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: 2022-02-24

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-02-28

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 12 148 71 2 0
OW 0 0 0 1 26 24 4 0
VODI 0 0 0 0 19 41 6 0
ODI 0 0 0 0 12 36 10 0
CDI 0 0 0 0 15 61 25 0
VCDI 0 0 0 0 257 695 3706 31731
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 6 146 90 7 0
OW 0 0 0 5 24 30 11 0
VODI 0 0 0 2 15 36 14 0
ODI 0 0 0 0 8 36 14 0
CDI 0 0 0 0 9 37 24 0
VCDI 0 0 0 0 275 699 3683 31731

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 50 733 2350
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 50 733 2350

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 4 0 0
CDI 0 0 0 0 2 38 43 12
VCDI 0 0 0 0 45 191 1829 7818
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 1 43 57 4
VCDI 0 0 0 0 46 190 1815 7826

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 0 14 5 0
ODI 0 0 0 0 0 31 19 0
CDI 0 0 0 0 0 61 17 0
VCDI 0 0 0 0 2 300 2184 3021
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 29 20 0
ODI 0 0 0 0 0 22 22 0
CDI 0 0 0 0 2 126 27 0
VCDI 0 0 0 0 0 229 2156 3021

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 2
VCDI 0 0 0 0 0 1 722 6521
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 15 6
VCDI 0 0 0 0 0 0 707 6517

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 9
VCDI 0 0 0 0 0 8 567 4742
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 6
VCDI 0 0 0 0 0 8 567 4745

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 65 10 15 0 0 0 0
OW 0 21 1 14 2 0 0 0
VODI 0 25 1 8 1 0 0 0
ODI 0 17 0 3 1 0 0 0
CDI 0 21 0 5 1 0 1 5
VCDI 0 178 14 89 190 385 2775 2483
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 50 8 5 0 0 0 0
OW 0 20 2 17 2 0 0 0
VODI 0 28 1 11 1 0 0 0
ODI 0 24 1 3 2 0 0 0
CDI 0 33 0 7 1 7 5 4
VCDI 0 172 14 91 189 378 2771 2484

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2850 3819 51 115 9 0 0 0
OW 0 96 33 230 42 0 0 0
VODI 0 36 13 225 199 5 0 0
ODI 0 12 5 67 265 16 0 0
CDI 0 7 1 12 260 185 3 0
VCDI 0 9 2 13 99 1154 1498 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2850 3740 40 112 7 0 0 0
OW 0 146 43 201 55 3 0 0
VODI 0 48 11 203 161 4 0 0
ODI 0 26 6 97 210 22 0 0
CDI 0 9 3 31 245 131 13 0
VCDI 0 10 2 18 196 1200 1488 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 4818 3386 22 141 28 0 0 0
OW 0 123 8 53 36 1 0 0
VODI 0 75 5 57 67 2 0 0
ODI 0 25 2 58 70 13 0 0
CDI 0 11 2 43 96 78 0 0
VCDI 0 0 0 32 161 422 1538 323
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4818 3264 24 152 37 0 0 0
OW 0 115 3 38 39 1 0 0
VODI 0 116 3 35 61 5 0 0
ODI 0 62 3 22 53 12 0 0
CDI 0 35 4 72 56 48 0 0
VCDI 0 28 2 65 212 450 1538 323

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8737 2894 23 100 73 15 0 0
OW 0 151 9 14 2 6 0 0
VODI 0 113 9 30 12 2 0 0
ODI 0 66 8 25 34 0 0 0
CDI 0 63 9 52 123 52 6 0
VCDI 0 4 7 51 102 113 83 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8737 2723 23 99 72 11 0 0
OW 0 172 4 10 6 10 0 0
VODI 0 138 9 20 11 2 0 0
ODI 0 103 8 25 25 3 0 0
CDI 0 97 7 33 49 20 2 0
VCDI 0 58 14 85 183 142 87 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 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 1 0 0 0
CDI 0 0 0 0 22 30 3 0
VCDI 0 0 0 0 107 495 3184 1961
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 20 0 0
CDI 0 0 0 0 25 30 3 0
VCDI 0 0 0 0 105 475 3184 1961

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 0 0 0 0
CDI 0 0 0 0 0 46 0 0
VCDI 0 0 0 0 0 309 2407 5825
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 45 0 0
VCDI 0 0 0 0 0 310 2407 5825

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9126 3511 48 379 311 77 0 0
OW 27 100 14 130 148 78 0 0
VODI 5 18 13 111 248 110 0 0
ODI 0 0 0 12 272 181 0 0
CDI 0 0 0 0 247 424 10 0
VCDI 0 0 0 0 88 2389 2132 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9135 3517 52 437 402 163 0 0
OW 17 66 7 90 169 118 0 0
VODI 6 43 10 69 190 177 3 0
ODI 0 3 6 24 169 158 9 0
CDI 0 0 0 12 215 299 12 0
VCDI 0 0 0 0 169 2344 2118 0


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