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: 2023-01-19

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2023-01-23

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 0 284 3 1 0 0 0 0
OW 0 58 4 6 0 0 0 0
VODI 0 47 1 17 1 0 0 0
ODI 0 32 7 29 4 0 0 0
CDI 0 23 11 66 90 2 0 0
VCDI 0 5 0 155 432 1976 5264 28384
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 123 0 0 0 0 0 0
OW 0 61 0 0 0 0 0 0
VODI 0 81 0 0 0 0 0 0
ODI 0 63 1 0 0 0 0 0
CDI 0 60 7 30 7 2 0 0
VCDI 0 61 18 244 520 1976 5264 28384

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 20 865 2248
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 20 865 2248

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 25 1090 8867
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 25 1090 8867

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 0 97 1696 3860
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 3 0 0
VCDI 0 0 0 0 0 95 1696 3860

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 0
VCDI 0 0 0 0 0 0 0 7246
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 7246

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 2 0 0
VCDI 0 0 0 0 0 63 783 4478
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 4 0 0
VCDI 0 0 0 0 0 61 783 4478

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9 123 0 0 0 0 0 0
OW 0 62 0 0 0 0 0 0
VODI 0 50 2 44 21 0 0 0
ODI 0 34 1 43 58 1 0 0
CDI 0 44 1 26 94 66 5 2
VCDI 0 186 13 111 282 1645 2786 622
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9 63 0 0 0 0 0 0
OW 0 41 0 0 0 0 0 0
VODI 0 54 0 6 17 0 0 0
ODI 0 46 1 23 24 23 0 0
CDI 0 53 1 52 61 73 21 9
VCDI 0 242 15 143 353 1616 2770 615

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6993 2442 10 15 0 0 0 0
OW 0 321 10 58 1 0 0 0
VODI 0 183 23 250 100 0 0 0
ODI 0 56 7 88 51 0 0 0
CDI 0 41 2 70 32 0 0 0
VCDI 0 66 6 88 202 146 70 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6992 2068 3 5 0 0 0 0
OW 1 360 11 18 0 0 0 0
VODI 0 306 11 115 22 0 0 0
ODI 0 177 17 155 66 0 0 0
CDI 0 115 6 113 49 0 0 0
VCDI 0 83 10 163 249 146 70 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 5910 2485 7 18 0 0 0 0
OW 0 141 6 28 2 0 0 0
VODI 0 114 10 59 18 0 0 0
ODI 0 60 14 78 35 0 0 0
CDI 0 56 4 117 78 8 10 0
VCDI 0 10 1 40 245 1120 1022 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5910 2223 4 14 0 0 0 0
OW 0 166 4 20 2 0 0 0
VODI 0 170 9 50 13 0 0 0
ODI 0 109 5 55 25 0 0 0
CDI 0 93 9 50 58 24 16 0
VCDI 0 105 11 151 280 1104 1016 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 8422 2721 27 113 51 0 0 0
OW 0 66 16 70 53 0 0 0
VODI 0 14 5 99 122 19 0 0
ODI 0 0 0 33 137 51 0 0
CDI 0 0 0 1 79 189 0 0
VCDI 0 0 0 0 31 520 149 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8422 2719 36 185 110 0 0 0
OW 0 57 3 41 111 14 0 0
VODI 0 24 7 35 110 85 0 0
ODI 0 1 2 32 31 97 0 0
CDI 0 0 0 21 36 136 6 0
VCDI 0 0 0 2 75 447 143 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 92 7 8 0 0 0 0
OW 0 3 2 27 5 0 0 0
VODI 0 0 0 41 22 0 0 0
ODI 0 0 0 25 31 1 0 0
CDI 0 0 0 10 52 16 0 0
VCDI 0 0 0 0 109 361 2886 2105
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 78 7 5 0 0 0 0
OW 0 12 1 11 7 0 0 0
VODI 0 5 1 21 18 0 0 0
ODI 0 0 0 20 15 1 0 0
CDI 0 0 0 38 21 15 0 0
VCDI 0 0 0 16 158 362 2886 2105

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 28 9 0
VCDI 0 0 0 0 0 552 4158 3840
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 40 14 0
VCDI 0 0 0 0 0 540 4153 3840

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12996 3655 25 135 12 0 0 0
OW 0 85 16 91 30 0 0 0
VODI 0 38 13 252 172 0 0 0
ODI 0 0 1 41 339 3 0 0
CDI 0 0 0 0 195 126 0 0
VCDI 0 0 0 0 92 968 924 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12996 3564 23 132 14 0 0 0
OW 0 129 13 94 47 0 0 0
VODI 0 85 18 227 179 0 0 0
ODI 0 0 1 61 214 8 0 0
CDI 0 0 0 5 188 91 3 0
VCDI 0 0 0 0 198 998 921 0


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