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: 2020-11-19

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-11-23

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 1039 33 177 41 0 0 0
OW 0 25 4 81 98 1 0 0
VODI 0 12 3 22 159 23 0 0
ODI 0 10 2 8 167 125 0 0
CDI 0 2 3 16 38 237 5 0
VCDI 0 0 0 21 78 913 6782 26777
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 952 28 142 85 3 0 0
OW 0 78 8 78 59 10 0 0
VODI 0 36 0 47 143 34 0 0
ODI 0 13 4 11 117 92 0 0
CDI 0 9 2 10 71 154 3 0
VCDI 0 0 3 37 106 1006 6784 26777

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 0 106 410 2617
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 0 106 410 2617

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 1 8 0 0 0
VODI 0 0 0 2 44 1 0 0
ODI 0 0 0 0 19 26 5 0
CDI 0 0 0 0 20 77 31 0
VCDI 0 0 0 0 34 463 2242 7009
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 4 0 0 0
OW 0 0 0 2 25 0 0 0
VODI 0 0 0 1 29 4 0 0
ODI 0 0 0 0 18 31 8 0
CDI 0 0 0 0 15 74 40 2
VCDI 0 0 0 0 34 458 2230 7007

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 334 2926 12 25 0 0 0 0
OW 1 169 45 149 3 0 0 0
VODI 0 9 8 229 54 0 0 0
ODI 0 0 0 22 164 6 0 0
CDI 0 0 0 0 105 77 7 0
VCDI 0 0 0 0 18 402 888 1
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 334 2820 25 77 0 0 0 0
OW 1 217 14 130 4 0 0 0
VODI 0 63 22 121 49 0 0 0
ODI 0 4 4 74 93 1 0 0
CDI 0 0 0 23 103 18 0 0
VCDI 0 0 0 0 95 466 895 1

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 3 0 0 0 0 0 0
OW 0 8 4 18 0 0 0 0
VODI 0 0 0 31 52 0 0 0
ODI 0 0 0 0 75 15 0 0
CDI 0 0 0 0 12 168 15 0
VCDI 0 0 0 0 0 832 3745 2268
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 4 2 11 0 0 0 0
OW 0 4 0 13 0 0 0 0
VODI 0 3 2 16 19 0 0 0
ODI 0 0 0 9 72 2 0 0
CDI 0 0 0 0 34 70 9 0
VCDI 0 0 0 0 14 943 3751 2268

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 26 0 0
CDI 0 0 0 0 0 205 30 0
VCDI 0 0 0 0 0 1174 3772 119
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 42 1 0
CDI 0 0 0 0 0 180 56 0
VCDI 0 0 0 0 0 1183 3745 119

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1058 2576 15 49 0 0 0 0
OW 0 148 24 172 34 0 0 0
VODI 0 23 7 185 191 1 0 0
ODI 0 0 0 54 276 114 0 0
CDI 0 0 0 2 127 205 21 0
VCDI 0 0 0 0 57 411 581 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1058 2079 15 113 84 0 0 0
OW 0 450 8 49 108 17 0 0
VODI 0 213 19 192 106 52 0 0
ODI 0 5 4 66 125 77 0 0
CDI 0 0 0 42 156 173 21 0
VCDI 0 0 0 0 106 412 581 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 8791 2368 21 45 0 0 0 0
OW 0 11 0 39 2 0 0 0
VODI 0 0 0 17 22 0 0 0
ODI 0 0 0 10 5 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 8791 2327 21 86 20 0 0 0
OW 0 49 0 24 8 0 0 0
VODI 0 3 0 1 1 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 6023 2424 4 28 0 0 0 0
OW 0 100 9 39 4 0 0 0
VODI 0 26 16 101 40 0 0 0
ODI 0 16 1 54 84 2 0 0
CDI 0 9 6 28 153 148 0 0
VCDI 0 0 0 8 62 850 1461 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6023 2426 9 46 3 0 0 0
OW 0 84 11 52 18 0 0 0
VODI 0 36 8 84 52 0 0 0
ODI 0 17 1 36 88 6 0 0
CDI 0 12 7 31 118 96 0 0
VCDI 0 0 0 9 64 898 1461 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 9938 2168 24 134 183 125 5 0
OW 0 24 8 36 23 32 1 0
VODI 0 0 1 24 45 37 2 0
ODI 0 0 0 4 34 27 0 0
CDI 0 0 0 0 28 78 0 0
VCDI 0 0 0 0 0 7 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9938 2182 27 150 204 175 7 0
OW 0 10 6 24 35 24 1 0
VODI 0 0 0 22 23 25 0 0
ODI 0 0 0 2 34 24 0 0
CDI 0 0 0 0 17 56 0 0
VCDI 0 0 0 0 0 2 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 228 1607 16 147 22 0 0 0
OW 0 38 10 134 73 1 0 0
VODI 0 22 8 92 254 15 0 0
ODI 0 0 0 12 188 94 0 0
CDI 0 0 0 0 54 175 79 0
VCDI 0 0 0 0 1 528 2005 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 228 1476 10 122 72 0 0 0
OW 0 123 6 104 104 9 0 0
VODI 0 57 13 106 186 34 21 0
ODI 0 11 5 34 103 129 49 0
CDI 0 0 0 19 66 84 70 0
VCDI 0 0 0 0 61 557 1944 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 727 2705 45 244 84 5 0 0
OW 0 156 32 347 201 31 0 0
VODI 0 37 8 318 628 86 0 0
ODI 0 1 2 67 582 303 0 0
CDI 0 0 0 1 243 648 27 0
VCDI 0 0 0 0 57 738 264 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 727 2707 62 502 782 158 0 0
OW 0 74 8 195 228 95 0 0
VODI 0 33 4 110 193 204 0 0
ODI 0 42 5 67 138 206 3 0
CDI 0 42 5 51 126 219 55 0
VCDI 0 1 3 52 328 929 233 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 19074 1058 2 0 0 0 0 0
OW 23 11 1 3 0 0 0 0
VODI 1 1 0 2 0 0 0 0
ODI 0 21 3 0 0 0 0 0
CDI 0 1 3 5 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 19078 1024 2 0 0 0 0 0
OW 19 45 1 2 0 0 0 0
VODI 1 0 0 2 0 0 0 0
ODI 0 11 1 1 0 0 0 0
CDI 0 10 4 5 0 0 0 0
VCDI 0 2 1 0 0 0 0 0


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