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: 2020-11-26

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-11-30

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 1163 22 83 3 0 0 0
OW 0 67 26 75 18 0 0 0
VODI 0 19 5 131 60 0 0 0
ODI 0 5 3 78 202 3 0 0
CDI 0 0 1 17 213 23 0 0
VCDI 0 0 0 12 201 2490 7073 24909
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 961 19 73 3 0 0 0
OW 0 153 4 38 14 0 0 0
VODI 0 107 17 74 46 0 0 0
ODI 0 30 11 95 96 4 0 0
CDI 0 3 5 68 190 16 0 0
VCDI 0 0 1 48 348 2496 7073 24909

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 98 542 2493
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 98 542 2493

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 3 0 0
VCDI 0 0 0 0 0 177 1957 7845
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 0 180 1957 7845

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6 2608 21 40 0 0 0 0
OW 0 152 33 185 22 0 0 0
VODI 0 6 11 210 183 9 0 0
ODI 0 0 0 13 260 64 0 0
CDI 0 0 0 0 106 171 4 0
VCDI 0 0 0 0 14 269 1243 24
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6 2444 29 98 10 0 0 0
OW 0 264 18 129 53 1 0 0
VODI 0 58 18 159 156 31 0 0
ODI 0 0 0 51 152 62 0 0
CDI 0 0 0 11 159 82 2 0
VCDI 0 0 0 0 55 337 1245 24

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 1 0 0 0 0
VODI 0 0 0 45 8 0 0 0
ODI 0 0 0 8 57 0 18 0
CDI 0 0 0 0 27 129 129 29
VCDI 0 0 0 0 0 219 4295 2281
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 7 0 0 0 0
VODI 0 0 0 47 18 0 0 0
ODI 0 0 0 0 64 19 6 0
CDI 0 0 0 0 0 86 135 30
VCDI 0 0 0 0 10 243 4301 2280

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 1 0 0 0
VODI 0 0 0 0 18 0 0 0
ODI 0 0 0 0 38 42 0 0
CDI 0 0 0 0 57 163 11 0
VCDI 0 0 0 0 48 1928 2721 299
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 7 0 0 0
VODI 0 0 0 0 16 12 0 0
ODI 0 0 0 0 37 88 1 0
CDI 0 0 0 0 50 216 12 0
VCDI 0 0 0 0 52 1817 2719 299

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1523 2463 8 8 0 0 0 0
OW 0 256 24 105 1 0 0 0
VODI 0 117 8 203 125 4 0 0
ODI 0 78 2 48 266 31 0 0
CDI 0 44 4 24 179 90 4 0
VCDI 0 31 5 17 91 494 78 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1523 2172 6 3 0 0 0 0
OW 0 424 16 59 0 0 0 0
VODI 0 186 14 170 86 4 0 0
ODI 0 105 3 95 249 23 0 0
CDI 0 72 4 58 215 46 4 0
VCDI 0 30 8 20 112 546 78 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 8679 2442 20 19 0 0 0 0
OW 0 45 2 14 0 0 0 0
VODI 0 13 6 29 3 0 0 0
ODI 0 0 0 30 20 0 0 0
CDI 0 0 0 3 6 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 8679 2395 19 17 0 0 0 0
OW 0 83 5 18 0 0 0 0
VODI 0 22 4 49 12 0 0 0
ODI 0 0 0 11 16 0 0 0
CDI 0 0 0 0 1 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 5833 2403 6 21 4 0 0 0
OW 0 92 10 56 8 0 0 0
VODI 0 52 16 79 42 2 0 0
ODI 0 12 3 65 87 4 0 0
CDI 0 5 2 30 165 100 4 0
VCDI 0 0 1 15 77 900 1602 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5833 2314 4 16 5 0 0 0
OW 0 131 5 36 9 0 0 0
VODI 0 78 15 71 35 2 0 0
ODI 0 27 9 73 60 11 0 0
CDI 0 12 2 46 145 110 14 0
VCDI 0 2 3 24 129 883 1592 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 9371 2459 34 136 164 101 0 0
OW 0 29 8 28 61 58 1 0
VODI 0 4 2 40 63 21 5 0
ODI 0 0 0 10 80 25 5 0
CDI 0 0 0 0 40 119 11 0
VCDI 0 0 0 0 0 95 18 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9371 2470 37 147 228 174 3 0
OW 0 22 6 30 43 35 9 0
VODI 0 0 1 35 66 64 16 0
ODI 0 0 0 2 42 37 5 0
CDI 0 0 0 0 29 71 7 0
VCDI 0 0 0 0 0 38 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 21 1247 15 83 13 0 0 0
OW 0 36 7 72 51 0 0 0
VODI 0 7 3 72 116 3 0 0
ODI 0 0 3 31 114 118 0 0
CDI 0 0 0 18 79 327 41 0
VCDI 0 0 0 1 64 476 2759 26
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 21 1089 7 82 41 0 0 0
OW 0 87 3 38 52 0 0 0
VODI 0 78 7 32 121 21 0 0
ODI 0 22 5 62 31 126 33 0
CDI 0 13 1 30 80 277 137 0
VCDI 0 1 5 33 112 500 2630 26

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 209 1600 37 148 31 0 0 0
OW 0 152 24 249 104 10 0 0
VODI 0 45 6 60 375 133 0 0
ODI 0 1 0 21 534 487 0 0
CDI 0 0 0 0 294 1050 306 0
VCDI 0 0 0 0 222 1472 1017 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 209 1659 50 344 191 52 1 0
OW 0 84 10 71 284 233 26 0
VODI 0 51 7 18 260 483 44 0
ODI 0 4 0 18 115 309 101 0
CDI 0 0 0 14 219 563 187 0
VCDI 0 0 0 13 491 1512 964 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 16654 3201 22 78 8 0 0 0
OW 0 42 5 70 3 0 0 0
VODI 0 40 2 24 8 0 0 0
ODI 0 10 0 3 0 0 0 0
CDI 0 6 3 16 0 0 0 0
VCDI 0 7 3 4 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 16653 3171 21 85 10 0 0 0
OW 1 66 6 50 3 0 0 0
VODI 0 36 1 31 6 0 0 0
ODI 0 18 1 8 0 0 0 0
CDI 0 4 1 9 0 0 0 0
VCDI 0 11 5 12 0 0 0 0


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