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: 2024-02-29

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: 2024-03-04

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 54 0 0 0 0 0 0
OW 0 77 6 9 0 0 0 0
VODI 0 8 27 38 2 0 0 0
ODI 0 0 7 55 9 0 0 0
CDI 0 0 1 67 151 154 11 0
VCDI 0 0 0 1 39 550 5829 29807
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 31 0 0 0 0 0 0
OW 0 72 1 8 0 0 0 0
VODI 0 28 15 18 0 0 0 0
ODI 0 6 11 43 4 0 0 0
CDI 0 2 12 55 90 89 2 0
VCDI 0 0 2 46 107 615 5838 29807

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 0 436 2683
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 0 436 2683

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 1 0
VCDI 0 0 0 0 0 25 1163 4464
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 5 0
VCDI 0 0 0 0 0 23 1159 4464

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 1
VCDI 0 0 0 0 0 0 0 7223
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 1
VCDI 0 0 0 0 0 0 0 7223

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 17
VCDI 0 0 0 0 0 53 830 4399
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 2
CDI 0 0 0 0 0 0 0 19
VCDI 0 0 0 0 0 53 830 4395

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 53 0 0 0 0 0 0
OW 0 95 1 0 0 0 0 0
VODI 0 43 19 29 6 0 0 0
ODI 0 19 7 50 29 1 0 0
CDI 0 7 3 80 153 115 4 0
VCDI 0 2 0 6 124 1015 4456 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 40 0 0 0 0 0 0
OW 0 41 0 0 0 0 0 0
VODI 0 47 0 0 0 0 0 0
ODI 0 37 12 12 0 0 0 0
CDI 0 39 14 95 59 32 21 0
VCDI 0 15 4 58 253 1099 4439 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 3527 3778 39 1 0 0 0 0
OW 0 283 121 108 2 0 0 0
VODI 0 62 36 422 40 0 0 0
ODI 0 25 14 130 363 12 0 0
CDI 0 14 5 83 330 498 137 0
VCDI 0 0 0 5 70 371 846 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3527 3674 73 30 1 0 0 0
OW 0 218 75 165 23 0 0 0
VODI 0 146 31 264 89 0 0 0
ODI 0 76 11 118 189 1 1 0
CDI 0 43 24 136 348 347 254 0
VCDI 0 5 1 36 155 533 728 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 4607 2981 22 7 0 0 0 0
OW 4 268 95 59 0 0 0 0
VODI 0 4 46 236 8 0 0 0
ODI 0 0 0 135 119 3 0 0
CDI 0 0 0 64 367 427 36 0
VCDI 0 0 0 0 3 930 1275 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4611 2802 24 1 0 0 0 0
OW 0 273 49 59 0 0 0 0
VODI 0 134 38 125 15 0 0 0
ODI 0 39 27 129 73 3 0 0
CDI 0 5 25 173 343 314 169 0
VCDI 0 0 0 14 66 1043 1142 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 7334 3025 82 125 16 0 0 0
OW 0 145 42 114 61 0 0 0
VODI 0 26 15 109 95 7 0 0
ODI 0 8 21 77 164 49 0 0
CDI 0 0 0 44 185 343 0 0
VCDI 0 0 0 0 34 535 331 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7334 2979 88 141 8 0 0 0
OW 0 99 24 137 120 0 0 0
VODI 0 62 5 48 153 73 0 0
ODI 0 35 12 33 64 46 0 0
CDI 0 28 29 78 88 127 2 0
VCDI 0 1 2 32 122 688 329 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 14 4 0 0 0 0 0
VODI 0 5 5 19 7 0 0 0
ODI 0 1 4 24 26 0 0 0
CDI 0 0 0 26 89 178 33 0
VCDI 0 0 0 3 91 212 3406 1656
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 0 0 0
ODI 0 7 2 11 16 0 0 0
CDI 0 13 7 37 44 39 67 0
VCDI 0 0 4 24 150 351 3372 1656

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 0 0 0
VCDI 0 0 0 0 0 485 4771 3282
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 0 481 4771 3282

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6014 4441 76 133 22 0 0 0
OW 13 217 95 209 5 0 0 0
VODI 7 14 7 313 91 0 0 0
ODI 0 0 0 56 477 22 0 0
CDI 0 0 0 17 499 1019 30 0
VCDI 0 0 0 3 105 1027 834 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6034 4404 78 142 2 0 0 0
OW 0 213 80 244 46 0 0 0
VODI 0 50 19 223 133 0 0 0
ODI 0 5 1 88 358 25 0 0
CDI 0 0 0 24 485 849 37 0
VCDI 0 0 0 10 175 1194 827 0


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