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: 2024-11-14

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: 2024-11-18

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 289 1208 72 67 1 0 0 0
OW 0 31 35 94 7 0 0 0
VODI 0 2 9 243 38 0 0 0
ODI 0 0 2 68 260 2 0 0
CDI 0 0 0 30 276 188 0 0
VCDI 0 0 0 1 155 2589 7975 23260
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 289 1209 87 96 0 0 0 0
OW 0 24 19 136 18 0 0 0
VODI 0 7 6 136 64 1 0 0
ODI 0 1 4 66 130 6 0 0
CDI 0 0 2 47 245 60 0 0
VCDI 0 0 0 22 280 2712 7975 23260

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 16 55 4 11 0 0 0 0
OW 1 25 30 45 0 0 0 0
VODI 0 0 1 98 19 0 0 0
ODI 0 0 0 11 7 1 0 0
CDI 0 0 0 26 78 7 0 0
VCDI 0 0 0 30 503 1117 1034 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7 39 6 10 0 0 0 0
OW 9 34 14 108 7 0 0 0
VODI 1 7 15 27 10 0 0 0
ODI 0 0 0 9 5 1 0 0
CDI 0 0 0 29 44 5 1 0
VCDI 0 0 0 38 541 1119 1033 0

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 10 6 0 0 0
VODI 0 0 0 69 20 0 0 0
ODI 0 0 0 11 43 4 0 0
CDI 0 0 0 0 24 83 8 0
VCDI 0 0 0 0 0 45 1715 7940
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 5 0 0 0 0
OW 0 0 0 45 30 0 0 0
VODI 0 0 0 40 43 8 0 0
ODI 0 0 0 0 16 24 1 0
CDI 0 0 0 0 4 60 20 19
VCDI 0 0 0 0 0 40 1702 7921

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 468 71 143 73 0 0 0
OW 0 46 29 218 138 0 0 0
VODI 0 4 11 266 277 1 0 0
ODI 0 0 0 36 315 99 0 0
CDI 0 0 0 9 118 570 6 0
VCDI 0 0 0 0 40 249 1576 890
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 472 75 250 263 0 0 0
OW 0 29 11 188 193 8 0 0
VODI 0 14 16 133 219 109 0 0
ODI 0 2 7 51 148 228 0 0
CDI 0 1 2 37 59 242 7 0
VCDI 0 0 0 13 79 332 1575 890

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 12 0 0 0
CDI 0 0 0 0 25 11 0 0
VCDI 0 0 0 0 10 130 1169 5867
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 21 0 0 0
VCDI 0 0 0 0 26 141 1169 5867

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 2 0 0 0
CDI 0 0 0 0 16 9 7 3
VCDI 0 0 0 0 27 166 2709 2360
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 2 0 0 0
CDI 0 0 0 0 16 13 10 3
VCDI 0 0 0 0 27 162 2706 2360

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13 1453 129 203 17 0 0 0
OW 0 44 37 146 13 0 0 0
VODI 0 5 7 180 90 0 0 0
ODI 0 0 0 39 304 3 0 0
CDI 0 0 0 6 196 454 22 0
VCDI 0 0 0 6 1 566 2383 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13 1435 137 264 24 0 0 0
OW 0 52 26 170 50 0 0 0
VODI 0 14 10 116 180 1 0 0
ODI 0 1 0 21 258 45 0 0
CDI 0 0 0 4 108 282 44 0
VCDI 0 0 0 5 1 695 2361 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 10247 1044 25 6 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10247 1044 25 6 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 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 6808 2182 10 3 0 0 0 0
OW 0 190 123 45 0 0 0 0
VODI 0 0 17 160 12 0 0 0
ODI 0 0 0 132 32 3 0 0
CDI 0 0 0 29 283 252 17 0
VCDI 0 0 0 0 1 427 970 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6808 1876 0 0 0 0 0 0
OW 0 425 45 13 0 0 0 0
VODI 0 70 87 61 3 0 0 0
ODI 0 1 18 144 8 0 0 0
CDI 0 0 0 151 265 103 1 0
VCDI 0 0 0 0 52 579 986 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 10596 1676 36 116 7 0 0 0
OW 1 61 57 82 8 2 0 0
VODI 0 0 0 112 53 9 0 0
ODI 0 0 0 14 65 54 0 0
CDI 0 0 0 0 2 36 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 10597 1587 39 113 8 0 0 0
OW 0 150 54 148 10 10 0 0
VODI 0 0 0 63 67 43 0 0
ODI 0 0 0 0 45 29 0 0
CDI 0 0 0 0 5 19 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 1095 1442 47 52 4 0 0 0
OW 3 61 60 85 12 0 0 0
VODI 0 0 10 255 84 2 0 0
ODI 0 0 0 40 461 51 0 0
CDI 0 0 0 0 86 650 6 0
VCDI 0 0 0 0 66 620 611 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1096 1453 62 90 14 0 0 0
OW 2 48 36 93 43 2 0 0
VODI 0 2 19 173 121 18 0 0
ODI 0 0 0 66 302 83 0 0
CDI 0 0 0 10 123 419 0 0
VCDI 0 0 0 0 110 801 617 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 7729 380 0 0 0 0 0 0
OW 8 229 11 8 0 0 0 0
VODI 0 49 46 66 0 0 0 0
ODI 0 0 0 8 0 0 0 0
CDI 0 0 0 4 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 7725 314 0 0 0 0 0 0
OW 10 146 3 1 0 0 0 0
VODI 2 115 1 9 0 0 0 0
ODI 0 65 26 21 0 0 0 0
CDI 0 17 26 36 0 0 0 0
VCDI 0 1 1 19 0 0 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 15746 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15746 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 0


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