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: 2021-10-07

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-10-11

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 34 2175 43 160 32 0 0 0
OW 0 127 41 168 111 3 0 0
VODI 0 20 14 200 248 33 0 0
ODI 0 0 0 74 302 137 0 0
CDI 0 0 0 4 279 748 33 0
VCDI 0 0 0 0 24 1756 9039 21097
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 34 1894 31 175 88 7 0 0
OW 0 328 28 130 132 25 0 0
VODI 0 85 26 151 248 125 1 0
ODI 0 14 11 99 176 311 21 0
CDI 0 1 2 46 259 360 107 0
VCDI 0 0 0 5 93 1849 8943 21097

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 2 786 24 51 0 0 0 0
OW 0 73 4 40 6 0 0 0
VODI 0 16 5 74 24 0 0 0
ODI 0 0 0 8 64 24 0 0
CDI 0 0 0 0 66 258 5 0
VCDI 0 0 0 0 39 406 779 379
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 2 654 22 44 0 0 0 0
OW 0 171 5 52 9 0 0 0
VODI 0 40 4 48 55 19 0 0
ODI 0 10 2 25 39 35 0 0
CDI 0 0 0 4 46 177 25 11
VCDI 0 0 0 0 50 457 759 368

Beaufort Sea:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 163 1898 17 55 0 0 0 0
OW 0 114 24 145 20 0 0 0
VODI 0 24 11 181 128 0 0 0
ODI 0 0 0 17 313 40 0 0
CDI 0 0 0 0 87 645 20 0
VCDI 0 0 0 0 0 538 3809 1733
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 163 1770 26 157 20 0 0 0
OW 0 202 9 60 90 0 0 0
VODI 0 61 16 131 179 43 0 0
ODI 0 3 1 46 151 137 0 0
CDI 0 0 0 4 108 356 31 0
VCDI 0 0 0 0 0 687 3798 1733

Chuckchi Sea:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1506 1904 15 26 1 0 0 0
OW 0 79 24 99 18 0 0 0
VODI 0 3 6 118 162 0 0 0
ODI 0 0 0 1 414 61 0 0
CDI 0 0 0 0 25 601 45 0
VCDI 0 0 0 0 0 142 404 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 1505 1744 19 53 25 0 0 0
OW 1 236 16 108 167 0 0 0
VODI 0 6 10 81 256 118 0 0
ODI 0 0 0 2 123 130 11 0
CDI 0 0 0 0 49 303 59 0
VCDI 0 0 0 0 0 253 379 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 468 2973 23 53 0 0 0 0
OW 0 705 50 441 20 0 0 0
VODI 0 48 4 327 339 4 0 0
ODI 0 0 0 13 373 43 0 0
CDI 0 0 0 0 58 580 92 0
VCDI 0 0 0 0 0 92 540 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 464 2495 24 254 79 5 0 0
OW 4 968 41 300 194 33 0 0
VODI 0 263 12 262 366 238 5 0
ODI 0 0 0 18 76 209 70 0
CDI 0 0 0 0 72 171 279 0
VCDI 0 0 0 0 3 63 278 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 1841 3031 23 120 16 0 0 0
OW 14 23 5 119 3 0 0 0
VODI 0 0 0 31 60 0 0 0
ODI 0 0 0 0 29 3 0 0
CDI 0 0 0 0 1 7 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 1835 2890 19 136 19 0 0 0
OW 16 140 4 80 5 0 0 0
VODI 4 24 5 54 68 4 0 0
ODI 0 0 0 0 17 5 0 0
CDI 0 0 0 0 0 1 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 3454 2046 19 54 0 0 0 0
OW 0 34 11 88 17 0 0 0
VODI 0 0 0 74 113 0 0 0
ODI 0 0 0 4 182 36 0 0
CDI 0 0 0 0 34 165 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 3454 2062 18 58 1 0 0 0
OW 0 17 11 90 35 0 0 0
VODI 0 1 1 54 160 12 0 0
ODI 0 0 0 18 101 56 0 0
CDI 0 0 0 0 49 124 0 0
VCDI 0 0 0 0 0 9 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 10294 1017 14 6 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 10294 1017 14 6 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 8144 2037 27 229 56 0 0 0
OW 0 1 2 58 145 4 0 0
VODI 0 0 0 9 132 57 0 0
ODI 0 0 0 0 24 134 0 0
CDI 0 0 0 0 8 197 8 0
VCDI 0 0 0 0 0 137 287 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 8144 2034 24 267 271 47 0 0
OW 0 3 4 16 55 159 0 0
VODI 0 1 1 10 14 83 2 0
ODI 0 0 0 3 12 60 6 0
CDI 0 0 0 0 13 90 46 0
VCDI 0 0 0 0 0 90 241 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 4553 1135 6 3 0 0 0 0
OW 1 11 0 1 0 0 0 0
VODI 0 0 0 1 0 0 0 0
ODI 0 0 0 0 2 0 0 0
CDI 0 0 0 0 1 1 0 0
VCDI 0 0 0 0 0 83 5 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 4554 1144 6 3 0 0 0 0
OW 0 2 0 1 0 0 0 0
VODI 0 0 0 1 0 0 0 0
ODI 0 0 0 0 2 0 0 0
CDI 0 0 0 0 1 1 0 0
VCDI 0 0 0 0 0 83 5 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 7430 1144 5 8 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 7430 1144 5 8 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 19945 256 4 4 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 19945 256 4 4 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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