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: 2024-11-28

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: 2024-12-02

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 0 259 8 4 0 0 0 0
OW 0 78 54 34 2 0 0 0
VODI 0 5 24 144 47 2 0 0
ODI 0 0 0 35 160 32 0 0
CDI 0 0 0 6 130 542 22 0
VCDI 0 0 0 0 6 1093 5951 28264
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 226 21 10 1 0 0 0
OW 0 79 23 39 10 0 0 0
VODI 0 32 39 122 53 2 0 0
ODI 0 5 3 37 117 40 0 0
CDI 0 0 0 15 139 401 8 0
VCDI 0 0 0 0 25 1226 5965 28264

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 21 11 0
VCDI 0 0 0 0 0 124 1205 1758
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 12 0
CDI 0 0 0 0 0 9 44 0
VCDI 0 0 0 0 0 136 1160 1758

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 1 0 1
VCDI 0 0 0 0 0 3 291 9682
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 3 291 9683

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 44 20 15 0 0 0 0
OW 0 5 26 49 23 0 0 0
VODI 0 0 0 110 116 23 1 0
ODI 0 0 0 10 291 104 28 0
CDI 0 0 0 0 70 464 116 0
VCDI 0 0 0 0 11 382 1793 1952
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 43 33 35 42 1 0 0
OW 0 5 12 61 58 29 0 0
VODI 0 1 1 62 123 79 46 0
ODI 0 0 0 26 153 193 86 0
CDI 0 0 0 0 125 331 147 0
VCDI 0 0 0 0 10 340 1659 1952

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 3 0
VCDI 0 0 0 0 0 76 1808 5337
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 2 1
VCDI 0 0 0 0 0 76 1809 5336

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 54 4 0
VCDI 0 0 0 0 0 364 2725 2152
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 6 0 0
CDI 0 0 0 0 0 46 2 0
VCDI 0 0 0 0 0 366 2727 2152

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1 1373 30 2 0 0 0 0
OW 0 157 120 102 0 0 0 0
VODI 0 1 19 354 32 0 0 0
ODI 0 1 0 100 222 10 0 0
CDI 0 0 0 20 307 595 4 0
VCDI 0 9 0 0 8 980 1870 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1 1287 37 5 0 0 0 0
OW 0 201 77 142 2 0 0 0
VODI 0 38 43 220 23 0 0 0
ODI 0 6 8 114 109 17 0 0
CDI 0 0 4 89 279 179 0 0
VCDI 0 9 0 8 156 1389 1874 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 9044 1593 8 1 0 0 0 0
OW 31 212 40 11 0 0 0 0
VODI 1 19 1 112 4 0 0 0
ODI 0 1 0 21 70 0 0 0
CDI 0 0 0 3 97 15 0 0
VCDI 0 0 0 0 2 36 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8998 1487 25 22 0 0 0 0
OW 74 212 20 42 0 0 0 0
VODI 4 87 3 62 13 0 0 0
ODI 0 30 1 15 34 0 0 0
CDI 0 9 0 7 78 0 0 0
VCDI 0 0 0 0 48 51 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 6372 2145 1 0 0 0 0 0
OW 0 222 100 27 0 0 0 0
VODI 0 0 29 165 19 0 0 0
ODI 0 0 0 88 56 0 0 0
CDI 0 0 0 27 244 249 24 0
VCDI 0 0 0 0 9 345 1574 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6372 2117 4 0 0 0 0 0
OW 0 196 60 41 0 0 0 0
VODI 0 54 55 88 18 0 0 0
ODI 0 0 11 118 40 0 0 0
CDI 0 0 0 60 234 176 19 0
VCDI 0 0 0 0 36 418 1579 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 9190 2269 38 32 0 0 0 0
OW 3 165 42 91 19 0 0 0
VODI 0 16 6 226 84 0 0 0
ODI 0 0 0 35 182 45 0 0
CDI 0 0 0 3 108 424 0 0
VCDI 0 0 0 0 1 8 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9182 2191 34 50 11 0 0 0
OW 11 216 27 84 33 0 0 0
VODI 0 43 25 145 106 0 0 0
ODI 0 0 0 83 80 54 0 0
CDI 0 0 0 23 142 393 0 0
VCDI 0 0 0 2 22 30 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 11 702 118 194 15 0 0 0
OW 0 15 17 93 50 0 0 0
VODI 0 0 10 117 173 0 0 0
ODI 0 0 0 48 311 58 0 0
CDI 0 0 0 0 90 1106 30 0
VCDI 0 0 0 0 1 1068 1568 8
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11 691 115 220 29 0 0 0
OW 0 21 10 84 142 0 0 0
VODI 0 5 16 50 154 30 0 0
ODI 0 0 4 73 173 154 0 0
CDI 0 0 0 25 130 585 10 0
VCDI 0 0 0 0 12 1463 1588 8

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4459 2365 59 81 0 0 0 0
OW 0 266 142 258 5 0 0 0
VODI 0 24 6 188 33 0 0 0
ODI 0 4 0 47 90 12 0 0
CDI 0 1 1 8 33 125 0 0
VCDI 0 0 0 4 127 200 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4459 2192 75 184 1 0 0 0
OW 0 418 111 199 20 0 0 0
VODI 0 39 21 134 53 0 0 0
ODI 0 8 0 49 42 17 0 0
CDI 0 3 1 14 33 93 0 0
VCDI 0 0 0 6 139 227 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 14712 859 46 62 0 0 0 0
OW 0 27 0 15 16 0 0 0
VODI 0 0 0 0 9 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 14712 863 46 66 0 0 0 0
OW 0 23 0 11 22 0 0 0
VODI 0 0 0 0 3 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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