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: 2022-11-17

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-11-21

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 0 511 12 71 8 0 0 0
OW 0 26 6 43 31 0 0 0
VODI 0 6 4 66 41 5 0 0
ODI 0 0 0 27 55 7 0 0
CDI 0 0 0 6 67 48 0 0
VCDI 0 0 0 0 131 1372 5516 28843
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 480 5 39 4 0 0 0
OW 0 45 10 38 17 0 0 0
VODI 0 18 5 64 34 4 0 0
ODI 0 0 2 43 44 7 0 0
CDI 0 0 0 26 62 31 0 0
VCDI 0 0 0 3 172 1390 5516 28843

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 6 13 0
CDI 0 0 0 0 0 0 8 0
VCDI 0 0 0 0 0 230 588 2288
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 13 0
OW 0 0 0 0 0 3 5 0
VODI 0 0 0 0 0 3 1 0
ODI 0 0 0 0 0 0 2 0
CDI 0 0 0 0 0 0 6 1
VCDI 0 0 0 0 0 230 582 2287

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 96 12 26 0 0 0 0
OW 0 15 4 41 7 0 0 0
VODI 0 6 2 43 42 0 0 0
ODI 0 1 0 7 135 2 0 0
CDI 0 0 0 0 125 78 0 0
VCDI 0 0 0 0 51 3071 3977 2241
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 112 15 48 2 0 0 0
OW 0 6 3 49 17 0 0 0
VODI 0 0 0 20 90 0 0 0
ODI 0 0 0 0 84 9 0 0
CDI 0 0 0 0 77 62 3 0
VCDI 0 0 0 0 90 3080 3974 2241

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 2088 27 69 0 0 0 0
OW 4 211 27 202 63 0 0 0
VODI 0 41 11 205 299 2 0 0
ODI 0 5 6 36 348 142 0 0
CDI 0 0 0 0 200 481 0 0
VCDI 0 0 0 0 95 743 349 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1 2181 45 176 92 0 0 0
OW 3 116 16 155 159 9 0 0
VODI 0 37 3 129 229 167 0 0
ODI 0 11 7 48 161 159 0 0
CDI 0 0 0 4 194 170 0 0
VCDI 0 0 0 0 170 863 349 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 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 3
VCDI 0 0 0 0 0 36 1405 5802
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 2 1 7
VCDI 0 0 0 0 0 34 1404 5798

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 0 0
VCDI 0 0 0 0 0 0 100 5226
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 1
VCDI 0 0 0 0 0 0 100 5225

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 75 1494 14 38 3 0 0 0
OW 1 93 12 38 14 0 0 0
VODI 0 31 9 97 104 0 0 0
ODI 0 7 1 15 119 16 0 0
CDI 0 9 1 8 66 116 13 0
VCDI 0 9 3 33 99 462 2664 667
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 75 1317 17 48 4 0 0 0
OW 1 234 7 30 19 0 0 0
VODI 0 61 11 74 80 0 0 0
ODI 0 6 0 30 96 9 0 0
CDI 0 8 1 5 65 46 12 1
VCDI 0 17 4 42 141 539 2665 666

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8449 2361 18 35 1 0 0 0
OW 0 43 2 21 9 0 0 0
VODI 0 20 3 22 31 0 0 0
ODI 0 4 1 17 33 1 0 0
CDI 0 1 1 2 25 27 0 0
VCDI 0 0 0 0 1 109 94 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8449 2373 19 42 1 0 0 0
OW 0 33 1 18 11 0 0 0
VODI 0 22 4 20 29 0 0 0
ODI 0 1 1 13 26 0 0 0
CDI 0 0 0 4 28 15 0 0
VCDI 0 0 0 0 5 122 94 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 6476 2496 19 61 3 0 0 0
OW 0 82 11 113 41 1 0 0
VODI 0 11 3 103 99 0 0 0
ODI 0 0 0 21 134 8 0 0
CDI 0 0 0 3 167 152 0 0
VCDI 0 0 0 0 34 685 925 48
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6476 2464 19 64 9 0 0 0
OW 0 88 7 78 27 1 0 0
VODI 0 28 5 91 77 0 0 0
ODI 0 9 2 50 94 6 0 0
CDI 0 0 0 18 189 133 0 0
VCDI 0 0 0 0 82 706 925 48

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10732 2025 22 70 112 18 0 0
OW 0 6 0 2 1 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 10732 2031 22 70 112 18 0 0
OW 0 0 0 2 1 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 0 933 13 64 1 0 0 0
OW 0 44 5 78 21 0 0 0
VODI 0 13 6 97 44 0 0 0
ODI 0 1 1 61 69 0 0 0
CDI 0 0 0 58 121 14 2 0
VCDI 0 0 0 31 639 1841 1646 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 823 7 14 0 0 0 0
OW 0 79 3 28 4 0 0 0
VODI 0 60 7 74 15 0 0 0
ODI 0 20 6 70 35 0 0 0
CDI 0 8 1 90 72 13 2 0
VCDI 0 1 1 113 769 1842 1646 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 2141 3938 32 186 10 0 0 0
OW 4 234 29 105 39 0 0 0
VODI 0 44 8 109 129 0 0 0
ODI 0 16 1 18 219 48 0 0
CDI 0 2 2 17 160 127 0 0
VCDI 0 0 0 21 156 791 1 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2145 3939 39 246 21 0 0 0
OW 0 146 16 66 68 0 0 0
VODI 0 69 8 56 110 20 0 0
ODI 0 41 4 22 105 36 0 0
CDI 0 20 2 18 174 92 0 0
VCDI 0 19 3 48 235 818 1 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 15993 3140 29 79 5 0 0 0
OW 41 24 4 68 48 0 0 0
VODI 3 0 1 14 124 0 0 0
ODI 0 0 0 8 95 90 0 0
CDI 0 0 0 5 20 220 0 0
VCDI 0 0 0 0 56 142 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 16019 3136 27 101 13 0 0 0
OW 18 26 4 30 59 0 0 0
VODI 0 2 3 22 106 0 0 0
ODI 0 0 0 14 74 43 0 0
CDI 0 0 0 6 26 166 0 0
VCDI 0 0 0 1 70 243 0 0


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