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: 2022-03-24

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-03-28

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 0 0 16 43 67 21 0
OW 0 0 0 0 10 16 33 0
VODI 0 0 0 0 8 11 32 0
ODI 0 0 0 5 28 10 31 0
CDI 0 0 0 14 104 26 74 0
VCDI 0 43 12 131 321 428 4243 31175
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 16 50 78 54 0
OW 0 0 0 0 11 13 42 0
VODI 0 0 0 0 3 15 52 0
ODI 0 0 0 0 0 7 50 0
CDI 0 0 0 0 5 14 64 0
VCDI 0 43 12 150 445 431 4172 31175

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 38 564 2531
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 38 564 2531

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 3 4 16
VCDI 0 0 0 0 0 144 1638 8177
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 7 16 100
VCDI 0 0 0 0 0 140 1626 8093

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 7 0 0 0
VCDI 0 0 0 0 63 226 1805 3553
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 10 0 0 0
VCDI 0 0 0 0 60 226 1805 3553

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 9
VCDI 0 0 0 0 0 0 0 7237
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 9
VCDI 0 0 0 0 0 0 0 7237

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 4
VCDI 0 0 0 0 0 0 11 5311
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 11 5311

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 18 4 65 8 0 0 0
OW 0 16 1 17 4 0 0 0
VODI 0 24 0 10 3 0 0 0
ODI 0 15 1 4 4 0 2 0
CDI 0 12 0 3 3 43 57 2
VCDI 0 34 6 53 94 335 4617 876
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 3 0 57 8 0 0 0
OW 0 17 3 11 4 0 0 0
VODI 0 21 2 9 3 0 0 0
ODI 0 19 0 6 3 0 5 0
CDI 0 31 1 21 2 32 67 0
VCDI 0 28 6 48 96 346 4604 878

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3078 3628 50 167 52 0 0 0
OW 0 154 29 170 64 12 0 0
VODI 0 86 17 217 187 30 0 0
ODI 0 40 4 118 329 91 0 0
CDI 0 7 0 19 151 333 7 0
VCDI 0 23 5 22 158 1124 959 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3078 3490 51 216 109 8 0 0
OW 0 183 26 131 98 27 0 0
VODI 0 113 10 148 131 70 0 0
ODI 0 105 9 107 174 89 0 0
CDI 0 24 4 66 223 293 7 0
VCDI 0 23 5 45 206 1103 959 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 4935 3373 10 41 1 0 0 0
OW 0 107 12 43 14 0 0 0
VODI 0 44 11 109 32 0 0 0
ODI 0 12 6 48 74 5 0 0
CDI 0 0 1 45 128 54 7 0
VCDI 0 0 0 6 142 839 1597 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4935 3341 7 34 6 0 0 0
OW 0 122 12 41 11 0 0 0
VODI 0 61 10 90 41 0 0 0
ODI 0 12 10 66 48 10 0 0
CDI 0 0 1 52 116 46 8 0
VCDI 0 0 0 9 169 842 1596 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 8499 3137 28 122 84 3 0 0
OW 0 135 19 58 39 2 0 0
VODI 0 51 12 54 62 3 0 0
ODI 0 0 3 44 78 13 0 0
CDI 0 0 0 9 113 191 28 0
VCDI 0 0 0 0 16 87 98 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8499 3127 34 146 104 3 0 0
OW 0 92 9 36 49 1 0 0
VODI 0 54 9 34 66 18 0 0
ODI 0 35 3 18 49 40 8 0
CDI 0 15 7 45 79 142 25 0
VCDI 0 0 0 8 45 95 93 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 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 2 0 0
VCDI 0 0 0 0 22 362 2443 2971
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 4 0 0
VCDI 0 0 0 0 23 360 2443 2971

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 9 0 0
CDI 0 0 0 0 0 100 17 0
VCDI 0 0 0 0 37 1320 4507 2597
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 10 0 0
CDI 0 0 0 0 0 97 19 0
VCDI 0 0 0 0 37 1322 4505 2597

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9250 4514 45 315 148 0 0 0
OW 0 264 11 215 161 27 0 0
VODI 0 50 10 267 331 71 0 0
ODI 0 0 0 7 397 245 61 0
CDI 0 0 0 0 354 649 191 0
VCDI 0 0 0 0 273 921 1432 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9250 4706 54 472 332 57 0 0
OW 0 83 4 124 173 89 0 0
VODI 0 33 5 137 237 145 32 0
ODI 0 6 3 47 207 178 111 0
CDI 0 0 0 24 235 245 107 0
VCDI 0 0 0 0 480 1199 1434 0


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