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: 2023-12-07

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: 2023-12-11

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 14 0 0 0 0 0 0
OW 0 22 12 2 0 0 0 0
VODI 0 8 5 35 0 0 0 0
ODI 0 19 5 22 26 0 0 0
CDI 0 6 19 68 102 146 14 0
VCDI 0 0 0 0 63 465 6304 29545
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 12 6 1 0 0 0 0
OW 0 7 6 10 0 0 0 0
VODI 0 3 2 22 0 0 0 0
ODI 0 1 2 14 9 0 0 0
CDI 0 46 25 63 93 85 16 0
VCDI 0 0 0 17 89 526 6302 29545

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 0 109 442 2568
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 0 109 442 2568

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 16 1304 8658
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 16 1303 8658

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 142 63 149 0 0 0 0
OW 0 11 56 208 24 0 0 0
VODI 0 0 2 270 206 4 0 0
ODI 0 0 0 38 433 54 0 0
CDI 0 0 0 0 87 646 0 0
VCDI 0 0 0 0 0 498 1728 1034
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 139 81 224 37 0 0 0
OW 0 14 37 219 152 1 0 0
VODI 0 0 3 194 344 105 0 0
ODI 0 0 0 28 176 190 0 0
CDI 0 0 0 0 41 388 93 0
VCDI 0 0 0 0 0 518 1635 1034

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 1 0 0
VCDI 0 0 0 0 0 10 484 6729
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 3 0 0
VCDI 0 0 0 0 0 8 484 6729

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 2
VCDI 0 0 0 0 0 7 456 4834
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 7 456 4835

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 164 4 1 0 0 0 0
OW 0 278 146 57 3 0 0 0
VODI 0 8 14 401 62 0 0 0
ODI 0 4 5 85 316 5 0 0
CDI 0 2 8 77 113 222 12 0
VCDI 0 0 0 36 193 501 2792 808
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 110 1 1 0 0 0 0
OW 0 217 42 28 7 0 0 0
VODI 0 92 79 186 44 0 0 0
ODI 0 18 30 197 214 8 0 0
CDI 0 14 15 128 205 120 12 0
VCDI 0 5 10 117 217 600 2792 808

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6043 3165 45 45 0 0 0 0
OW 0 251 74 75 0 0 0 0
VODI 0 126 23 204 14 0 0 0
ODI 0 19 27 105 74 0 0 0
CDI 0 9 11 110 178 56 1 0
VCDI 0 0 0 8 170 243 246 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6043 3024 31 47 0 0 0 0
OW 0 231 34 67 0 0 0 0
VODI 0 141 51 109 14 0 0 0
ODI 0 69 17 123 37 0 0 0
CDI 0 53 10 68 138 21 2 0
VCDI 0 52 37 133 247 278 245 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 5191 2284 76 28 0 0 0 0
OW 0 44 85 134 0 0 0 0
VODI 0 0 6 238 70 0 0 0
ODI 0 0 0 22 196 9 0 0
CDI 0 0 0 4 94 329 26 0
VCDI 0 0 0 4 20 159 2458 219
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5191 2259 87 84 12 0 0 0
OW 0 64 61 104 21 0 0 0
VODI 0 5 19 142 68 2 0 0
ODI 0 0 0 86 94 32 0 0
CDI 0 0 0 14 164 304 75 0
VCDI 0 0 0 0 21 159 2409 219

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8481 2773 83 226 74 10 0 0
OW 0 6 19 105 36 21 0 0
VODI 0 0 0 80 68 28 0 0
ODI 0 0 0 8 114 35 11 0
CDI 0 0 0 0 35 383 102 0
VCDI 0 0 0 0 0 84 205 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8481 2773 79 253 76 30 0 0
OW 0 6 23 106 73 32 7 0
VODI 0 0 0 51 95 39 13 0
ODI 0 0 0 9 51 105 44 0
CDI 0 0 0 0 32 263 244 0
VCDI 0 0 0 0 0 92 10 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 25 955 43 34 0 0 0 0
OW 0 47 78 74 17 0 0 0
VODI 0 0 4 206 91 0 0 0
ODI 0 0 0 59 164 47 0 0
CDI 0 0 0 33 124 733 56 0
VCDI 0 0 0 0 115 643 2254 1
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 25 931 53 61 7 0 0 0
OW 0 51 37 74 48 0 0 0
VODI 0 19 21 92 119 33 0 0
ODI 0 1 12 79 59 262 0 0
CDI 0 0 2 84 146 474 99 0
VCDI 0 0 0 16 132 654 2211 1

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 898 2302 187 494 70 0 0 0
OW 130 326 188 347 83 0 0 0
VODI 3 21 20 245 176 1 0 0
ODI 0 1 0 43 335 36 0 0
CDI 0 0 0 10 514 595 18 0
VCDI 0 0 0 5 56 527 907 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 914 1957 185 664 151 0 0 0
OW 89 545 132 218 213 0 0 0
VODI 24 140 71 180 360 82 0 0
ODI 4 8 7 65 296 290 37 0
CDI 0 0 0 7 141 487 517 0
VCDI 0 0 0 10 73 300 371 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 13855 1181 46 53 6 0 0 0
OW 93 195 66 55 20 0 0 0
VODI 0 6 22 67 38 1 0 0
ODI 0 0 0 1 15 8 0 0
CDI 0 0 0 0 1 17 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 13758 1148 61 71 34 1 0 0
OW 183 183 34 60 30 10 0 0
VODI 7 51 32 40 14 11 0 0
ODI 0 0 7 5 2 4 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0


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