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: 2024-04-25

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: 2024-04-29

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 0 0 0 0 0 0 0
VODI 0 1 0 0 0 0 0 0
ODI 0 2 11 20 10 0 3 0
CDI 0 9 11 29 166 231 16 0
VCDI 0 0 0 38 132 860 5825 29538
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 3 0 5 0
CDI 0 3 10 23 96 53 28 0
VCDI 0 9 12 64 209 1038 5811 29538

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 62 428 2629
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 62 428 2629

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 44 1239 8695
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 44 1239 8695

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 7 1 0 0
ODI 0 0 0 0 9 3 0 0
CDI 0 0 0 0 30 40 0 0
VCDI 0 0 0 0 64 365 3107 2027
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 2 1 0 0
ODI 0 0 0 0 6 2 0 0
CDI 0 0 0 0 32 31 1 0
VCDI 0 0 0 0 70 375 3106 2027

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 1 5 0
CDI 0 0 0 0 0 8 58 0
VCDI 0 0 0 0 0 185 4563 2404
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 7 0
CDI 0 0 0 0 0 8 116 2
VCDI 0 0 0 0 0 185 4503 2402

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 14
VCDI 0 0 0 0 0 0 247 5038
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 4
CDI 0 0 0 0 0 0 0 24
VCDI 0 0 0 0 0 0 247 5024

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 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 1 0 5 0
VCDI 0 0 0 0 4 182 2291 3834
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 1 0 1 0
VCDI 0 0 0 0 4 182 2295 3834

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3041 2431 3 0 0 0 0 0
OW 0 941 119 75 4 0 0 0
VODI 0 121 69 458 57 1 0 0
ODI 0 41 62 439 395 27 0 0
CDI 0 0 0 89 605 677 49 0
VCDI 0 0 0 0 124 1017 477 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3041 2164 0 0 0 0 0 0
OW 0 486 34 18 2 0 0 0
VODI 0 461 43 162 32 0 0 0
ODI 0 274 61 284 175 18 0 0
CDI 0 149 115 554 605 332 21 0
VCDI 0 0 0 43 371 1372 505 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 4750 2601 11 2 0 0 0 0
OW 0 295 110 47 0 0 0 0
VODI 0 27 44 260 33 0 0 0
ODI 0 4 11 125 223 21 7 0
CDI 0 0 0 21 533 1887 192 0
VCDI 0 0 0 0 0 38 454 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4750 2532 13 3 0 0 0 0
OW 0 231 54 37 0 0 0 0
VODI 0 109 69 124 16 1 0 0
ODI 0 27 25 142 70 19 9 0
CDI 0 28 15 149 649 1654 396 0
VCDI 0 0 0 0 54 272 248 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 7494 3113 39 9 2 0 0 0
OW 0 121 151 107 7 0 0 0
VODI 0 0 9 371 38 3 0 0
ODI 0 0 0 48 420 21 0 0
CDI 0 0 0 0 96 508 16 0
VCDI 0 0 0 0 0 25 389 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7494 3084 51 19 5 1 0 0
OW 0 139 93 133 12 8 0 0
VODI 0 11 51 240 116 38 8 0
ODI 0 0 4 128 223 101 25 0
CDI 0 0 0 15 207 409 363 0
VCDI 0 0 0 0 0 0 9 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 0 123 0 0 0 0 0 0
OW 0 180 11 4 0 0 0 0
VODI 0 25 24 17 0 0 0 0
ODI 0 4 14 108 28 2 0 0
CDI 0 0 0 24 144 579 79 0
VCDI 0 0 0 0 83 534 3486 334
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 99 0 0 0 0 0 0
OW 0 87 0 0 0 0 0 0
VODI 0 67 5 0 0 0 0 0
ODI 0 40 13 9 0 2 0 0
CDI 0 39 31 135 153 475 197 0
VCDI 0 0 0 9 102 638 3368 334

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 4 1 0 0
ODI 0 0 0 0 42 23 5 0
CDI 0 0 0 13 229 271 40 23
VCDI 0 0 0 5 143 1999 4490 1250
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 3 3 0 0
ODI 0 0 0 0 20 40 6 0
CDI 0 0 0 0 105 233 60 22
VCDI 0 0 0 18 290 2018 4469 1251

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7988 3980 34 62 2 0 0 0
OW 37 405 128 149 10 0 0 0
VODI 0 7 12 356 122 1 0 0
ODI 0 0 0 95 337 13 0 0
CDI 0 0 0 14 550 601 114 0
VCDI 0 0 0 0 17 178 534 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7954 3729 29 42 3 0 0 0
OW 61 552 110 145 35 0 0 0
VODI 10 111 30 237 101 2 0 0
ODI 0 0 5 176 143 13 2 0
CDI 0 0 0 70 698 599 218 0
VCDI 0 0 0 6 58 179 428 0


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