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: 2023-11-23

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: 2023-11-27

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 10 0 0 0 0 0 0
VODI 0 17 0 0 0 0 0 0
ODI 0 30 12 31 5 0 0 0
CDI 0 31 30 87 82 50 0 0
VCDI 0 0 1 14 89 1411 6869 28133
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 1 0 0 0 0 0 0
ODI 0 6 0 0 0 0 0 0
CDI 0 50 15 38 31 8 0 0
VCDI 0 31 28 94 145 1453 6869 28133

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 0 111 0 0
VCDI 0 0 0 0 0 463 1068 1477
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 30 0 0
CDI 0 0 0 0 0 83 0 0
VCDI 0 0 0 0 0 461 1068 1477

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 7 2 0
CDI 0 0 0 0 0 81 15 0
VCDI 0 0 0 0 0 330 2122 7421
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 24 10 0
VCDI 0 0 0 0 0 393 2129 7421

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 1836 32 11 0 0 0 0
OW 0 245 128 95 0 0 0 0
VODI 0 32 27 313 64 0 0 0
ODI 0 1 2 36 211 20 0 0
CDI 0 0 0 35 100 158 0 0
VCDI 0 0 0 5 85 536 1626 55
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1772 62 38 0 0 0 0
OW 0 172 46 107 13 0 0 0
VODI 0 106 43 135 64 8 0 0
ODI 0 51 15 75 92 20 0 0
CDI 0 13 23 78 102 34 0 0
VCDI 0 0 0 62 189 652 1626 55

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 62 1397 5765
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 1397 5765

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 0 116 1491 3692
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 0 116 1491 3692

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 849 89 41 0 0 0 0
OW 0 264 85 96 0 0 0 0
VODI 0 35 31 287 11 0 0 0
ODI 0 8 3 119 159 3 0 0
CDI 0 15 3 56 216 103 0 0
VCDI 0 22 15 91 191 492 2284 749
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 804 102 71 0 0 0 0
OW 0 140 58 140 7 0 0 0
VODI 0 112 14 170 66 0 0 0
ODI 0 57 17 79 64 2 0 0
CDI 0 25 11 75 126 45 8 0
VCDI 0 55 24 155 314 551 2276 749

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6748 2642 17 16 5 0 0 0
OW 0 314 79 43 0 0 0 0
VODI 0 33 51 236 25 0 0 0
ODI 0 0 0 86 106 3 0 0
CDI 0 0 0 43 280 242 13 0
VCDI 0 0 0 0 20 165 155 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6748 2581 19 22 5 0 0 0
OW 0 176 20 40 4 0 0 0
VODI 0 173 53 70 11 0 0 0
ODI 0 55 27 109 63 1 0 0
CDI 0 4 28 178 288 139 13 0
VCDI 0 0 0 5 65 270 155 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 5778 1663 2 0 0 0 0 0
OW 0 568 70 16 0 0 0 0
VODI 0 39 70 164 0 0 0 0
ODI 0 4 13 186 116 0 0 0
CDI 0 0 0 55 388 595 6 0
VCDI 0 0 0 0 9 920 1034 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5778 1524 0 0 0 0 0 0
OW 0 319 22 3 0 0 0 0
VODI 0 263 45 37 0 0 0 0
ODI 0 130 25 111 22 0 0 0
CDI 0 38 63 252 389 303 4 0
VCDI 0 0 0 18 102 1212 1036 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 9458 2288 91 235 97 0 0 0
OW 0 26 31 39 127 18 0 0
VODI 0 0 2 50 66 41 0 0
ODI 0 0 0 22 55 45 0 0
CDI 0 0 0 0 135 161 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 9458 2274 95 236 122 0 0 0
OW 0 40 11 37 121 41 0 0
VODI 0 0 18 35 60 88 0 0
ODI 0 0 0 36 85 93 0 0
CDI 0 0 0 2 92 43 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 32 1317 60 96 9 0 0 0
OW 0 38 44 114 38 0 0 0
VODI 0 4 14 165 148 27 0 0
ODI 0 0 0 72 327 96 0 0
CDI 0 0 0 0 117 897 23 0
VCDI 0 0 0 0 88 871 1206 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 32 1309 76 176 30 0 0 0
OW 0 24 13 129 128 27 0 0
VODI 0 15 19 42 227 176 0 0
ODI 0 7 7 53 135 169 0 0
CDI 0 4 3 47 98 601 53 0
VCDI 0 0 0 0 109 918 1176 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 3676 3184 87 73 2 0 0 0
OW 9 215 74 139 3 0 0 0
VODI 0 29 12 208 81 0 0 0
ODI 0 2 1 24 208 0 0 0
CDI 0 0 0 19 85 83 0 0
VCDI 0 0 0 8 73 243 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3682 3145 86 88 3 0 0 0
OW 3 237 59 208 37 0 0 0
VODI 0 42 20 115 190 1 0 0
ODI 0 4 7 17 97 1 0 0
CDI 0 1 1 15 46 45 0 0
VCDI 0 1 1 28 79 279 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 14720 847 7 29 1 0 0 0
OW 0 68 0 36 19 0 0 0
VODI 0 5 0 1 13 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 14719 812 7 42 3 0 0 0
OW 1 91 0 24 28 0 0 0
VODI 0 17 0 0 2 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


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