
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 2 14 0 1
VCDI 0 0 0 0 7 195 1900 3535

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 2
VCDI 0 0 0 0 0 0 0 7244

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 5 0 0
VCDI 0 0 0 0 0 179 1861 3281
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 4 0
VCDI 0 0 0 0 0 184 1857 3281

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 1 10 0 0 0
OW 0 0 0 8 10 0 0 0
VODI 0 0 0 18 25 0 0 0
ODI 0 0 0 13 16 0 2 0
CDI 0 0 0 15 16 18 17 0
VCDI 0 0 0 7 82 1099 4706 268
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 9 0 0 0
OW 0 0 0 7 10 0 0 0
VODI 0 0 0 8 15 0 0 0
ODI 0 0 0 9 12 0 0 0
CDI 0 0 0 13 15 6 14 0
VCDI 0 0 0 25 98 1111 4711 268

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3066 3462 42 227 117 4 0 0
OW 0 139 19 176 82 13 0 0
VODI 0 71 15 162 206 27 0 0
ODI 0 9 4 98 307 48 2 0
CDI 0 0 0 7 362 274 4 0
VCDI 0 0 0 0 165 696 1527 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3066 3281 24 198 131 9 0 0
OW 0 250 17 79 75 24 0 0
VODI 0 106 27 187 127 30 2 0
ODI 0 41 9 149 240 53 8 0
CDI 0 3 3 43 368 218 12 0
VCDI 0 0 0 14 298 728 1511 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 4563 3516 17 115 4 0 0 0
OW 0 63 4 84 17 0 0 0
VODI 0 50 9 79 58 0 0 0
ODI 0 9 7 56 102 2 0 0
CDI 0 0 0 37 232 139 11 0
VCDI 0 0 0 0 34 624 1789 75
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4563 3441 15 81 1 0 0 0
OW 0 116 4 72 9 0 0 0
VODI 0 66 14 99 29 0 0 0
ODI 0 15 4 77 62 0 0 0
CDI 0 0 0 36 215 38 16 0
VCDI 0 0 0 6 131 727 1784 75

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8226 3226 35 128 125 42 0 0
OW 0 109 15 51 21 3 0 0
VODI 0 39 20 58 58 4 0 0
ODI 0 2 7 52 66 17 0 0
CDI 0 0 0 19 122 197 35 0
VCDI 0 0 0 0 13 76 222 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8226 3191 38 143 146 42 0 0
OW 0 91 10 40 23 5 0 0
VODI 0 65 11 33 50 21 0 0
ODI 0 26 10 30 51 34 6 0
CDI 0 3 8 58 92 122 97 0
VCDI 0 0 0 4 43 115 154 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 0 0 0 0 0
OW 0 0 0 3 1 0 0 0
VODI 0 0 0 3 5 0 0 0
ODI 0 0 0 0 10 0 0 0
CDI 0 0 0 0 45 25 4 0
VCDI 0 0 0 0 7 295 2232 3173
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 3 3 0 0 0
CDI 0 0 0 3 19 1 4 0
VCDI 0 0 0 0 46 319 2232 3173

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 1 0 8 0 0
CDI 0 0 0 2 12 59 96 29
VCDI 0 0 0 2 41 636 4896 2805
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 6 0 0
CDI 0 0 0 2 2 62 132 0
VCDI 0 0 0 3 51 635 4860 2834

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11421 3990 34 179 48 2 0 0
OW 0 138 24 185 158 0 0 0
VODI 0 42 5 111 330 13 0 0
ODI 0 0 0 17 493 254 0 0
CDI 0 0 0 10 423 614 91 0
VCDI 0 0 0 2 73 525 1027 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11421 4045 47 324 187 2 0 0
OW 0 64 7 80 201 10 0 0
VODI 0 57 4 23 276 138 0 0
ODI 0 4 5 26 171 356 12 0
CDI 0 0 0 44 378 277 139 0
VCDI 0 0 0 7 312 625 967 0


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