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: 2020-11-05

Model: ARC MFC - TOPAZ

Data source: OSI SAF N.H. sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2020-11-09

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 236 1866 22 53 3 0 0 0
OW 0 181 13 123 18 0 0 0
VODI 0 69 15 215 108 26 1 0
ODI 0 29 3 132 191 132 17 0
CDI 0 24 5 104 264 193 266 0
VCDI 0 9 0 11 198 2858 13000 16517
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 236 1727 9 20 17 34 0 0
OW 0 292 27 98 108 151 42 0
VODI 0 129 16 271 65 107 143 0
ODI 0 26 4 115 124 12 188 0
CDI 0 2 2 81 158 19 269 0
VCDI 0 2 0 53 310 2886 12642 16517

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 4 0 0 0
ODI 0 0 0 0 11 13 0 0
CDI 0 0 0 0 5 4 2 0
VCDI 0 0 0 0 18 532 1410 1134
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 8 4 0 0
VODI 0 0 0 0 8 11 2 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 2 0 0
VCDI 0 0 0 0 22 532 1410 1134

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 46 6 27 0 0 0 0
OW 0 13 1 45 4 0 0 0
VODI 0 13 4 33 46 0 0 0
ODI 0 0 0 6 82 7 0 0
CDI 0 0 0 0 46 74 0 0
VCDI 0 0 0 0 10 675 2740 6104
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 57 7 44 0 0 0 0
OW 0 8 1 44 16 0 0 0
VODI 0 7 2 16 74 3 0 0
ODI 0 0 1 5 46 74 0 0
CDI 0 0 0 2 26 65 0 0
VCDI 0 0 0 0 26 614 2740 6104

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2046 1900 19 43 0 0 0 0
OW 8 82 17 67 10 0 0 0
VODI 0 19 4 81 90 0 0 0
ODI 0 0 0 4 181 40 0 0
CDI 0 0 0 0 31 274 0 0
VCDI 0 0 0 0 6 307 425 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2049 1946 32 92 12 0 0 0
OW 5 46 6 75 48 0 0 0
VODI 0 8 1 18 158 15 0 0
ODI 0 1 1 5 53 118 0 0
CDI 0 0 0 5 24 132 0 0
VCDI 0 0 0 0 23 356 425 0

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 366 9 46 0 0 0 0
OW 0 137 25 174 11 55 1 0
VODI 0 13 10 251 236 202 140 0
ODI 0 0 0 11 469 152 168 0
CDI 0 0 0 0 108 1286 949 18
VCDI 0 0 0 0 0 294 1918 197
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 233 5 134 199 256 161 0
OW 0 117 24 191 297 130 231 0
VODI 0 166 15 144 164 557 711 0
ODI 0 0 0 13 149 685 491 0
CDI 0 0 0 0 15 177 335 42
VCDI 0 0 0 0 0 184 1247 173

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 428 30 194 54 0 0 0
OW 0 65 17 168 119 5 0 0
VODI 0 0 2 171 287 31 14 0
ODI 0 0 0 13 491 209 23 0
CDI 0 0 0 0 130 903 484 20
VCDI 0 0 0 0 18 444 963 43
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 448 35 291 235 20 14 0
OW 0 45 14 208 291 112 68 0
VODI 0 0 0 47 407 317 245 0
ODI 0 0 0 0 80 177 195 0
CDI 0 0 0 0 44 417 346 23
VCDI 0 0 0 0 42 549 616 40

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1358 2441 21 38 0 0 0 0
OW 0 60 9 114 13 0 0 0
VODI 0 1 3 92 158 2 0 0
ODI 0 0 0 1 189 85 1 0
CDI 0 0 0 0 76 443 17 0
VCDI 0 0 0 0 9 674 526 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1355 2328 9 24 0 0 0 0
OW 3 155 18 105 14 0 0 0
VODI 0 19 6 101 167 20 0 0
ODI 0 0 0 15 153 89 1 0
CDI 0 0 0 0 92 326 39 0
VCDI 0 0 0 0 19 769 504 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 10391 931 8 1 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10391 931 8 1 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 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 6510 2499 11 61 2 0 0 0
OW 0 55 11 76 17 0 0 0
VODI 0 26 4 63 81 0 0 0
ODI 0 13 1 25 106 7 0 0
CDI 0 6 6 16 106 118 0 0
VCDI 0 0 1 18 67 687 1103 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6510 2474 13 93 8 0 0 0
OW 0 62 4 61 42 0 0 0
VODI 0 25 7 33 92 6 0 0
ODI 0 18 2 28 76 15 0 0
CDI 0 15 2 18 80 86 5 0
VCDI 0 5 6 26 81 705 1098 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 10014 2579 19 98 148 22 0 0
OW 0 0 1 26 25 14 0 0
VODI 0 0 0 1 24 11 0 0
ODI 0 0 0 0 6 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 10014 2579 20 116 176 41 0 0
OW 0 0 0 9 22 5 0 0
VODI 0 0 0 0 5 1 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

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1649 1484 22 98 21 0 0 0
OW 0 21 12 80 22 0 0 0
VODI 0 0 0 104 95 27 0 0
ODI 0 0 0 26 306 153 0 0
CDI 0 0 0 0 454 272 0 0
VCDI 0 0 0 0 76 801 80 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1649 1256 17 115 35 1 0 0
OW 0 140 6 58 133 37 0 0
VODI 0 105 7 79 287 57 0 0
ODI 0 4 4 46 114 55 0 0
CDI 0 0 0 10 173 116 0 0
VCDI 0 0 0 0 232 987 80 0

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5025 2978 13 20 0 0 0 0
OW 30 53 4 57 3 0 0 0
VODI 15 14 2 102 6 0 0 0
ODI 0 1 0 48 82 22 0 0
CDI 0 0 0 3 77 32 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 5012 2615 10 12 0 0 0 0
OW 32 198 1 11 3 0 0 0
VODI 26 230 7 65 2 0 0 0
ODI 0 3 0 52 31 11 0 0
CDI 0 0 1 45 65 41 0 0
VCDI 0 0 0 45 67 2 0 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 18734 1444 2 5 0 0 0 0
OW 1 10 0 1 0 0 0 0
VODI 0 6 2 0 0 0 0 0
ODI 0 0 0 4 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 18732 1435 1 5 0 0 0 0
OW 3 8 1 0 0 0 0 0
VODI 0 8 0 1 0 0 0 0
ODI 0 9 2 4 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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