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: 2024-01-11

Model: ARC-MFC PHYS (TOPAZ)

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2024-01-15

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 0 0 0 0 0
OW 0 8 8 2 0 0 0 0
VODI 0 2 1 25 0 0 0 0
ODI 0 0 0 18 8 0 0 0
CDI 0 0 0 6 79 47 3 0
VCDI 0 0 0 0 9 245 5963 30478
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 3 4 0 0 0 0 0
VODI 0 7 5 12 0 0 0 0
ODI 0 0 0 17 1 0 0 0
CDI 0 0 0 22 61 23 16 0
VCDI 0 0 0 0 34 269 5950 30478

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 76 370 2673
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 76 370 2673

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 1 0 0 0
CDI 0 0 0 23 13 21 0 1
VCDI 0 0 0 64 321 976 2899 5659
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 2 2 0 0
CDI 0 0 0 5 9 24 0 0
VCDI 0 0 0 82 324 971 2899 5660

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 53 972 2530 2097
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 8 0 0
VCDI 0 0 0 0 53 965 2530 2097

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 1
VCDI 0 0 0 0 0 0 0 7223
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 7224

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 3
VCDI 0 0 0 0 0 0 0 5296
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 3
VCDI 0 0 0 0 0 0 0 5296

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 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 54 7 0 0 0
ODI 0 0 0 9 25 0 0 0
CDI 0 0 0 0 25 51 2 0
VCDI 0 0 0 0 0 111 3799 2234
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 4 0 0 0 0
VODI 0 0 0 41 0 0 0 0
ODI 0 0 0 17 13 0 0 0
CDI 0 0 0 1 43 30 1 1
VCDI 0 0 0 0 1 132 3800 2233

Barents Sea:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 2942 3451 43 28 0 0 0 0
OW 0 397 204 141 20 0 0 0
VODI 0 26 40 482 80 0 0 0
ODI 0 2 0 100 311 25 0 0
CDI 0 0 0 3 291 444 17 0
VCDI 0 0 0 0 44 829 1402 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 2942 3301 36 20 0 0 0 0
OW 0 398 158 138 33 0 0 0
VODI 0 164 84 378 63 0 0 0
ODI 0 13 8 194 217 39 0 0
CDI 0 0 1 23 336 276 84 0
VCDI 0 0 0 1 97 983 1335 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 4080 3016 10 0 0 0 0 0
OW 0 247 148 154 0 0 0 0
VODI 0 9 17 335 42 0 0 0
ODI 0 0 0 57 151 0 0 0
CDI 0 0 0 13 352 249 0 0
VCDI 0 0 0 0 90 1206 1520 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 4080 2937 19 7 0 0 0 0
OW 0 302 89 85 0 0 0 0
VODI 0 33 59 230 5 0 0 0
ODI 0 0 8 162 84 0 0 0
CDI 0 0 0 75 367 136 0 0
VCDI 0 0 0 0 179 1319 1520 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 7397 3385 98 153 11 0 0 0
OW 0 75 67 145 63 0 0 0
VODI 0 1 15 194 106 8 0 0
ODI 0 0 2 49 125 36 0 0
CDI 0 0 0 23 109 400 1 0
VCDI 0 0 0 7 44 400 73 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 7397 3365 106 194 38 2 0 0
OW 0 73 43 158 71 7 0 0
VODI 0 18 20 126 118 35 0 0
ODI 0 5 7 49 66 58 0 0
CDI 0 0 6 31 135 342 2 0
VCDI 0 0 0 13 30 400 72 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 0 356 0 0 0 0 0 0
OW 5 205 26 20 0 0 0 0
VODI 0 13 16 34 9 0 0 0
ODI 0 3 15 34 21 2 0 0
CDI 0 0 7 82 117 248 14 0
VCDI 0 0 0 4 165 510 2787 1110
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 298 0 0 0 0 0 0
OW 2 119 0 6 0 0 0 0
VODI 3 67 12 17 3 0 0 0
ODI 0 40 8 13 17 1 0 0
CDI 0 43 31 65 50 179 78 1
VCDI 0 10 13 73 242 580 2723 1109

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 8 10 0 0
CDI 0 0 0 0 43 96 3 0
VCDI 0 0 0 0 448 1965 3863 2102
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 10 11 0 0
CDI 0 0 0 0 56 73 4 0
VCDI 0 0 0 0 433 1987 3862 2102

Labrador Sea:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 10361 2461 7 2 0 0 0 0
OW 7 702 61 41 15 0 0 0
VODI 3 95 49 102 9 0 0 0
ODI 0 22 11 104 28 0 0 0
CDI 0 23 24 107 155 4 0 0
VCDI 0 0 2 91 519 500 241 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 10371 2298 5 1 0 0 0 0
OW 0 503 31 45 16 0 0 0
VODI 0 267 31 66 3 0 0 0
ODI 0 112 22 36 13 0 0 0
CDI 0 72 34 137 81 0 0 0
VCDI 0 51 31 162 613 504 241 0


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