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: 2021-09-30

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-10-04

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 328 3000 45 190 23 0 0 0
OW 0 175 34 231 114 0 0 0
VODI 0 36 21 262 299 5 0 0
ODI 0 1 4 80 502 76 0 0
CDI 0 0 0 17 312 974 63 0
VCDI 0 0 0 0 19 1364 14134 14593
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 328 2518 29 111 38 0 0 0
OW 0 446 31 206 173 6 0 0
VODI 0 223 27 260 336 40 5 0
ODI 0 25 17 118 307 158 13 0
CDI 0 0 0 83 323 712 233 0
VCDI 0 0 0 2 92 1503 13946 14593

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 0 867 20 42 0 0 0 0
OW 0 117 8 49 5 0 0 0
VODI 0 36 11 118 15 0 0 0
ODI 0 0 0 49 46 0 0 0
CDI 0 0 0 10 161 255 7 0
VCDI 0 0 0 11 96 525 685 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 791 20 65 4 0 0 0
OW 0 128 1 40 11 0 0 0
VODI 0 91 12 46 2 0 0 0
ODI 0 10 5 57 9 0 0 0
CDI 0 0 1 58 87 114 8 0
VCDI 0 0 0 13 210 666 684 0

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 175 2125 30 123 27 0 0 0
OW 0 65 20 107 65 0 0 0
VODI 0 13 8 93 143 10 34 0
ODI 0 0 0 14 182 103 67 0
CDI 0 0 0 0 39 798 482 0
VCDI 0 0 0 0 0 252 3339 1668
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 175 2119 39 212 157 12 0 0
OW 0 73 8 46 99 49 0 0
VODI 0 11 11 78 118 203 3 0
ODI 0 0 0 1 74 418 285 0
CDI 0 0 0 0 8 475 1992 0
VCDI 0 0 0 0 0 6 1642 1668

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1739 2178 27 55 1 0 0 0
OW 0 76 41 211 35 3 0 0
VODI 0 0 2 156 123 30 0 0
ODI 0 0 0 3 292 99 0 0
CDI 0 0 0 0 6 540 24 0
VCDI 0 0 0 0 0 5 8 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1739 2132 44 140 24 10 0 0
OW 0 117 22 157 28 49 0 0
VODI 0 5 4 120 175 72 14 0
ODI 0 0 0 8 170 138 0 0
CDI 0 0 0 0 60 405 18 0
VCDI 0 0 0 0 0 3 0 0

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2060 3198 11 22 0 0 0 0
OW 4 265 41 177 18 0 0 0
VODI 0 32 12 280 249 7 0 0
ODI 0 0 0 16 234 143 0 0
CDI 0 0 0 0 27 403 10 0
VCDI 0 0 0 0 0 20 17 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1871 3313 34 221 140 18 0 0
OW 193 136 22 164 144 29 0 0
VODI 0 41 3 81 155 104 0 0
ODI 0 5 5 20 47 138 0 0
CDI 0 0 0 9 42 249 21 0
VCDI 0 0 0 0 0 35 6 0

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2941 2337 5 28 0 0 0 0
OW 0 2 0 5 0 0 0 0
VODI 0 0 0 8 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2941 2254 3 5 0 0 0 0
OW 0 47 1 24 0 0 0 0
VODI 0 38 1 12 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 0

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4288 1632 9 29 0 0 0 0
OW 0 30 7 49 0 0 0 0
VODI 0 0 2 111 23 0 0 0
ODI 0 0 0 10 121 7 0 0
CDI 0 0 0 0 13 0 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4288 1509 7 29 0 0 0 0
OW 0 135 5 27 1 0 0 0
VODI 0 18 6 83 41 0 0 0
ODI 0 0 0 58 86 7 0 0
CDI 0 0 0 2 29 0 0 0
VCDI 0 0 0 0 0 0 0 0

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11092 238 1 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11092 238 1 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 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 9606 1416 20 92 68 0 0 0
OW 1 4 0 32 50 2 0 0
VODI 0 0 0 3 73 8 0 0
ODI 0 0 0 0 30 33 0 0
CDI 0 0 0 0 3 141 31 0
VCDI 0 0 0 0 0 11 72 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9607 1420 20 107 97 0 0 0
OW 0 0 0 13 68 7 0 0
VODI 0 0 0 7 51 59 0 0
ODI 0 0 0 0 8 77 6 0
CDI 0 0 0 0 0 52 91 0
VCDI 0 0 0 0 0 0 6 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 12988 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12988 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 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 4822 832 11 38 2 0 0 0
OW 0 3 0 3 0 0 0 0
VODI 0 0 0 0 2 0 0 0
ODI 0 0 0 0 1 0 0 0
CDI 0 0 0 0 54 4 0 0
VCDI 0 0 0 0 31 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4822 826 11 39 2 0 0 0
OW 0 9 0 2 0 0 0 0
VODI 0 0 0 0 2 0 0 0
ODI 0 0 0 0 1 0 0 0
CDI 0 0 0 0 5 0 0 0
VCDI 0 0 0 0 80 4 0 0

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7451 1125 4 7 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7451 1125 4 7 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 0

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 20095 109 2 3 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 20095 109 2 3 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 0


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