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: 2023-11-30

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: 2023-12-04

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 1 0 0 0 0 0 0
OW 0 30 10 3 0 0 0 0
VODI 0 2 4 21 0 0 0 0
ODI 0 1 3 17 4 0 0 0
CDI 0 0 4 42 119 77 6 0
VCDI 0 0 0 0 16 605 7604 28333
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 3 0 0 0 0 0 0
OW 0 10 0 0 0 0 0 0
VODI 0 12 3 0 0 0 0 0
ODI 0 5 7 10 0 0 0 0
CDI 0 4 11 52 53 52 11 0
VCDI 0 0 0 21 86 630 7599 28333

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 8 2 0
VCDI 0 0 0 0 37 585 2268 219
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 36 1
VCDI 0 0 0 0 37 589 2234 218

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 22 21 1
VCDI 0 0 0 0 0 304 3935 5695
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 1 0
CDI 0 0 0 0 0 15 169 2
VCDI 0 0 0 0 0 310 3786 5694

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 1338 113 61 0 0 0 0
OW 0 78 75 281 17 0 0 0
VODI 0 4 4 299 185 0 0 0
ODI 0 0 0 34 294 19 0 0
CDI 0 0 0 0 135 340 3 0
VCDI 0 0 0 0 13 391 1674 295
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1177 101 192 19 0 0 0
OW 0 236 72 196 49 0 0 0
VODI 0 7 19 204 178 8 0 0
ODI 0 0 0 68 179 22 0 0
CDI 0 0 0 15 167 170 0 0
VCDI 0 0 0 0 52 550 1677 295

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 63 994 6167
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 63 994 6167

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 0
VCDI 0 0 0 0 0 0 55 5244
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 55 5244

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 369 48 20 0 0 0 0
OW 0 75 79 158 3 0 0 0
VODI 0 1 13 324 71 1 0 0
ODI 0 0 0 45 406 5 0 0
CDI 0 0 0 3 208 316 18 3
VCDI 0 0 0 0 12 569 2900 670
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 309 55 91 8 0 0 0
OW 0 117 47 189 33 2 0 0
VODI 0 15 28 179 169 0 0 0
ODI 0 4 5 43 252 41 0 0
CDI 0 0 5 44 165 161 4 0
VCDI 0 0 0 4 73 687 2914 673

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6062 2953 62 36 0 0 0 0
OW 0 123 92 157 0 0 0 0
VODI 0 27 6 297 78 0 0 0
ODI 0 2 0 47 192 2 0 0
CDI 0 0 0 5 149 426 20 0
VCDI 0 0 0 0 2 303 281 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6062 2913 83 97 0 0 0 0
OW 0 129 46 130 8 0 0 0
VODI 0 51 31 169 55 0 0 0
ODI 0 10 0 105 114 7 0 0
CDI 0 2 0 38 191 251 21 0
VCDI 0 0 0 3 53 473 280 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 5463 2375 18 6 0 0 0 0
OW 0 121 116 96 0 0 0 0
VODI 0 3 9 208 77 0 0 0
ODI 0 0 0 26 136 10 0 0
CDI 0 0 0 23 118 334 59 0
VCDI 0 0 0 2 30 416 1766 284
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5463 2215 16 11 0 0 0 0
OW 0 233 79 84 1 0 0 0
VODI 0 29 27 135 37 0 0 0
ODI 0 22 11 59 100 1 0 0
CDI 0 0 10 58 146 278 61 0
VCDI 0 0 0 14 77 481 1764 284

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8912 2544 115 195 140 8 0 0
OW 0 27 41 78 43 13 0 0
VODI 0 0 1 81 89 31 0 0
ODI 0 0 0 18 116 108 0 0
CDI 0 0 0 0 67 322 17 0
VCDI 0 0 0 0 3 11 7 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8912 2539 122 209 163 15 0 0
OW 0 32 24 69 54 55 0 0
VODI 0 0 11 53 56 97 0 0
ODI 0 0 0 34 73 64 0 0
CDI 0 0 0 7 106 194 21 0
VCDI 0 0 0 0 6 68 3 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 85 1189 52 59 0 0 0 0
OW 0 76 74 122 4 0 0 0
VODI 0 7 13 319 80 0 0 0
ODI 0 0 0 44 420 41 0 0
CDI 0 0 0 1 144 324 4 0
VCDI 0 0 0 0 39 576 2111 19
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 85 1147 52 88 0 0 0 0
OW 0 84 51 124 14 0 0 0
VODI 0 38 34 192 150 34 0 0
ODI 0 3 2 114 279 60 1 0
CDI 0 0 0 27 175 208 247 0
VCDI 0 0 0 0 69 639 1867 19

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1497 2923 105 91 0 0 0 0
OW 16 631 220 257 0 0 0 0
VODI 0 26 30 943 84 0 0 0
ODI 0 3 4 117 348 31 0 0
CDI 0 0 0 42 113 309 15 0
VCDI 0 0 0 0 51 366 316 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1456 2803 145 151 0 0 0 0
OW 57 614 123 340 11 9 0 0
VODI 0 114 56 707 213 120 33 0
ODI 0 32 20 131 232 91 65 0
CDI 0 20 14 74 52 185 106 0
VCDI 0 0 1 47 88 301 127 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 15114 529 4 2 0 0 0 0
OW 36 45 0 4 0 0 0 0
VODI 0 11 0 1 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 15130 514 3 2 0 0 0 0
OW 20 57 1 3 0 0 0 0
VODI 0 14 0 2 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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