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: 2021-08-12

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-08-16

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 96 3359 26 57 11 0 0 0
OW 0 746 101 275 21 0 0 0
VODI 0 149 66 2052 396 0 0 0
ODI 0 31 5 369 3976 302 0 0
CDI 0 7 1 5 1049 8711 2209 0
VCDI 0 0 0 0 0 2036 10078 768
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 96 3046 31 139 8 0 0 0
OW 0 747 65 283 94 0 0 0
VODI 0 429 84 1427 636 87 0 0
ODI 0 59 17 871 3061 1297 349 0
CDI 0 11 2 38 1638 7413 8222 72
VCDI 0 0 0 0 16 2252 3716 696

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 13 669 14 16 2 0 0 0
OW 0 29 5 38 7 0 0 0
VODI 0 6 4 29 28 0 0 0
ODI 0 10 1 16 98 15 0 0
CDI 0 0 0 30 113 583 280 0
VCDI 0 54 7 72 113 244 637 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13 640 14 8 1 0 0 0
OW 0 27 5 27 5 0 0 0
VODI 0 13 2 38 23 9 0 0
ODI 0 16 0 24 101 45 10 0
CDI 0 17 2 12 96 540 677 0
VCDI 0 55 8 92 135 248 230 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 0 1639 39 208 13 0 0 0
OW 0 28 12 187 36 0 0 0
VODI 0 2 3 609 502 4 0 0
ODI 0 0 0 34 2411 103 0 0
CDI 0 0 0 0 475 3571 43 0
VCDI 0 0 0 0 0 32 31 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 1602 38 270 20 0 0 0
OW 0 61 11 214 89 0 0 0
VODI 0 6 5 268 847 0 0 0
ODI 0 0 0 286 1644 89 0 0
CDI 0 0 0 0 817 3465 65 0
VCDI 0 0 0 0 20 156 9 0

Chuckchi Sea:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1733 1877 15 21 0 0 0 0
OW 0 76 13 101 0 0 0 0
VODI 0 9 6 424 74 0 0 0
ODI 0 0 0 59 1246 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 1733 1829 16 33 0 0 0 0
OW 0 71 9 158 1 0 0 0
VODI 0 62 9 297 250 0 0 0
ODI 0 0 0 117 1041 0 0 0
CDI 0 0 0 0 28 0 0 0
VCDI 0 0 0 0 0 0 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 2194 3166 34 130 0 0 0 0
OW 0 501 52 258 0 0 0 0
VODI 0 9 12 523 59 0 0 0
ODI 0 0 0 7 274 16 0 0
CDI 0 0 0 0 1 10 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 2180 3154 38 207 0 0 0 0
OW 14 467 30 308 6 0 0 0
VODI 0 55 30 403 222 0 0 0
ODI 0 0 0 0 106 26 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 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 3495 1809 4 8 0 0 0 0
OW 0 4 1 5 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 3495 1808 4 13 0 0 0 0
OW 0 5 1 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

Kara Sea:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 4114 1196 8 30 0 0 0 0
OW 0 47 17 97 6 0 0 0
VODI 0 1 3 111 110 1 0 0
ODI 0 0 0 3 355 36 0 0
CDI 0 0 0 0 22 174 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 4114 1241 22 127 33 0 0 0
OW 0 3 6 95 108 0 0 0
VODI 0 0 0 19 175 5 0 0
ODI 0 0 0 0 170 93 0 0
CDI 0 0 0 0 7 113 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 10929 402 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 10929 402 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

Greenland Basin:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 9887 1509 15 70 0 0 0 0
OW 0 43 0 60 0 0 0 0
VODI 0 12 9 55 18 0 0 0
ODI 0 0 0 4 14 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 9887 1482 12 90 2 0 0 0
OW 0 51 6 52 14 0 0 0
VODI 0 31 6 47 16 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

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 5449 293 3 33 0 0 0 0
OW 0 11 1 0 0 0 0 0
VODI 0 0 2 11 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 5449 288 3 33 0 0 0 0
OW 0 14 1 1 0 0 0 0
VODI 0 2 2 10 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

Hudson Bay:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 6479 1960 16 74 0 0 0 0
OW 0 14 6 32 0 0 0 0
VODI 0 0 0 6 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 6479 1964 17 95 0 0 0 0
OW 0 10 5 15 0 0 0 0
VODI 0 0 0 2 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 110 2 2 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 110 2 2 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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