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: 2022-01-27

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-01-31

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 0 129 10 75 32 2 0 0
OW 0 3 0 10 45 16 2 0
VODI 0 0 0 10 33 35 8 0
ODI 0 0 0 6 107 57 18 0
CDI 0 0 0 3 196 64 39 0
VCDI 0 0 0 0 326 403 4437 30836
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 124 9 69 34 2 0 0
OW 0 7 1 13 33 15 0 0
VODI 0 1 0 8 28 26 5 0
ODI 0 0 0 5 17 20 13 0
CDI 0 0 0 4 18 17 23 0
VCDI 0 0 0 5 609 497 4463 30836

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 1 94 3038
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 1 94 3038

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 0 0 0
VCDI 0 0 0 0 0 0 0 5654
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 5654

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 0
VCDI 0 0 0 0 0 0 0 7246
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

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 4 26 0 3
VCDI 0 0 0 0 95 583 1460 3155
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 4 29 2 3
VCDI 0 0 0 0 95 580 1458 3155

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 83 0 0 0 0 0 0
OW 0 34 0 0 0 0 0 0
VODI 0 36 0 0 0 0 0 0
ODI 0 41 4 11 5 7 0 0
CDI 0 41 5 21 26 120 17 0
VCDI 0 144 10 95 208 809 4610 4
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 16 0 0 0 0 0 0
OW 0 14 0 0 0 0 0 0
VODI 0 35 0 0 0 0 0 0
ODI 0 37 0 0 1 28 0 0
CDI 0 52 1 0 22 191 16 0
VCDI 0 225 18 127 216 717 4611 4

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2863 4055 44 130 25 0 0 0
OW 0 125 36 180 61 0 0 0
VODI 0 50 16 186 177 13 0 0
ODI 0 5 2 74 219 70 1 0
CDI 0 1 0 3 146 305 42 0
VCDI 0 0 0 1 72 1122 1307 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2863 3981 44 152 14 0 0 0
OW 0 152 27 126 48 0 0 0
VODI 0 73 22 135 126 0 0 0
ODI 0 16 3 101 161 54 8 0
CDI 0 10 1 37 163 206 29 0
VCDI 0 4 1 23 188 1250 1313 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 5031 3405 17 26 0 0 0 0
OW 0 104 12 72 2 0 0 0
VODI 0 46 6 100 38 0 0 0
ODI 0 20 3 63 76 0 0 0
CDI 0 0 0 35 167 22 2 0
VCDI 0 0 0 2 121 631 1598 97
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5031 3276 14 19 0 0 0 0
OW 0 105 10 41 1 0 0 0
VODI 0 106 7 60 13 0 0 0
ODI 0 47 3 59 42 0 0 0
CDI 0 24 2 76 83 1 0 0
VCDI 0 17 2 43 265 652 1600 97

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7350 3355 50 285 220 51 3 0
OW 0 31 15 82 59 15 6 0
VODI 0 4 2 71 118 25 10 0
ODI 0 0 0 28 77 57 8 0
CDI 0 0 0 5 95 152 14 0
VCDI 0 0 0 0 43 448 309 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7350 3333 57 341 298 77 5 0
OW 0 32 3 49 69 34 11 0
VODI 0 21 5 31 53 80 12 0
ODI 0 4 2 24 44 71 10 0
CDI 0 0 0 23 60 121 24 0
VCDI 0 0 0 3 88 365 288 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 0 189 18 88 0 0 0 0
OW 0 5 2 62 1 0 0 0
VODI 0 2 1 55 22 0 0 0
ODI 0 0 0 27 52 0 0 0
CDI 0 0 0 15 74 1 0 0
VCDI 0 0 0 5 153 673 3159 1199
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 166 11 57 0 0 0 0
OW 0 24 3 47 0 0 0 0
VODI 0 6 7 66 6 0 0 0
ODI 0 0 0 41 36 0 0 0
CDI 0 0 0 25 65 2 1 0
VCDI 0 0 0 16 195 672 3158 1199

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 0 0
VCDI 0 0 0 0 0 526 4099 3962
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 0 526 4099 3962

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11014 4533 60 237 61 0 0 0
OW 0 38 13 155 57 0 0 0
VODI 0 0 0 93 191 0 0 0
ODI 0 0 0 19 218 14 0 0
CDI 0 0 0 0 163 84 0 0
VCDI 0 0 0 0 448 1998 777 36
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11014 4506 54 224 92 0 0 0
OW 0 62 16 117 80 0 0 0
VODI 0 3 3 118 134 8 0 0
ODI 0 0 0 32 158 38 0 0
CDI 0 0 0 13 156 85 0 0
VCDI 0 0 0 0 518 1965 777 36


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