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: 2020-11-12

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-11-16

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 271 2000 3 3 0 0 0 0
OW 0 271 27 69 2 0 0 0
VODI 0 89 25 249 31 4 0 0
ODI 0 22 0 65 210 69 0 0
CDI 0 7 4 48 210 251 1 0
VCDI 0 0 0 59 317 4485 13345 14765
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 270 1546 0 0 1 0 0 0
OW 1 289 3 4 8 17 0 0
VODI 0 296 18 77 24 54 0 0
ODI 0 172 20 99 25 144 0 0
CDI 0 72 12 123 134 140 34 0
VCDI 0 14 6 190 578 4454 13312 14765

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 32 324 1231 1546
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 0 0 0
VCDI 0 0 0 0 30 324 1231 1546

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 4 2 0 0 0
VODI 0 0 0 2 36 1 0 0
ODI 0 0 0 0 26 22 0 0
CDI 0 0 0 0 11 93 0 0
VCDI 0 0 0 0 3 350 3277 6155
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 18 0 0 0
VODI 0 0 0 2 27 22 0 0
ODI 0 0 0 1 20 52 1 0
CDI 0 0 0 0 11 80 10 0
VCDI 0 0 0 0 2 312 3266 6155

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1545 1882 32 45 0 0 0 0
OW 65 64 9 109 16 0 0 0
VODI 0 32 0 35 103 0 0 0
ODI 0 2 0 0 122 30 0 0
CDI 0 0 0 0 19 162 5 0
VCDI 0 0 0 0 0 424 929 24
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1579 1811 23 53 1 0 0 0
OW 30 110 13 66 31 0 0 0
VODI 1 47 5 63 95 28 0 0
ODI 0 12 0 7 80 58 1 0
CDI 0 0 0 0 43 62 31 0
VCDI 0 0 0 0 10 468 902 24

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 28 3 5 0 0 0 0
OW 0 1 2 44 0 0 0 0
VODI 0 0 0 24 28 0 0 0
ODI 0 0 0 0 65 15 7 0
CDI 0 0 0 0 3 378 252 12
VCDI 0 0 0 0 0 309 2444 3626
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 29 4 36 0 0 0 0
OW 0 0 1 29 0 0 0 0
VODI 0 0 0 8 66 68 33 0
ODI 0 0 0 0 30 232 129 3
CDI 0 0 0 0 0 89 303 56
VCDI 0 0 0 0 0 313 2238 3579

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 5 0 0 0
VODI 0 0 0 0 79 68 0 0
ODI 0 0 0 0 92 207 0 0
CDI 0 0 0 0 108 1205 22 0
VCDI 0 0 0 0 46 1644 1604 246
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 44 31 0 0
OW 0 0 0 0 35 149 0 0
VODI 0 0 0 0 55 225 0 0
ODI 0 0 0 0 21 344 1 0
CDI 0 0 0 0 34 524 62 0
VCDI 0 0 0 0 141 1851 1563 246

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1759 2182 5 7 0 0 0 0
OW 0 175 18 114 1 0 0 0
VODI 0 29 6 121 66 0 0 0
ODI 0 0 0 24 183 11 1 0
CDI 0 0 0 1 146 174 6 0
VCDI 0 0 0 0 48 939 315 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1754 2040 4 7 0 0 0 0
OW 5 152 6 14 0 0 0 0
VODI 0 136 7 50 2 0 0 0
ODI 0 55 10 92 57 15 0 0
CDI 0 3 2 92 136 78 8 0
VCDI 0 0 0 12 249 1031 314 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 10215 1096 9 11 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 10215 1096 9 11 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 6163 2515 15 72 0 0 0 0
OW 0 34 10 113 23 0 0 0
VODI 0 13 1 82 78 0 0 0
ODI 0 6 2 31 106 11 0 0
CDI 0 7 4 14 168 170 1 0
VCDI 0 0 0 8 80 1484 485 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6163 2486 16 102 3 0 0 0
OW 0 49 8 104 45 0 0 0
VODI 0 19 1 60 103 1 0 0
ODI 0 12 2 25 99 20 0 0
CDI 0 9 3 8 105 151 2 0
VCDI 0 0 2 21 100 1493 484 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 10357 2022 26 151 178 62 0 0
OW 0 4 3 23 12 15 0 0
VODI 0 0 0 16 15 18 1 0
ODI 0 0 0 0 36 37 1 0
CDI 0 0 0 0 11 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 10357 2023 26 159 189 86 0 0
OW 0 3 3 25 8 16 2 0
VODI 0 0 0 6 32 25 0 0
ODI 0 0 0 0 23 5 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 1400 1057 6 16 0 0 0 0
OW 0 127 12 59 43 0 0 0
VODI 0 63 10 136 166 0 0 0
ODI 0 11 2 27 215 38 0 0
CDI 0 0 0 1 130 244 0 0
VCDI 0 0 0 0 95 1190 755 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1400 839 4 8 22 0 0 0
OW 0 246 13 82 98 0 0 0
VODI 0 94 7 93 67 0 0 0
ODI 0 48 1 29 76 16 0 0
CDI 0 31 5 24 144 99 0 0
VCDI 0 0 0 3 242 1357 755 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 3139 3383 56 237 39 0 0 0
OW 8 175 13 187 96 0 0 0
VODI 0 122 4 127 269 0 0 0
ODI 0 15 3 71 289 4 0 0
CDI 0 0 0 6 134 2 0 0
VCDI 0 0 0 0 141 67 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3141 3034 62 388 297 0 0 0
OW 6 224 3 70 145 3 0 0
VODI 0 338 4 71 170 0 0 0
ODI 0 96 6 57 58 1 0 0
CDI 0 3 1 39 63 1 0 0
VCDI 0 0 0 3 235 68 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 18536 1600 1 7 0 0 0 0
OW 20 9 3 0 0 0 0 0
VODI 0 17 0 1 0 0 0 0
ODI 0 4 3 8 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 18543 1598 1 7 0 0 0 0
OW 13 10 1 0 0 0 0 0
VODI 0 13 2 0 0 0 0 0
ODI 0 8 1 3 0 0 0 0
CDI 0 1 2 6 0 0 0 0
VCDI 0 0 0 0 0 0 0 0


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