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: 2021-01-28

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-02-01

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 0 373 9 34 39 2 0 0
OW 0 21 4 22 27 11 0 0
VODI 0 5 2 43 22 15 0 0
ODI 0 0 1 22 38 18 0 0
CDI 0 0 0 6 56 24 0 0
VCDI 0 0 0 1 77 550 4615 30865
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 347 7 35 58 5 0 0
OW 0 27 4 14 19 11 0 0
VODI 0 17 2 37 20 19 0 0
ODI 0 7 1 21 36 19 0 0
CDI 0 1 2 15 45 20 7 0
VCDI 0 0 0 6 81 546 4608 30865

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 1
CDI 0 0 0 0 0 0 0 1
VCDI 0 0 0 0 0 4 137 2990
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 4 137 2992

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 0 0 9982
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 0 0 9982

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 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 14 12 0
VCDI 0 0 0 0 0 169 2275 3184
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 4 0 0
VCDI 0 0 0 0 0 179 2287 3184

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 3 0 0
VCDI 0 0 0 0 0 38 852 6353
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 0 0
VCDI 0 0 0 0 0 38 852 6353

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 1
VCDI 0 0 0 0 0 0 5 5320
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 0 5 5321

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 78 0 0 0 0 0 0
OW 0 24 0 0 0 0 0 0
VODI 0 24 0 0 0 0 0 0
ODI 0 17 2 3 0 0 0 0
CDI 0 17 1 8 0 40 11 1
VCDI 0 12 1 54 126 895 4310 707
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 61 0 0 0 0 0 0
OW 0 23 0 0 0 0 0 0
VODI 0 29 0 0 0 0 0 0
ODI 0 21 0 0 0 2 0 0
CDI 0 18 2 4 0 39 9 0
VCDI 0 20 2 61 126 894 4312 708

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2796 4168 58 254 65 1 0 0
OW 0 82 23 187 77 3 0 0
VODI 0 24 9 137 176 16 0 0
ODI 0 13 0 42 197 63 0 0
CDI 0 9 0 40 134 245 0 0
VCDI 0 3 1 39 326 906 1237 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2796 4117 56 297 115 5 0 0
OW 0 83 19 127 82 27 1 0
VODI 0 46 9 117 130 52 8 0
ODI 0 24 4 42 124 61 10 0
CDI 0 17 2 35 126 205 20 0
VCDI 0 12 1 81 398 884 1198 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 4999 3249 14 38 3 0 0 0
OW 0 120 13 63 4 0 0 0
VODI 0 66 13 101 38 0 0 0
ODI 0 20 4 44 84 3 0 0
CDI 0 22 2 31 89 90 6 0
VCDI 0 3 1 46 138 297 1923 172
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4999 3080 12 50 4 0 0 0
OW 0 195 7 35 8 0 0 0
VODI 0 127 15 68 41 0 0 0
ODI 0 29 10 55 60 7 0 0
CDI 0 31 1 48 67 57 0 0
VCDI 0 18 2 67 176 326 1929 172

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8159 3183 23 65 52 14 0 0
OW 0 103 17 45 9 4 0 0
VODI 0 35 8 83 41 1 0 0
ODI 0 10 6 32 98 14 0 0
CDI 0 0 1 27 110 122 2 0
VCDI 0 0 0 0 31 261 432 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8159 3128 29 76 50 14 0 0
OW 0 100 8 61 19 4 0 0
VODI 0 60 6 39 79 11 0 0
ODI 0 30 3 28 68 46 1 0
CDI 0 13 9 33 50 148 56 0
VCDI 0 0 0 15 75 193 377 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 0 158 11 50 11 0 0 0
OW 0 1 4 36 30 2 0 0
VODI 0 0 0 28 54 8 0 0
ODI 0 0 0 10 42 22 0 0
CDI 0 0 0 0 33 33 0 0
VCDI 0 0 0 0 26 585 3072 1587
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 153 12 45 9 0 0 0
OW 0 4 2 35 28 4 0 0
VODI 0 2 1 27 54 9 0 0
ODI 0 0 0 13 38 21 0 0
CDI 0 0 0 4 36 37 0 0
VCDI 0 0 0 0 31 579 3072 1587

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 0 2 0
VCDI 0 0 0 0 0 280 1576 6729
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 3 0
VCDI 0 0 0 0 0 280 1575 6729

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13519 3931 43 56 0 0 0 0
OW 0 53 21 145 4 0 0 0
VODI 0 25 6 123 98 0 0 0
ODI 0 2 1 76 147 28 0 0
CDI 0 0 0 13 178 71 10 0
VCDI 0 0 0 0 219 806 634 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13519 3811 30 22 0 0 0 0
OW 0 142 29 113 1 0 0 0
VODI 0 38 7 136 85 1 0 0
ODI 0 11 2 59 90 13 0 0
CDI 0 9 3 74 161 71 7 0
VCDI 0 0 0 9 309 820 637 0


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