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: 2020-05-07

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-05-11

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 0 0 0 0 0 0 0
OW 0 1 1 3 0 0 0 0
VODI 0 14 2 5 0 13 0 0
ODI 0 0 2 7 2 24 31 0
CDI 0 0 0 15 48 47 65 0
VCDI 0 0 0 2 119 521 4952 31028
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 1 0 0
OW 0 0 0 0 0 19 2 0
VODI 0 3 2 4 0 12 23 0
ODI 0 7 0 5 3 8 31 0
CDI 0 5 2 12 33 30 56 0
VCDI 0 0 1 11 133 535 4936 31028

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 15 1 8 0
VCDI 0 0 0 0 66 164 530 2349
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 5 0 7 0
VCDI 0 0 0 0 76 165 531 2349

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 8 12 0 0
ODI 0 0 0 0 41 23 0 0
CDI 0 0 0 0 72 129 25 0
VCDI 0 0 0 0 11 322 2981 6358
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 5 9 0 0
ODI 0 0 0 0 37 26 0 0
CDI 0 0 0 0 74 116 42 0
VCDI 0 0 0 0 16 335 2964 6358

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 1 8 0
OW 0 0 0 4 21 3 16 0
VODI 0 0 0 7 40 7 6 0
ODI 0 0 0 11 93 33 7 0
CDI 0 0 0 0 158 173 44 0
VCDI 0 0 0 0 4 191 2879 1948
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 3 14 4 17 0
OW 0 0 0 6 24 6 16 0
VODI 0 0 0 7 33 7 22 0
ODI 0 0 0 4 52 41 21 0
CDI 0 0 0 2 159 149 112 0
VCDI 0 0 0 0 34 201 2772 1948

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 13 0 0
ODI 0 0 0 1 37 51 2 0
CDI 0 0 0 7 115 203 48 0
VCDI 0 0 0 0 252 1540 3876 1101
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 19 0 0
ODI 0 0 0 0 17 58 11 0
CDI 0 0 0 8 92 117 102 0
VCDI 0 0 0 0 291 1613 3813 1101

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 9 3 2 0
CDI 0 0 0 0 29 73 32 0
VCDI 0 0 0 0 104 758 3374 942
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 3 12 0 0
CDI 0 0 0 0 28 53 64 22
VCDI 0 0 0 0 111 769 3344 920

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 201 7 11 0 0 0 0
OW 0 18 14 112 10 0 0 0
VODI 0 11 8 175 237 4 0 0
ODI 0 0 1 35 434 118 5 0
CDI 0 0 0 27 233 845 47 0
VCDI 0 0 0 10 116 1765 1887 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 189 2 22 3 0 0 0
OW 0 28 17 72 32 2 0 0
VODI 0 3 0 132 165 29 4 0
ODI 0 9 8 57 297 61 0 0
CDI 0 1 3 70 326 594 36 0
VCDI 0 0 0 17 207 2046 1899 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 3771 3582 41 116 25 0 0 0
OW 0 127 27 132 41 0 0 0
VODI 0 6 9 209 181 1 0 0
ODI 0 0 0 34 569 58 0 0
CDI 0 0 0 0 159 1265 18 0
VCDI 0 0 0 0 12 592 356 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3771 3694 65 246 78 0 0 0
OW 0 14 8 90 132 0 0 0
VODI 0 1 3 77 302 23 0 0
ODI 0 5 1 37 273 140 0 0
CDI 0 1 0 17 115 577 9 0
VCDI 0 0 0 24 87 1176 365 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 4017 3485 38 456 53 4 0 0
OW 0 27 13 134 62 17 0 0
VODI 0 18 2 97 162 18 0 0
ODI 0 8 3 22 460 81 6 0
CDI 0 0 1 21 183 320 78 0
VCDI 0 0 0 0 151 686 1073 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4017 3442 40 460 117 17 0 0
OW 0 46 8 93 89 21 0 0
VODI 0 26 2 87 276 40 8 0
ODI 0 23 3 41 150 107 26 0
CDI 0 1 4 39 122 255 63 0
VCDI 0 0 0 10 317 686 1060 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 9315 3274 23 194 28 0 0 0
OW 0 5 0 21 50 0 0 0
VODI 0 0 0 0 49 0 0 0
ODI 0 0 0 0 29 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 9315 3279 23 215 101 0 0 0
OW 0 0 0 0 42 0 0 0
VODI 0 0 0 0 13 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

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 611 7 4 0 0 0 0
OW 0 41 13 54 0 0 0 0
VODI 0 0 4 91 43 0 0 0
ODI 0 0 0 35 136 0 0 0
CDI 0 0 0 1 183 179 1 0
VCDI 0 0 0 0 114 642 2698 946
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 545 4 1 0 0 0 0
OW 0 73 7 12 0 0 0 0
VODI 0 33 7 41 11 0 0 0
ODI 0 1 6 88 44 0 0 0
CDI 0 0 0 43 198 146 12 0
VCDI 0 0 0 0 223 675 2687 946

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 144 8 32 3 0 0 0
OW 0 81 13 62 28 0 0 0
VODI 0 10 4 118 181 14 0 0
ODI 0 5 2 25 360 114 8 0
CDI 0 2 1 17 386 343 61 0
VCDI 0 0 0 12 321 1296 3417 1519
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 161 8 75 17 0 0 0
OW 0 56 7 37 23 2 0 0
VODI 0 16 10 69 137 34 1 0
ODI 0 7 1 52 214 124 17 0
CDI 0 2 2 14 410 234 80 0
VCDI 0 0 0 19 478 1373 3388 1519

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14463 3832 25 155 38 0 0 0
OW 0 24 25 167 107 1 0 0
VODI 0 2 2 119 286 34 0 0
ODI 0 0 0 4 127 126 10 0
CDI 0 0 0 0 20 147 105 0
VCDI 0 0 0 0 0 162 228 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14463 3800 21 285 206 17 0 0
OW 0 55 25 87 142 42 12 0
VODI 0 3 6 66 126 65 8 0
ODI 0 0 0 7 74 62 82 0
CDI 0 0 0 0 27 98 80 0
VCDI 0 0 0 0 3 186 161 0


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