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: 2020-12-03

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-12-07

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 0 351 13 75 79 67 0 0
OW 0 19 3 41 87 46 0 0
VODI 0 17 4 26 123 48 4 0
ODI 0 0 3 26 201 42 5 0
CDI 0 0 0 27 62 156 29 14
VCDI 0 0 0 10 99 1320 5341 28564
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 320 10 80 122 121 0 0
OW 0 30 4 33 73 47 12 0
VODI 0 25 3 19 179 23 23 0
ODI 0 12 6 18 113 31 20 0
CDI 0 0 0 29 54 106 22 22
VCDI 0 0 0 26 110 1351 5302 28556

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 0 146 1727 1260
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 2 0
VCDI 0 0 0 0 0 146 1725 1260

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 0 571 3263 6148
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 0 571 3263 6148

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 1588 32 89 5 0 0 0
OW 0 88 29 239 55 0 0 0
VODI 0 0 0 132 293 12 0 0
ODI 0 0 0 7 258 138 0 0
CDI 0 0 0 0 30 347 90 0
VCDI 0 0 0 0 0 203 1717 302
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1527 36 157 68 0 0 0
OW 0 143 23 162 92 8 0 0
VODI 0 6 2 143 263 52 0 0
ODI 0 0 0 5 145 158 7 0
CDI 0 0 0 0 65 204 63 0
VCDI 0 0 0 0 8 278 1737 302

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 41 0 0
VCDI 0 0 0 0 0 29 830 6346
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 69 830 6346

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 6 16 0
VCDI 0 0 0 0 0 319 3218 1767
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 17 24 1
VCDI 0 0 0 0 0 308 3210 1766

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1238 1665 18 26 5 0 0 0
OW 3 141 22 152 56 0 0 0
VODI 0 29 10 187 184 1 0 0
ODI 0 0 1 62 571 31 0 0
CDI 0 0 0 0 238 373 3 0
VCDI 0 0 0 0 2 823 490 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1222 1255 17 38 24 0 0 0
OW 19 322 5 92 59 0 0 0
VODI 0 257 26 179 223 9 0 0
ODI 0 1 3 99 321 30 0 0
CDI 0 0 0 19 322 152 0 0
VCDI 0 0 0 0 107 1037 493 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 7612 2896 38 144 135 3 0 0
OW 0 4 0 14 76 13 0 0
VODI 0 0 0 0 41 35 0 0
ODI 0 0 0 0 35 80 0 0
CDI 0 0 0 0 28 138 0 0
VCDI 0 0 0 0 0 39 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7612 2888 36 151 226 25 0 0
OW 0 11 2 7 37 44 0 0
VODI 0 1 0 0 22 65 0 0
ODI 0 0 0 0 3 49 0 0
CDI 0 0 0 0 22 53 0 0
VCDI 0 0 0 0 5 72 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 5888 2450 2 22 1 0 0 0
OW 0 95 12 49 4 0 0 0
VODI 0 39 13 95 26 0 0 0
ODI 0 7 7 73 72 1 0 0
CDI 0 0 1 45 166 93 4 0
VCDI 0 0 0 4 129 1021 1377 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5888 2252 1 12 1 0 0 0
OW 0 151 1 19 2 0 0 0
VODI 0 118 10 46 9 0 0 0
ODI 0 58 15 66 29 0 0 0
CDI 0 12 8 105 133 30 4 0
VCDI 0 0 0 40 224 1085 1377 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 9129 2606 29 156 131 85 0 0
OW 0 38 15 80 34 18 0 0
VODI 0 1 3 78 72 19 0 0
ODI 0 0 0 8 90 16 0 0
CDI 0 0 0 0 87 120 0 0
VCDI 0 0 0 0 3 170 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9129 2590 38 223 186 118 0 0
OW 0 41 4 41 57 18 0 0
VODI 0 14 5 35 64 68 0 0
ODI 0 0 0 21 44 89 0 0
CDI 0 0 0 2 58 83 0 0
VCDI 0 0 0 0 8 52 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 0 1031 15 41 19 0 0 0
OW 0 28 10 73 14 0 0 0
VODI 0 0 1 93 49 0 0 0
ODI 0 0 0 20 133 20 0 0
CDI 0 0 0 0 93 104 0 0
VCDI 0 0 0 0 37 849 2144 1029
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 964 6 25 17 0 0 0
OW 0 57 7 16 15 0 0 0
VODI 0 36 8 68 32 3 0 0
ODI 0 2 5 64 68 19 0 0
CDI 0 0 0 43 56 58 0 0
VCDI 0 0 0 11 157 893 2144 1029

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 1011 47 159 49 0 0 0
OW 0 176 19 117 115 6 0 0
VODI 0 25 9 82 323 62 0 0
ODI 0 4 1 17 400 428 0 0
CDI 0 0 0 1 447 1032 0 0
VCDI 0 0 0 30 205 2486 1336 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 898 54 238 206 26 0 0
OW 0 163 11 88 243 71 0 0
VODI 0 121 5 22 145 272 0 0
ODI 0 34 6 17 63 340 0 0
CDI 0 0 0 3 308 667 17 0
VCDI 0 0 0 38 574 2638 1319 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 16229 3224 16 50 4 0 0 0
OW 0 71 16 80 31 0 0 0
VODI 0 13 7 79 132 0 0 0
ODI 0 2 0 15 170 13 0 0
CDI 0 0 0 8 14 12 0 0
VCDI 0 0 0 12 11 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 16226 3260 29 132 65 0 0 0
OW 3 34 7 54 94 0 0 0
VODI 0 14 3 25 133 18 0 0
ODI 0 2 0 7 44 7 0 0
CDI 0 0 0 13 8 0 0 0
VCDI 0 0 0 13 18 0 0 0


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