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: 2020-03-19

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-03-23

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 0 0 0 0 0 0 0
VODI 0 0 0 0 0 0 2 0
ODI 0 0 0 0 0 0 10 0
CDI 0 0 0 0 0 27 63 0
VCDI 0 0 0 0 0 372 3595 32833
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 14 0
ODI 0 0 0 0 0 3 33 0
CDI 0 0 0 0 0 10 54 1
VCDI 0 0 0 0 0 386 3569 32832

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 26 192 2915
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 26 192 2915

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 3 0
CDI 0 0 0 0 0 7 50 0
VCDI 0 0 0 0 0 5 676 9241
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 12 0
VCDI 0 0 0 0 0 9 717 9241

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 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 30 2 0 0
ODI 0 0 0 0 96 40 15 0
CDI 0 0 0 0 1 133 82 6
VCDI 0 0 0 0 0 41 1679 3529
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 34 24 0
ODI 0 0 0 0 36 18 63 0
CDI 0 0 0 0 68 14 36 0
VCDI 0 0 0 0 18 150 1653 3535

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 9 58 53
VCDI 0 0 0 0 0 253 1969 4904
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 10 59 68
VCDI 0 0 0 0 0 252 1968 4889

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 20 3 0
VCDI 0 0 0 0 0 231 2789 2283
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 13 2 0
VCDI 0 0 0 0 0 238 2790 2283

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 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 1 3 0 0 0 0
ODI 0 0 1 15 89 54 0 0
CDI 0 0 0 13 40 142 8 11
VCDI 0 0 0 0 3 290 3043 2618
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 12 11 0 0
CDI 0 0 1 3 19 93 0 23
VCDI 0 0 1 28 101 382 3051 2606

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3096 3385 60 320 72 6 0 0
OW 0 97 9 177 130 11 0 0
VODI 0 23 6 86 225 27 0 0
ODI 0 1 1 21 182 102 0 0
CDI 0 0 0 5 162 232 7 0
VCDI 0 0 0 0 42 1096 1750 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3096 3331 53 324 112 12 0 0
OW 0 104 13 123 127 14 0 0
VODI 0 47 4 93 191 33 0 0
ODI 0 19 3 39 163 74 0 0
CDI 0 5 3 23 139 213 3 0
VCDI 0 0 0 7 81 1128 1754 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 4654 3316 21 82 18 29 12 0
OW 0 65 16 130 22 9 11 0
VODI 0 13 2 136 104 8 14 0
ODI 0 0 2 21 180 12 7 0
CDI 0 0 0 0 172 92 0 0
VCDI 0 0 0 0 41 758 1644 105
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4654 3301 24 110 31 33 16 0
OW 0 80 11 96 31 17 18 0
VODI 0 12 4 109 82 15 10 0
ODI 0 1 2 51 114 14 0 0
CDI 0 0 0 3 196 28 0 2
VCDI 0 0 0 0 83 801 1644 103

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8525 3231 36 121 85 26 2 0
OW 0 87 14 65 9 7 1 0
VODI 0 23 12 81 88 4 0 0
ODI 0 0 3 32 85 37 0 0
CDI 0 0 0 18 82 116 61 0
VCDI 0 0 0 0 2 18 117 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8525 3202 36 141 92 28 2 0
OW 0 84 18 73 74 8 1 0
VODI 0 34 5 39 80 52 0 0
ODI 0 13 3 24 24 73 27 0
CDI 0 8 3 29 55 41 123 0
VCDI 0 0 0 11 26 6 28 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 1 2 8 4 0 0 0
OW 0 12 1 4 15 0 0 0
VODI 0 24 1 11 17 8 0 0
ODI 0 13 1 20 14 25 0 0
CDI 0 1 1 18 54 46 3 0
VCDI 0 0 0 4 71 288 2890 2246
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 1 7 3 0 0 0
OW 0 2 1 1 14 0 0 0
VODI 0 5 1 5 13 5 0 0
ODI 0 19 0 8 7 20 0 0
CDI 0 20 1 22 11 25 0 0
VCDI 0 5 2 22 127 317 2893 2246

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 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 6 54 24 2
CDI 0 0 0 0 29 219 75 22
VCDI 0 0 0 0 49 506 4176 3425
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 8 46 29 3
CDI 0 0 0 0 6 174 77 17
VCDI 0 0 0 0 70 559 4169 3429

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10343 4754 63 371 75 0 0 0
OW 0 42 17 229 221 0 0 0
VODI 0 5 4 152 493 75 0 0
ODI 0 0 0 13 567 160 0 0
CDI 0 0 0 0 394 394 21 0
VCDI 0 0 0 0 414 868 534 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10343 4787 76 532 173 7 0 0
OW 0 13 8 148 220 35 0 0
VODI 0 1 0 72 434 123 0 0
ODI 0 0 0 13 383 131 0 0
CDI 0 0 0 0 417 270 18 0
VCDI 0 0 0 0 537 931 537 0


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