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: 2022-08-04

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-08-08

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 86 1781 8 8 0 0 0 0
OW 0 317 38 118 3 0 0 0
VODI 0 184 28 568 219 0 0 0
ODI 0 7 1 179 4811 264 0 0
CDI 0 0 0 0 1934 14274 1608 0
VCDI 0 0 0 0 0 973 5863 3630
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 86 1821 14 34 1 0 0 0
OW 0 179 31 159 21 0 0 0
VODI 0 178 13 344 336 0 0 0
ODI 0 107 12 269 3058 1340 61 0
CDI 0 4 5 67 3551 12908 1566 78
VCDI 0 0 0 0 0 1263 5844 3552

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 292 374 15 84 1 0 0 0
OW 0 20 4 104 20 0 0 0
VODI 0 13 2 156 166 0 0 0
ODI 0 1 0 36 725 8 0 0
CDI 0 0 0 0 51 343 108 0
VCDI 0 2 2 1 18 76 491 20
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 292 315 9 119 26 0 0 0
OW 0 16 3 57 61 0 0 0
VODI 0 34 3 101 211 0 0 0
ODI 0 43 6 80 395 7 0 0
CDI 0 0 0 23 271 325 267 6
VCDI 0 2 2 1 17 95 332 14

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 92 1652 40 98 0 0 0 0
OW 0 49 16 247 3 0 0 0
VODI 0 37 6 704 159 0 0 0
ODI 0 4 2 184 2131 38 0 0
CDI 0 0 0 0 1967 2229 3 0
VCDI 0 0 0 0 0 223 98 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 92 1629 34 110 6 0 0 0
OW 0 65 18 245 21 0 0 0
VODI 0 12 7 576 244 3 0 0
ODI 0 26 2 189 812 177 0 0
CDI 0 10 3 113 3143 1696 4 0
VCDI 0 0 0 0 34 614 97 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 2108 2447 11 28 0 0 0 0
OW 0 405 31 91 0 0 0 0
VODI 0 26 15 245 34 0 0 0
ODI 0 0 0 15 187 8 0 0
CDI 0 0 0 0 0 3 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 2108 2535 18 43 0 0 0 0
OW 0 235 28 131 2 0 0 0
VODI 0 108 11 193 87 10 0 0
ODI 0 0 0 12 132 1 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 396 2174 22 65 8 0 0 0
OW 0 189 32 180 23 0 0 0
VODI 0 22 12 347 199 0 0 0
ODI 0 0 0 16 2552 134 0 0
CDI 0 0 0 0 136 739 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 396 2050 23 108 105 0 0 0
OW 0 261 29 276 159 19 0 0
VODI 0 71 12 167 810 91 0 0
ODI 0 3 2 57 1760 520 0 0
CDI 0 0 0 0 84 243 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 1224 2258 15 35 0 0 0 0
OW 0 33 25 81 3 0 0 0
VODI 0 0 2 134 91 0 0 0
ODI 0 0 0 19 681 69 0 0
CDI 0 0 0 0 82 574 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 1223 2252 15 68 11 0 0 0
OW 1 35 25 54 41 0 0 0
VODI 0 4 2 72 137 0 0 0
ODI 0 0 0 62 451 70 0 0
CDI 0 0 0 13 217 573 0 0
VCDI 0 0 0 0 0 0 0 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 4288 1741 4 4 0 0 0 0
OW 0 47 14 24 5 0 0 0
VODI 0 3 2 62 23 0 0 0
ODI 0 0 0 11 86 1 0 0
CDI 0 0 0 0 16 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 4288 1722 5 5 1 0 0 0
OW 0 45 11 28 9 0 0 0
VODI 0 22 3 48 48 1 0 0
ODI 0 2 1 20 58 0 0 0
CDI 0 0 0 0 14 0 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 11315 16 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 11315 16 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

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8423 1867 16 155 0 0 0 0
OW 0 49 4 66 14 0 0 0
VODI 0 10 1 191 119 4 0 0
ODI 0 0 0 68 289 34 0 0
CDI 0 0 0 4 201 181 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 8423 1877 17 188 6 0 0 0
OW 0 38 3 66 58 0 0 0
VODI 0 11 1 126 163 26 0 0
ODI 0 0 0 71 117 52 0 0
CDI 0 0 0 33 279 141 0 0
VCDI 0 0 0 0 0 0 0 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 12508 479 1 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 12508 479 1 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 2100 3202 34 155 8 0 0 0
OW 0 45 9 153 1 0 0 0
VODI 0 0 0 88 3 0 0 0
ODI 0 0 0 4 1 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 2100 3152 38 187 9 0 0 0
OW 0 79 5 182 0 0 0 0
VODI 0 16 0 21 0 0 0 0
ODI 0 0 0 10 4 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 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 7870 684 3 30 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 7870 684 3 30 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 19651 519 2 37 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 19651 519 2 37 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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