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: 2024-02-15

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: 2024-02-19

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 34 2 14 0 0 0 0
OW 0 44 21 41 0 0 0 0
VODI 0 4 8 53 33 0 0 0
ODI 0 0 4 24 131 15 0 0
CDI 0 0 0 45 163 552 85 0
VCDI 0 0 0 75 127 650 6028 28749
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 53 7 13 0 0 0 0
OW 0 16 10 31 0 0 0 0
VODI 0 8 7 50 24 2 0 0
ODI 0 4 6 24 102 29 0 0
CDI 0 1 5 47 142 443 177 0
VCDI 0 0 0 87 186 743 5936 28749

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 3 84 3032
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 3 84 3032

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 0 0 9978
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 0 0 9978

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 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 0 127 1480 4046
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 0 127 1480 4046

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 0 0 7224
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 0 0 7224

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 7 2 13
VCDI 0 0 0 0 0 99 824 4354
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 12 3 14
VCDI 0 0 0 0 0 94 823 4353

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 83 0 0 0 0 0 0
OW 0 131 3 1 0 0 0 0
VODI 0 102 7 11 0 0 0 0
ODI 0 54 19 27 1 1 0 0
CDI 0 37 29 89 18 25 3 0
VCDI 0 1 0 138 222 659 4333 323
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 29 0 0 0 0 0 0
OW 0 76 0 0 0 0 0 0
VODI 0 82 2 1 0 0 0 0
ODI 0 69 6 15 1 0 0 0
CDI 0 57 4 16 11 19 4 0
VCDI 0 95 46 234 229 666 4332 323

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2957 3923 38 17 0 0 0 0
OW 0 429 167 128 2 0 0 0
VODI 0 63 52 393 66 0 0 0
ODI 0 11 7 156 364 27 0 0
CDI 0 0 3 88 528 675 55 0
VCDI 0 0 0 19 155 549 450 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2957 3781 53 37 0 0 0 0
OW 0 372 81 110 6 0 0 0
VODI 0 205 97 230 91 0 0 0
ODI 0 38 16 201 282 37 2 0
CDI 0 19 10 128 438 577 86 0
VCDI 0 11 10 95 298 637 417 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 3667 3443 44 14 0 0 0 0
OW 0 195 182 194 1 0 0 0
VODI 0 7 19 412 134 0 0 0
ODI 0 0 0 62 225 19 0 0
CDI 0 0 0 4 173 403 15 0
VCDI 0 0 0 0 0 675 1745 63
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3667 3349 53 46 0 0 0 0
OW 0 237 102 157 3 0 0 0
VODI 0 39 70 268 78 1 0 0
ODI 0 20 20 159 168 2 0 0
CDI 0 0 0 55 241 277 8 0
VCDI 0 0 0 1 43 817 1752 63

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7437 3182 99 161 12 0 0 0
OW 0 71 74 132 35 0 0 0
VODI 0 1 7 130 90 8 0 0
ODI 0 0 0 38 77 13 0 0
CDI 0 0 0 15 147 174 0 0
VCDI 0 0 0 0 20 782 282 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7437 3120 100 154 13 0 0 0
OW 0 107 20 121 35 3 0 0
VODI 0 21 47 57 67 12 0 0
ODI 0 6 12 83 39 12 0 0
CDI 0 0 1 58 155 66 2 0
VCDI 0 0 0 3 72 884 280 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 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 5 51 31 1 0
CDI 0 0 0 4 60 414 54 0
VCDI 0 0 0 0 48 518 4046 571
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 3 1 0
ODI 0 0 0 1 20 35 11 0
CDI 0 0 0 8 81 348 67 0
VCDI 0 0 0 0 58 577 4022 571

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 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 1 2 0
VCDI 0 0 0 0 0 125 1611 6799
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 9 0
VCDI 0 0 0 0 0 125 1604 6799

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6813 4313 129 81 6 0 0 0
OW 6 329 116 207 59 0 0 0
VODI 0 3 38 411 90 10 0 0
ODI 0 0 0 69 205 28 0 0
CDI 0 0 0 8 442 212 3 0
VCDI 0 0 0 1 67 1174 926 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6818 4226 134 108 10 0 0 0
OW 1 225 70 163 69 1 0 0
VODI 0 168 49 224 44 21 0 0
ODI 0 26 28 175 124 29 0 0
CDI 0 0 2 105 449 111 4 0
VCDI 0 0 0 2 173 1262 925 0


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