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: 2021-01-21

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-01-25

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 0 401 19 79 17 0 0 0
OW 0 11 3 50 29 1 0 0
VODI 0 4 1 35 53 6 0 0
ODI 0 0 0 11 63 24 4 0
CDI 0 0 0 7 64 69 17 0
VCDI 0 0 0 10 78 878 6084 28884
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 375 14 43 14 0 0 0
OW 0 35 5 47 17 3 0 0
VODI 0 5 3 43 28 14 0 0
ODI 0 1 1 31 42 14 0 0
CDI 0 0 0 12 67 25 0 0
VCDI 0 0 0 16 136 922 6105 28884

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 92 543 2498
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 92 543 2498

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 12 0 1
VCDI 0 0 0 0 0 149 3333 6487
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 17 12 1
VCDI 0 0 0 0 0 144 3321 6487

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 6 0 0 0
CDI 0 0 0 0 37 3 0 0
VCDI 0 0 0 0 105 238 1707 3558
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 3 0 0 0
CDI 0 0 0 0 20 0 1 0
VCDI 0 0 0 0 125 241 1706 3558

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 48
VCDI 0 0 0 0 0 0 0 7198
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 37
VCDI 0 0 0 0 0 0 0 7209

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 8 366 4952
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 8 366 4952

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 89 3 14 0 0 0 0
OW 0 6 2 9 5 0 0 0
VODI 0 0 1 8 10 0 0 0
ODI 0 0 0 3 10 0 0 0
CDI 0 0 0 2 23 4 0 0
VCDI 0 0 0 0 22 946 4024 1150
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 83 3 12 0 0 0 0
OW 0 6 1 9 1 0 0 0
VODI 0 6 1 6 7 0 0 0
ODI 0 0 1 4 14 0 0 0
CDI 0 0 0 4 16 8 0 0
VCDI 0 0 0 1 32 942 4024 1150

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3686 4067 69 261 18 0 0 0
OW 0 18 10 203 80 3 0 0
VODI 0 4 0 83 252 19 0 0
ODI 0 0 0 18 293 72 0 0
CDI 0 0 0 17 160 380 0 0
VCDI 0 0 0 15 130 1162 311 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3686 4053 73 317 74 4 0 0
OW 0 22 6 143 146 33 0 0
VODI 0 8 0 81 193 87 0 0
ODI 0 5 0 13 176 142 0 0
CDI 0 1 0 16 149 211 0 0
VCDI 0 0 0 27 195 1159 311 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 5685 2667 4 8 0 0 0 0
OW 0 109 7 27 0 0 0 0
VODI 0 83 15 92 2 0 0 0
ODI 0 17 3 90 32 0 0 0
CDI 0 5 0 35 110 1 0 0
VCDI 0 0 1 43 308 939 1380 33
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5685 2490 0 0 0 0 0 0
OW 0 177 4 6 0 0 0 0
VODI 0 139 11 39 0 0 0 0
ODI 0 49 11 83 3 0 0 0
CDI 0 15 3 86 55 0 0 0
VCDI 0 11 1 81 394 940 1380 33

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8161 3140 29 105 54 0 0 0
OW 0 98 8 44 14 3 0 0
VODI 0 56 7 68 50 3 0 0
ODI 0 16 7 29 78 3 0 0
CDI 0 1 4 39 79 104 21 0
VCDI 0 0 0 23 100 327 317 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8161 3058 37 136 66 5 0 0
OW 0 88 3 48 47 3 0 0
VODI 0 86 0 13 71 6 0 0
ODI 0 50 4 13 46 41 1 0
CDI 0 25 7 39 18 101 96 0
VCDI 0 4 4 59 127 284 241 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 0 331 8 21 4 0 0 0
OW 0 28 11 36 9 0 0 0
VODI 0 16 7 83 27 0 0 0
ODI 0 0 1 49 47 0 0 0
CDI 0 0 0 11 86 9 1 0
VCDI 0 0 0 2 151 671 2917 1277
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 283 3 17 0 0 0 0
OW 0 50 3 8 3 0 0 0
VODI 0 34 11 31 19 0 0 0
ODI 0 8 10 54 27 0 0 0
CDI 0 0 0 65 53 0 1 0
VCDI 0 0 0 27 222 680 2917 1277

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 0 0 0
CDI 0 0 0 0 0 2 6 0
VCDI 0 0 0 0 0 120 1329 7130
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 5 2
VCDI 0 0 0 0 0 122 1330 7128

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14352 3359 7 6 0 0 0 0
OW 9 228 18 34 1 0 0 0
VODI 6 105 18 133 31 0 0 0
ODI 2 4 9 98 165 2 0 0
CDI 0 0 0 46 217 31 0 0
VCDI 0 0 0 7 299 436 586 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14353 3379 11 14 0 0 0 0
OW 8 199 15 52 4 0 0 0
VODI 6 96 13 87 55 0 0 0
ODI 2 21 7 66 71 0 0 0
CDI 0 1 6 63 115 28 0 0
VCDI 0 0 0 42 468 441 586 0


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