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: 2021-10-21

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-10-25

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 0 753 22 96 21 0 0 0
OW 0 85 10 119 59 0 0 0
VODI 0 31 13 146 210 0 0 0
ODI 0 3 1 51 274 55 0 0
CDI 0 0 0 22 195 396 62 0
VCDI 0 0 0 8 121 2036 9456 22657
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 683 21 103 40 0 0 0
OW 0 149 14 100 80 0 0 0
VODI 0 34 10 131 270 33 0 0
ODI 0 6 1 59 165 142 0 0
CDI 0 0 0 36 163 359 100 0
VCDI 0 0 0 13 162 1953 9418 22657

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 0 679 33 53 0 0 0 0
OW 0 6 1 52 0 0 0 0
VODI 0 14 2 95 71 0 0 0
ODI 0 4 2 29 114 9 0 0
CDI 0 1 0 26 153 163 0 0
VCDI 0 0 0 0 152 1078 396 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 648 30 66 0 0 0 0
OW 0 37 4 63 8 0 0 0
VODI 0 4 0 27 117 0 0 0
ODI 0 9 3 38 58 11 0 0
CDI 0 6 1 40 80 91 0 0
VCDI 0 0 0 21 227 1148 396 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 159 1061 17 55 0 0 0 0
OW 2 165 26 173 0 0 0 0
VODI 0 23 22 295 72 0 0 0
ODI 0 0 0 48 289 16 0 0
CDI 0 0 0 0 217 227 0 0
VCDI 0 0 0 0 10 1818 3032 2255
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 158 884 28 190 23 0 0 0
OW 3 274 13 128 32 0 0 0
VODI 0 75 18 134 127 0 0 0
ODI 0 13 2 70 144 50 0 0
CDI 0 3 4 48 211 168 3 0
VCDI 0 0 0 1 51 1843 3029 2255

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 583 2278 23 47 4 0 0 0
OW 5 57 17 163 18 0 0 0
VODI 0 7 1 101 122 4 0 0
ODI 0 0 0 13 175 45 0 0
CDI 0 0 0 0 140 124 0 0
VCDI 0 0 0 0 67 714 943 3
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 584 2120 15 40 9 0 0 0
OW 4 115 6 68 23 0 0 0
VODI 0 84 10 105 75 32 0 0
ODI 0 23 9 77 116 50 0 0
CDI 0 0 1 33 142 75 0 0
VCDI 0 0 0 1 161 730 943 3

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 26 9 34 11 0 0 0
VODI 0 0 0 98 88 0 0 0
ODI 0 0 0 4 211 62 0 0
CDI 0 0 0 0 20 516 157 48
VCDI 0 0 0 0 0 182 2956 2824
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 20 3 47 31 0 0 0
OW 0 6 6 71 93 50 0 0
VODI 0 0 0 18 135 243 79 0
ODI 0 0 0 0 51 137 108 0
CDI 0 0 0 0 20 212 203 63
VCDI 0 0 0 0 0 118 2723 2809

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 134 8 46 4 0 0 0
OW 0 46 11 77 30 0 0 0
VODI 0 0 0 83 114 1 0 0
ODI 0 0 0 19 646 166 0 0
CDI 0 0 0 0 262 2129 204 0
VCDI 0 0 0 0 0 603 743 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 52 5 57 78 1 0 0
OW 0 122 14 124 172 346 0 0
VODI 0 6 0 44 490 1054 126 0
ODI 0 0 0 0 245 586 211 0
CDI 0 0 0 0 71 552 180 0
VCDI 0 0 0 0 0 360 430 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 1923 1827 21 72 0 0 0 0
OW 0 162 18 213 9 0 0 0
VODI 0 30 3 261 246 5 0 0
ODI 0 0 0 18 680 45 0 0
CDI 0 0 0 0 150 265 1 0
VCDI 0 0 0 0 18 263 101 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1923 1722 27 205 44 0 0 0
OW 0 273 13 194 159 0 0 0
VODI 0 24 2 142 239 18 0 0
ODI 0 0 0 21 405 39 0 0
CDI 0 0 0 2 141 132 0 0
VCDI 0 0 0 0 115 389 102 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 9866 1435 8 10 0 0 0 0
OW 1 8 0 3 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 9866 1437 8 13 0 0 0 0
OW 1 6 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 7066 2630 22 193 129 0 0 0
OW 0 37 9 43 48 5 0 0
VODI 0 3 3 40 63 19 0 0
ODI 0 0 0 16 56 38 0 0
CDI 0 0 0 0 62 150 1 0
VCDI 0 0 0 0 0 211 852 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7066 2603 19 181 157 0 0 0
OW 0 46 4 29 27 12 0 0
VODI 0 21 10 37 33 23 0 0
ODI 0 0 1 34 35 44 0 0
CDI 0 0 0 11 86 74 1 0
VCDI 0 0 0 0 20 270 852 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 12573 415 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 12573 415 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 4773 751 14 20 1 0 0 0
OW 0 36 5 43 11 0 0 0
VODI 0 6 0 43 6 0 0 0
ODI 0 0 0 0 3 0 0 0
CDI 0 0 0 0 1 2 0 0
VCDI 0 0 0 0 0 38 50 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4689 548 0 5 6 0 0 0
OW 84 205 11 34 5 0 0 0
VODI 0 40 8 61 3 0 0 0
ODI 0 0 0 6 6 0 0 0
CDI 0 0 0 0 2 2 0 0
VCDI 0 0 0 0 0 38 50 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 7255 1321 4 7 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 7255 1321 4 7 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 19847 339 5 18 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 19847 339 5 18 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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