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: 2021-02-04

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-02-08

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 0 401 11 38 0 0 0 0
OW 0 14 4 33 9 0 0 0
VODI 0 1 4 46 42 0 0 0
ODI 0 0 0 11 58 4 0 0
CDI 0 0 0 8 55 23 1 0
VCDI 0 0 0 0 129 682 4457 30871
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 366 6 25 0 0 0 0
OW 0 37 7 25 5 0 0 0
VODI 0 11 3 40 34 0 0 0
ODI 0 2 3 29 40 3 0 0
CDI 0 0 0 14 50 15 0 0
VCDI 0 0 0 3 164 691 4458 30871

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 0 38 3095
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 38 3095

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 3 9979
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 3 9979

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 13 0 0
VCDI 0 0 0 0 0 424 2356 2861
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 28 0 0
VCDI 0 0 0 0 0 409 2356 2861

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 3 0 0
VCDI 0 0 0 0 0 21 1517 5705
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 4 2 3
VCDI 0 0 0 0 0 20 1515 5702

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 0 0 11 10
VCDI 0 0 0 0 0 82 1491 3732
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 5 20 20
VCDI 0 0 0 0 0 77 1482 3722

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 4 1 23 0 0 0 0
OW 0 3 1 19 0 0 0 0
VODI 0 3 1 11 5 0 0 0
ODI 0 1 0 7 8 0 0 0
CDI 0 0 1 3 13 25 13 0
VCDI 0 0 1 11 51 1117 4913 96
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 3 1 16 0 0 0 0
OW 0 2 0 13 0 0 0 0
VODI 0 4 1 13 0 0 0 0
ODI 0 1 1 9 2 0 0 0
CDI 0 1 0 7 10 31 15 0
VCDI 0 0 2 16 65 1111 4911 96

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2177 3845 78 414 110 17 0 0
OW 0 62 4 149 107 31 2 0
VODI 0 60 0 77 209 43 8 0
ODI 0 35 6 23 185 70 11 0
CDI 0 30 3 21 219 119 27 0
VCDI 0 27 4 57 281 1470 1350 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2177 3814 79 468 160 46 0 0
OW 0 55 3 119 122 46 10 0
VODI 0 57 0 53 183 55 15 0
ODI 0 47 1 16 148 57 21 0
CDI 0 39 4 7 177 91 20 0
VCDI 0 47 8 78 321 1455 1332 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 4585 3384 21 45 1 0 0 0
OW 0 87 18 107 17 0 0 0
VODI 0 20 8 154 56 4 0 0
ODI 0 0 1 33 167 6 0 0
CDI 0 0 0 0 174 144 0 0
VCDI 0 0 0 0 4 344 2028 288
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4585 3353 22 79 1 0 0 0
OW 0 83 10 84 15 0 0 0
VODI 0 50 9 84 66 2 0 0
ODI 0 5 7 59 83 9 0 0
CDI 0 0 0 32 136 54 0 0
VCDI 0 0 0 1 118 433 2028 288

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8415 3134 16 46 28 0 0 0
OW 0 166 15 32 5 0 0 0
VODI 0 76 14 93 10 0 0 0
ODI 0 20 7 49 62 0 0 0
CDI 0 1 5 30 149 51 1 0
VCDI 0 0 0 9 35 212 307 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8415 3060 15 46 30 0 0 0
OW 0 166 14 27 4 0 0 0
VODI 0 83 11 91 15 0 0 0
ODI 0 46 5 35 67 0 0 0
CDI 0 41 7 27 102 52 3 0
VCDI 0 1 5 33 71 211 305 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 0 161 9 14 0 0 0 0
OW 0 19 4 22 3 0 0 0
VODI 0 23 3 23 21 0 0 0
ODI 0 13 3 25 35 0 0 0
CDI 0 6 2 30 65 19 2 0
VCDI 0 0 0 43 101 286 2335 2536
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 128 6 8 0 0 0 0
OW 0 33 3 17 1 0 0 0
VODI 0 28 6 23 15 0 0 0
ODI 0 19 2 20 33 1 0 0
CDI 0 9 1 29 58 16 2 0
VCDI 0 5 3 60 118 288 2335 2536

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 10 9 10
VCDI 0 0 0 0 132 426 1836 6164
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 9 18 7
VCDI 0 0 0 0 132 427 1827 6167

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13847 3561 7 18 0 0 0 0
OW 0 248 36 70 1 0 0 0
VODI 0 34 26 172 44 0 0 0
ODI 0 3 0 55 144 2 0 0
CDI 0 0 0 4 217 27 0 0
VCDI 0 0 0 0 153 815 725 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13847 3509 9 17 0 0 0 0
OW 0 261 30 54 1 0 0 0
VODI 0 73 26 142 34 0 0 0
ODI 0 3 4 89 139 2 0 0
CDI 0 0 0 17 221 61 0 0
VCDI 0 0 0 0 164 781 725 0


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