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: 2024-12-05

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: 2024-12-09

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 0 197 11 1 0 0 0 0
OW 0 52 44 54 1 0 0 0
VODI 0 1 3 74 29 0 0 0
ODI 0 0 0 25 63 9 0 0
CDI 0 0 0 11 117 156 0 0
VCDI 0 0 0 0 17 533 4684 30820
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 193 15 11 0 0 0 0
OW 0 42 18 35 19 3 0 0
VODI 0 15 21 37 24 20 2 0
ODI 0 0 4 65 45 19 18 0
CDI 0 0 0 17 125 189 107 0
VCDI 0 0 0 0 14 467 4557 30820

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 2 6 0
VCDI 0 0 0 0 0 3 346 2762
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 5 50 0
VCDI 0 0 0 0 0 0 302 2762

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 2 6 2
VCDI 0 0 0 0 0 45 1689 8234
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 9 0
CDI 0 0 0 0 0 3 59 6
VCDI 0 0 0 0 0 44 1627 8230

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 5 95 0 0 0
ODI 0 0 0 0 164 34 0 0
CDI 0 0 0 0 39 113 16 0
VCDI 0 0 0 0 71 695 2609 1812
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 15 0 0 0
OW 0 0 0 0 33 0 0 0
VODI 0 0 0 5 65 0 0 0
ODI 0 0 0 0 78 3 4 0
CDI 0 0 0 0 106 86 107 0
VCDI 0 0 0 0 72 753 2514 1812

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 4 0 0
VCDI 0 0 0 0 0 21 775 6424
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 9
VCDI 0 0 0 0 0 21 775 6415

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 4 3 0
VCDI 0 0 0 0 0 34 1080 4178
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 8 17 3
VCDI 0 0 0 0 0 30 1066 4175

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 955 9 0 0 0 0 0
OW 0 250 126 31 0 0 0 0
VODI 0 14 31 280 3 0 0 0
ODI 0 0 0 151 180 1 0 0
CDI 0 0 0 12 251 340 12 3
VCDI 0 0 0 11 53 494 1896 1214
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1036 29 5 0 0 0 0
OW 0 124 77 80 3 0 0 0
VODI 0 59 58 232 50 0 0 0
ODI 0 0 2 143 162 10 0 0
CDI 0 0 0 14 197 238 21 2
VCDI 0 0 0 11 75 587 1887 1215

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8474 1722 9 7 0 0 0 0
OW 39 308 44 38 0 0 0 0
VODI 2 7 15 146 57 0 0 0
ODI 0 0 0 7 128 17 0 0
CDI 0 0 0 1 35 148 6 0
VCDI 0 0 0 0 0 49 63 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8486 1693 21 41 3 0 0 0
OW 24 176 11 35 12 0 0 0
VODI 5 116 29 53 54 0 0 0
ODI 0 52 7 68 84 38 0 0
CDI 0 0 0 2 56 125 8 0
VCDI 0 0 0 0 11 51 61 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 6412 2174 15 2 0 0 0 0
OW 0 203 61 57 2 0 0 0
VODI 0 26 37 123 16 0 0 0
ODI 0 0 4 120 53 0 0 0
CDI 0 0 0 36 290 370 69 0
VCDI 0 0 0 0 9 404 1213 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6412 1963 22 28 0 0 0 0
OW 0 245 3 36 5 0 0 0
VODI 0 181 23 19 17 0 0 0
ODI 0 14 69 92 27 0 0 0
CDI 0 0 0 163 305 207 21 0
VCDI 0 0 0 0 16 567 1261 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 9275 2299 43 42 11 0 0 0
OW 10 161 63 66 13 6 0 0
VODI 0 7 17 113 72 17 0 0
ODI 0 0 1 60 123 47 11 0
CDI 0 0 0 1 75 269 40 0
VCDI 0 0 0 0 0 98 47 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9284 2170 53 70 21 1 0 0
OW 1 223 24 59 44 23 0 0
VODI 0 66 33 59 66 55 7 0
ODI 0 8 13 57 69 151 56 0
CDI 0 0 1 37 93 197 35 0
VCDI 0 0 0 0 1 10 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 13 744 31 59 16 0 0 0
OW 0 83 64 39 20 0 0 0
VODI 0 7 6 120 70 0 0 0
ODI 0 0 0 32 217 48 0 0
CDI 0 0 0 20 157 454 3 0
VCDI 0 0 0 6 115 981 2254 244
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13 716 40 73 12 0 0 0
OW 0 99 19 39 40 0 0 0
VODI 0 19 37 41 119 10 0 0
ODI 0 0 5 58 102 119 30 0
CDI 0 0 0 53 155 423 178 0
VCDI 0 0 0 12 167 931 2049 244

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2490 1741 50 37 0 0 0 0
OW 92 886 65 94 4 0 0 0
VODI 1 65 70 328 66 2 0 0
ODI 0 0 0 104 405 81 0 0
CDI 0 0 0 8 144 514 90 0
VCDI 0 0 0 0 13 613 575 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2489 1666 66 110 0 0 0 0
OW 93 472 25 72 34 0 0 0
VODI 1 378 36 139 154 62 0 0
ODI 0 134 38 145 271 288 105 0
CDI 0 42 20 103 141 294 262 0
VCDI 0 0 0 2 32 566 298 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 14257 1066 47 72 11 0 0 0
OW 8 18 3 30 66 3 0 0
VODI 0 4 0 2 51 24 0 0
ODI 0 0 0 0 11 38 0 0
CDI 0 0 0 0 0 33 0 0
VCDI 0 0 0 0 0 2 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14249 1076 50 103 86 26 0 0
OW 16 12 0 1 31 38 0 0
VODI 0 0 0 0 22 25 0 0
ODI 0 0 0 0 0 8 0 0
CDI 0 0 0 0 0 3 0 0
VCDI 0 0 0 0 0 0 0 0


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