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: 2022-10-13

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-10-17

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 9 1428 13 68 20 0 0 0
OW 0 199 30 182 64 0 0 0
VODI 0 56 8 267 283 7 0 0
ODI 0 22 3 59 356 132 0 0
CDI 0 13 3 61 160 588 32 0
VCDI 0 0 0 12 189 1375 11680 19583
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9 1201 14 64 26 4 0 0
OW 0 340 16 185 163 30 0 0
VODI 0 109 13 202 364 210 0 0
ODI 0 41 8 69 198 243 51 0
CDI 0 25 5 73 84 258 221 0
VCDI 0 2 1 56 237 1357 11440 19583

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 0 512 25 62 0 0 0 0
OW 0 67 4 39 2 0 0 0
VODI 0 7 1 155 63 0 0 0
ODI 0 0 0 26 252 39 0 0
CDI 0 0 0 0 32 297 0 0
VCDI 0 0 0 0 6 387 566 591
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 530 27 145 69 1 0 0
OW 0 44 1 48 112 20 0 0
VODI 0 12 2 76 108 10 0 0
ODI 0 0 0 13 23 24 0 0
CDI 0 0 0 0 32 119 0 0
VCDI 0 0 0 0 11 549 566 591

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 132 2314 18 56 0 0 0 0
OW 11 227 35 147 19 0 0 0
VODI 0 20 6 186 156 24 0 0
ODI 0 0 0 6 359 95 0 0
CDI 0 0 0 0 172 784 47 0
VCDI 0 0 0 0 2 806 3154 1206
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 140 2241 20 83 5 0 0 0
OW 3 244 18 131 45 0 0 0
VODI 0 76 21 155 224 166 0 0
ODI 0 0 0 26 241 329 31 0
CDI 0 0 0 0 146 323 128 0
VCDI 0 0 0 0 47 891 3042 1206

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2384 2878 13 65 20 0 0 0
OW 0 82 21 44 22 0 0 0
VODI 0 2 3 46 20 0 0 0
ODI 0 0 0 1 33 0 0 0
CDI 0 0 0 0 7 11 0 0
VCDI 0 0 0 0 0 2 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2384 2945 32 122 44 0 0 0
OW 0 17 5 28 17 0 0 0
VODI 0 0 0 6 30 0 0 0
ODI 0 0 0 0 9 5 0 0
CDI 0 0 0 0 2 8 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 147 2018 7 13 0 0 0 0
OW 0 368 35 116 7 1 0 0
VODI 0 65 17 432 234 0 0 0
ODI 0 0 0 6 838 121 0 0
CDI 0 0 0 0 123 1624 111 0
VCDI 0 0 0 0 0 286 677 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 113 1748 19 172 209 3 0 0
OW 34 439 22 129 155 77 0 0
VODI 0 263 18 266 602 554 27 0
ODI 0 1 0 0 203 571 83 0
CDI 0 0 0 0 33 596 108 0
VCDI 0 0 0 0 0 231 570 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 0 2059 21 18 0 0 0 0
OW 0 297 29 152 4 0 0 0
VODI 11 29 14 202 146 0 0 0
ODI 12 1 0 31 237 20 0 0
CDI 0 0 0 3 137 323 0 0
VCDI 0 0 0 0 0 496 1080 4
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 2076 24 74 3 0 0 0
OW 0 252 27 155 65 0 0 0
VODI 11 57 13 144 190 1 0 0
ODI 12 1 0 23 130 23 0 0
CDI 0 0 0 10 118 253 0 0
VCDI 0 0 0 0 18 562 1080 4

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4014 2199 8 16 0 0 0 0
OW 1 50 0 26 2 0 0 0
VODI 0 4 1 9 1 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 4015 2205 4 12 0 0 0 0
OW 0 47 3 23 0 0 0 0
VODI 0 1 2 16 3 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

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10272 1054 4 1 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 10272 1054 4 1 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 6882 2567 19 130 192 33 0 0
OW 0 63 7 58 20 14 0 0
VODI 0 13 8 77 45 8 0 0
ODI 0 0 0 49 79 8 0 0
CDI 0 0 0 7 134 111 3 0
VCDI 0 0 0 0 11 389 769 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6882 2563 18 153 206 48 0 0
OW 0 58 9 51 26 4 0 0
VODI 0 19 5 64 50 7 0 0
ODI 0 3 2 39 63 8 0 0
CDI 0 0 0 14 116 89 7 0
VCDI 0 0 0 0 20 407 765 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 12677 311 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 12677 311 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

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3194 1809 23 144 34 0 0 0
OW 0 21 8 58 21 0 0 0
VODI 0 0 3 60 75 1 0 0
ODI 0 0 0 6 98 24 0 0
CDI 0 0 0 0 29 98 0 0
VCDI 0 0 0 0 0 97 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3194 1802 22 153 47 0 0 0
OW 0 28 11 64 25 9 0 0
VODI 0 0 1 51 95 7 0 0
ODI 0 0 0 0 65 22 0 0
CDI 0 0 0 0 25 69 0 0
VCDI 0 0 0 0 0 113 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 6135 2423 12 17 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 6135 2423 12 17 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 19882 312 6 9 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 19882 312 6 9 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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