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: 2021-12-30

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-01-03

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 0 264 10 36 2 0 0 0
OW 0 26 4 17 16 0 0 0
VODI 0 14 7 28 22 0 0 0
ODI 0 2 3 26 27 2 0 0
CDI 0 0 0 21 50 13 0 0
VCDI 0 0 0 4 136 440 3567 32165
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 244 10 27 1 0 0 0
OW 0 29 3 19 10 0 0 0
VODI 0 22 4 26 16 0 0 0
ODI 0 9 4 26 23 1 0 0
CDI 0 2 3 18 45 7 0 0
VCDI 0 0 0 16 158 447 3567 32165

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 62 421 2650
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 62 421 2650

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 0 0 0
VCDI 0 0 0 0 0 0 0 9982
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 9982

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 23 58 7
VCDI 0 0 0 0 0 98 2209 3259
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 9 15 2
VCDI 0 0 0 0 0 112 2252 3264

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 1 0 0
CDI 0 0 0 0 0 29 1 4
VCDI 0 0 0 0 0 154 1506 5551
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 1 0 0
CDI 0 0 0 0 0 37 1 5
VCDI 0 0 0 0 0 146 1506 5550

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 0
VCDI 0 0 0 0 0 0 0 5326
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 5326

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 17 3 9 0 0 0 0
OW 0 7 0 8 0 0 0 0
VODI 0 10 1 9 0 0 0 0
ODI 0 8 1 3 0 0 0 0
CDI 0 11 1 3 0 18 1 0
VCDI 0 11 3 100 86 249 2536 3236
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 10 3 4 0 0 0 0
OW 0 5 0 5 0 0 0 0
VODI 0 8 1 8 0 0 0 0
ODI 0 10 0 6 0 2 0 0
CDI 0 7 2 6 0 19 2 2
VCDI 0 24 3 103 86 246 2535 3234

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3129 3825 56 282 26 0 0 0
OW 0 96 25 141 48 3 0 0
VODI 0 27 8 162 100 7 1 0
ODI 0 16 3 51 170 18 4 0
CDI 0 22 1 34 207 106 5 0
VCDI 0 28 2 109 351 439 1829 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3129 3765 53 267 43 0 0 0
OW 0 128 25 132 55 5 1 0
VODI 0 37 10 148 88 10 5 0
ODI 0 17 1 72 119 25 4 0
CDI 0 19 4 40 178 91 8 0
VCDI 0 48 2 120 419 442 1821 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 5361 3314 25 57 3 0 0 0
OW 0 82 3 58 9 0 0 0
VODI 0 61 4 58 38 0 0 0
ODI 0 37 3 37 48 0 0 0
CDI 0 7 3 67 80 16 2 0
VCDI 0 0 0 45 211 514 1553 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5361 3118 20 21 4 0 0 0
OW 0 133 5 52 3 0 0 0
VODI 0 94 5 68 15 0 0 0
ODI 0 52 0 42 43 0 0 0
CDI 0 69 4 39 72 17 5 0
VCDI 0 35 4 100 252 513 1550 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 8306 3082 44 171 231 373 78 0
OW 0 37 11 38 27 59 19 0
VODI 0 5 3 45 30 5 17 0
ODI 0 0 0 19 35 12 13 0
CDI 0 0 0 10 46 47 17 0
VCDI 0 0 0 0 29 88 91 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8306 3014 46 182 269 407 106 0
OW 0 61 5 25 6 31 15 0
VODI 0 30 5 23 20 9 19 0
ODI 0 16 1 23 21 5 18 0
CDI 0 3 1 26 24 32 23 0
VCDI 0 0 0 4 58 100 54 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 0 722 9 24 0 0 0 0
OW 0 48 9 34 0 0 0 0
VODI 0 11 7 62 16 0 0 0
ODI 0 0 0 36 42 0 0 0
CDI 0 0 0 11 79 5 0 0
VCDI 0 0 0 3 189 748 3317 431
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 616 6 10 0 0 0 0
OW 0 81 2 13 0 0 0 0
VODI 0 60 7 33 5 0 0 0
ODI 0 18 7 43 12 0 0 0
CDI 0 6 3 46 48 2 0 0
VCDI 0 0 0 25 261 751 3317 431

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 30 21 0 0
CDI 0 0 0 0 45 376 18 0
VCDI 0 0 0 0 29 1120 4980 1968
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 2 11 0
CDI 0 0 0 0 46 136 94 0
VCDI 0 0 0 0 48 1379 4893 1968

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14805 3276 23 33 0 0 0 0
OW 19 151 15 52 20 0 0 0
VODI 0 109 9 63 72 3 0 0
ODI 0 50 1 42 188 11 0 0
CDI 0 12 1 51 327 161 0 0
VCDI 0 0 0 6 158 332 219 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14824 3218 26 32 10 0 0 0
OW 0 125 7 41 24 1 0 0
VODI 0 114 5 49 58 8 0 0
ODI 0 74 6 37 108 12 0 0
CDI 0 63 4 34 280 99 0 0
VCDI 0 4 1 54 285 387 219 0


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