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: 2021-11-18

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-11-22

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 0 254 11 50 11 0 0 0
OW 0 9 1 29 22 0 0 0
VODI 0 7 2 23 45 2 0 0
ODI 0 0 1 8 37 12 0 0
CDI 0 0 0 7 59 55 0 0
VCDI 0 0 0 0 46 684 4679 30848
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 245 8 46 13 0 0 0
OW 0 14 4 23 19 0 0 0
VODI 0 8 1 24 39 5 0 0
ODI 0 3 2 14 37 13 0 0
CDI 0 0 0 5 44 32 0 0
VCDI 0 0 0 5 68 703 4679 30848

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 20 0 0
OW 0 0 0 0 0 4 0 0
VODI 0 0 0 0 0 2 7 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 20 3 0
VCDI 0 0 0 0 0 151 819 2107
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 26 3 0
OW 0 0 0 0 0 0 4 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 18 8 0
VCDI 0 0 0 0 0 153 814 2107

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 3 1 0
ODI 0 0 0 0 0 12 7 0
CDI 0 0 0 0 0 102 19 0
VCDI 0 0 0 0 0 34 640 9164
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 1 0 0
VODI 0 0 0 0 0 8 4 0
ODI 0 0 0 0 0 13 10 0
CDI 0 0 0 0 0 74 14 0
VCDI 0 0 0 0 0 55 639 9164

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 15 0 0 0
VODI 0 0 0 28 147 10 0 0
ODI 0 0 0 0 95 155 33 0
CDI 0 0 0 0 139 615 284 0
VCDI 0 0 0 0 0 102 1757 2274
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 16 57 50 19 0
OW 0 0 0 12 95 131 109 0
VODI 0 0 0 0 51 277 101 0
ODI 0 0 0 0 110 290 88 0
CDI 0 0 0 0 83 98 152 0
VCDI 0 0 0 0 0 36 1605 2274

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 0 178 1324 5744
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 0 178 1324 5744

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 1 12
VCDI 0 0 0 0 0 66 1163 4084
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 2 26
VCDI 0 0 0 0 0 66 1162 4070

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 1320 15 29 7 0 0 0
OW 0 108 20 91 12 1 0 0
VODI 0 59 5 117 64 7 0 0
ODI 0 38 1 31 150 35 0 0
CDI 0 28 4 17 74 87 16 7
VCDI 0 24 10 73 201 686 2034 960
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1211 19 47 9 0 0 0
OW 0 121 14 72 26 6 0 0
VODI 0 103 3 85 107 37 0 0
ODI 0 60 4 31 81 29 7 0
CDI 0 44 4 25 50 79 22 8
VCDI 0 38 11 98 235 665 2021 959

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5724 3495 45 147 31 1 0 0
OW 0 33 9 105 79 5 0 0
VODI 0 5 3 38 137 35 0 0
ODI 0 1 0 4 70 83 3 0
CDI 0 0 1 5 61 215 41 0
VCDI 0 0 0 2 42 483 428 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5724 3447 45 172 104 14 0 0
OW 0 64 6 56 66 48 2 0
VODI 0 22 4 47 78 70 7 0
ODI 0 1 3 19 63 72 24 0
CDI 0 0 0 7 50 76 31 0
VCDI 0 0 0 0 59 542 408 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 6648 2739 6 7 0 0 0 0
OW 0 104 17 68 3 0 0 0
VODI 0 21 9 136 37 0 0 0
ODI 0 0 0 69 96 16 0 0
CDI 0 0 0 12 152 124 6 0
VCDI 0 0 0 0 139 326 961 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6648 2610 5 7 0 0 0 0
OW 0 149 10 29 9 0 0 0
VODI 0 93 11 85 27 1 0 0
ODI 0 12 6 100 39 9 0 0
CDI 0 0 0 60 121 51 12 0
VCDI 0 0 0 11 231 405 955 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 10793 1681 19 97 173 88 0 0
OW 0 16 1 18 11 6 0 0
VODI 0 2 0 15 15 13 0 0
ODI 0 0 0 0 28 9 0 0
CDI 0 0 0 0 1 2 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 10793 1681 18 105 177 90 0 0
OW 0 13 2 8 9 8 0 0
VODI 0 5 0 17 32 15 0 0
ODI 0 0 0 0 10 5 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 189 1227 19 94 7 0 0 0
OW 0 40 10 121 73 3 0 0
VODI 0 10 3 134 162 15 0 0
ODI 0 0 0 23 277 48 10 0
CDI 0 0 0 0 138 197 43 0
VCDI 0 0 0 0 123 1438 1399 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 189 1166 15 106 38 14 0 0
OW 0 85 8 108 117 19 4 0
VODI 0 26 8 104 166 25 12 0
ODI 0 0 1 41 105 36 19 0
CDI 0 0 0 11 112 98 46 0
VCDI 0 0 0 2 242 1509 1371 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 5042 2620 6 22 1 0 0 0
OW 13 170 8 30 0 0 0 0
VODI 3 52 9 94 17 0 0 0
ODI 0 10 4 88 112 0 0 0
CDI 0 0 0 24 113 47 0 0
VCDI 0 0 0 0 28 74 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5047 2493 6 23 1 0 0 0
OW 11 163 1 2 0 0 0 0
VODI 0 130 10 35 2 0 0 0
ODI 0 48 4 53 26 0 0 0
CDI 0 18 6 93 124 9 0 0
VCDI 0 0 0 52 118 112 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 18489 1671 3 3 0 0 0 0
OW 2 1 0 6 0 0 0 0
VODI 0 6 3 5 0 0 0 0
ODI 0 10 1 7 0 0 0 0
CDI 0 0 0 2 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 18489 1669 2 3 0 0 0 0
OW 2 3 1 3 0 0 0 0
VODI 0 2 0 5 0 0 0 0
ODI 0 13 3 6 0 0 0 0
CDI 0 1 1 6 0 0 0 0
VCDI 0 0 0 0 0 0 0 0


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