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: 2021-01-07

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-01-11

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 0 598 12 37 0 0 0 0
OW 0 50 9 50 4 0 0 0
VODI 0 21 7 107 50 0 0 0
ODI 0 9 3 52 111 4 0 0
CDI 0 3 1 63 155 77 0 0
VCDI 0 0 0 10 204 1433 7526 26306
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 460 5 16 0 0 0 0
OW 0 74 6 25 0 0 0 0
VODI 0 71 5 59 4 0 0 0
ODI 0 45 6 57 37 0 0 0
CDI 0 30 7 76 94 23 0 0
VCDI 0 1 3 86 389 1491 7526 26306

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 3
VCDI 0 0 0 0 0 47 327 2756
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 4
VCDI 0 0 0 0 0 47 327 2755

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 21 13 3
VCDI 0 0 0 0 0 52 2526 7367
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 34 47 9
VCDI 0 0 0 0 0 39 2492 7361

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 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 11 0 0
VCDI 0 0 0 0 0 220 2436 2987
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 1 0 0
VCDI 0 0 0 0 0 230 2436 2987

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 35
VCDI 0 0 0 0 0 2 452 6757
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 2 452 6792

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 6 0
VCDI 0 0 0 0 0 33 1455 3832
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 33 1461 3832

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 473 9 113 18 0 0 0
OW 0 81 22 166 40 0 0 0
VODI 0 46 6 249 259 0 0 0
ODI 0 27 1 102 634 14 0 0
CDI 0 22 2 19 333 190 24 0
VCDI 0 17 6 51 178 1095 2024 110
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 142 4 72 14 0 0 0
OW 0 134 4 153 87 0 0 0
VODI 0 170 13 127 175 1 0 0
ODI 0 96 9 143 305 11 0 0
CDI 0 68 7 94 337 32 0 0
VCDI 0 56 9 111 544 1255 2048 110

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6224 3418 35 137 4 0 0 0
OW 0 67 20 225 25 0 0 0
VODI 0 3 2 307 107 5 0 0
ODI 0 0 0 55 192 22 0 0
CDI 0 0 0 3 133 134 5 0
VCDI 0 0 0 3 34 123 48 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6224 3218 25 151 13 0 0 0
OW 0 180 18 125 42 2 0 0
VODI 0 60 11 271 100 13 0 0
ODI 0 18 0 114 116 23 0 0
CDI 0 11 2 51 99 88 9 0
VCDI 0 1 1 18 125 158 44 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 6097 2228 4 52 1 0 0 0
OW 0 113 0 22 9 0 0 0
VODI 0 104 5 19 19 0 0 0
ODI 0 63 4 22 19 0 0 0
CDI 0 83 11 49 50 9 0 0
VCDI 0 21 9 121 332 894 1244 92
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6097 2077 3 44 0 0 0 0
OW 0 121 1 20 3 0 0 0
VODI 0 127 1 19 9 0 0 0
ODI 0 85 4 11 20 0 0 0
CDI 0 114 7 38 28 1 0 0
VCDI 0 88 17 153 370 902 1244 92

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8072 3149 35 154 71 56 0 0
OW 0 23 8 58 51 16 0 0
VODI 0 15 1 43 84 61 0 0
ODI 0 2 0 19 93 86 0 0
CDI 0 0 0 20 38 294 16 0
VCDI 0 0 0 0 41 254 228 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8072 3140 37 181 126 92 0 0
OW 0 22 6 32 72 60 0 0
VODI 0 16 1 32 82 135 5 0
ODI 0 8 0 14 19 153 28 0
CDI 0 3 0 29 25 174 63 0
VCDI 0 0 0 6 54 153 148 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 0 427 13 22 0 0 0 0
OW 0 46 9 35 0 0 0 0
VODI 0 19 7 72 9 0 0 0
ODI 0 11 2 31 25 0 0 0
CDI 0 2 6 29 52 3 0 0
VCDI 0 0 0 33 247 598 2694 1411
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 368 10 18 0 0 0 0
OW 0 64 4 34 0 0 0 0
VODI 0 46 12 43 9 0 0 0
ODI 0 14 4 41 19 0 0 0
CDI 0 11 2 38 33 5 0 0
VCDI 0 2 5 48 272 596 2694 1411

Hudson Bay:

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 65 4 0
VCDI 0 0 0 0 0 939 5168 2411
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 23 3 0
VCDI 0 0 0 0 0 981 5169 2411

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13474 3829 56 154 6 0 0 0
OW 0 12 13 148 54 1 0 0
VODI 0 4 1 73 82 7 0 0
ODI 0 0 0 16 134 48 0 0
CDI 0 0 0 0 155 138 0 0
VCDI 0 0 0 0 379 1043 382 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13474 3796 49 149 18 0 0 0
OW 0 44 19 125 73 13 0 0
VODI 0 5 2 80 74 26 0 0
ODI 0 0 0 36 86 29 0 0
CDI 0 0 0 1 135 100 0 0
VCDI 0 0 0 0 424 1069 382 0


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