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: 2022-01-13

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-01-17

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 0 206 12 45 2 0 0 0
OW 0 17 3 48 10 0 0 0
VODI 0 4 2 28 51 1 0 0
ODI 0 0 1 16 50 3 0 0
CDI 0 0 0 8 54 12 1 0
VCDI 0 12 2 60 179 1039 5162 29874
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 188 10 24 0 0 0 0
OW 0 23 1 42 3 0 0 0
VODI 0 13 3 29 29 0 0 0
ODI 0 3 3 17 38 2 0 0
CDI 0 0 1 22 40 9 6 0
VCDI 0 12 2 71 236 1044 5157 29874

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 74 206 2853
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 74 206 2853

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 2 0 0
VCDI 0 0 0 0 0 126 983 4543
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 2 0 0
VCDI 0 0 0 0 0 126 983 4543

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 1
VCDI 0 0 0 0 0 0 0 7245
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 5
VCDI 0 0 0 0 0 0 0 7241

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 1 0 0
CDI 0 0 0 0 5 52 6 5
VCDI 0 0 0 0 7 414 2295 2541
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 6 65 6 5
VCDI 0 0 0 0 6 398 2295 2541

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 29 2 0 0 0 0 0
VODI 0 19 1 4 0 0 0 0
ODI 0 18 0 4 0 4 0 0
CDI 0 17 0 10 1 11 27 0
VCDI 0 67 2 113 141 320 4675 866
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 7 0 0 0 0 0 0
ODI 0 25 1 1 0 13 6 0
CDI 0 19 2 6 9 12 41 5
VCDI 0 99 2 124 133 310 4655 861

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2745 3839 62 225 52 1 0 0
OW 0 118 16 131 87 11 0 0
VODI 0 58 6 107 145 15 0 0
ODI 0 23 2 32 170 38 0 0
CDI 0 15 4 20 126 239 33 0
VCDI 0 44 3 40 116 536 2272 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2745 3813 64 250 88 4 0 0
OW 0 92 10 107 79 9 0 0
VODI 0 67 9 82 162 26 0 0
ODI 0 34 1 38 142 69 0 0
CDI 0 24 2 25 88 177 35 0
VCDI 0 67 7 53 137 555 2270 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 5180 3348 16 37 0 0 0 0
OW 0 153 9 43 11 0 0 0
VODI 0 70 10 76 44 0 0 0
ODI 0 29 5 50 68 2 0 0
CDI 0 13 4 42 119 40 0 0
VCDI 0 0 0 7 170 604 1546 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5180 3248 13 39 3 0 0 0
OW 0 144 7 27 10 0 0 0
VODI 0 99 9 46 28 0 0 0
ODI 0 45 5 50 41 2 0 0
CDI 0 49 3 40 74 15 0 0
VCDI 0 28 7 53 256 629 1546 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 8126 3315 41 211 202 71 41 0
OW 0 76 7 33 26 11 19 0
VODI 0 27 8 57 69 17 28 0
ODI 0 1 1 22 85 64 26 0
CDI 0 0 0 0 57 154 16 0
VCDI 0 0 0 0 0 102 75 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8126 3285 42 234 240 98 68 0
OW 0 75 4 8 46 61 42 0
VODI 0 50 6 22 13 34 24 0
ODI 0 9 5 43 44 59 11 0
CDI 0 0 0 16 80 40 32 0
VCDI 0 0 0 0 16 127 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 0 415 12 51 0 0 0 0
OW 0 9 4 48 12 0 0 0
VODI 0 1 0 43 51 0 0 0
ODI 0 0 0 18 47 8 0 0
CDI 0 0 0 8 71 29 0 0
VCDI 0 0 0 8 176 829 3216 747
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 374 9 47 2 0 0 0
OW 0 33 5 42 8 0 0 0
VODI 0 15 2 40 36 0 0 0
ODI 0 3 0 18 45 4 0 0
CDI 0 0 0 16 60 19 1 0
VCDI 0 0 0 13 206 843 3215 747

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 14 25 0 0
VCDI 0 0 0 0 55 1222 3941 3330
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 16 28 0 0
VCDI 0 0 0 0 53 1219 3941 3330

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12986 3854 47 102 3 0 0 0
OW 0 78 11 128 27 0 0 0
VODI 0 51 9 160 155 2 0 0
ODI 0 0 0 48 293 54 0 0
CDI 0 0 0 0 242 93 0 0
VCDI 0 0 0 0 37 905 924 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12986 3837 44 106 11 2 0 0
OW 0 89 13 106 33 11 0 0
VODI 0 45 4 130 150 17 0 0
ODI 0 12 6 74 190 26 0 0
CDI 0 0 0 22 266 69 0 0
VCDI 0 0 0 0 107 929 924 0


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