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: 2022-11-03

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-11-07

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 6 781 5 21 4 0 0 0
OW 0 68 3 20 11 0 0 0
VODI 0 46 4 35 17 2 0 0
ODI 0 30 1 35 25 7 0 0
CDI 0 28 1 12 89 33 0 0
VCDI 0 33 9 62 152 1589 10161 23612
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6 685 0 11 3 0 0 0
OW 0 88 5 12 6 0 0 0
VODI 0 59 3 31 14 0 0 0
ODI 0 33 2 25 16 7 0 0
CDI 0 42 3 32 39 19 0 0
VCDI 0 79 10 74 220 1605 10161 23612

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 23 2 0 0
OW 0 0 0 0 0 3 0 0
VODI 0 0 0 0 0 4 0 0
ODI 0 0 0 0 0 1 0 0
CDI 0 0 0 0 0 4 0 0
VCDI 0 0 0 0 0 797 1243 1056
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 23 3 0 0
OW 0 0 0 0 0 4 0 0
VODI 0 0 0 0 0 3 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 0 801 1243 1056

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 83 5 12 1 0 0 0
OW 0 59 6 30 19 0 0 0
VODI 0 4 4 46 56 0 0 0
ODI 0 0 0 9 72 17 0 0
CDI 0 0 0 2 55 203 0 0
VCDI 0 0 0 0 30 1332 3091 4846
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 71 5 15 6 0 0 0
OW 0 24 1 21 22 0 0 0
VODI 0 34 1 22 48 0 0 0
ODI 0 14 4 8 32 10 0 0
CDI 0 3 4 15 32 65 0 0
VCDI 0 0 0 18 93 1477 3091 4846

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1187 2866 19 86 32 0 0 0
OW 2 166 18 83 43 0 0 0
VODI 0 37 19 125 81 9 0 0
ODI 0 8 2 54 158 37 0 0
CDI 0 4 5 17 152 147 0 0
VCDI 0 0 0 14 71 171 41 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1185 2608 5 36 12 0 0 0
OW 4 230 11 52 48 0 0 0
VODI 0 190 31 101 59 26 0 0
ODI 0 39 9 113 158 39 0 0
CDI 0 12 3 43 165 124 0 0
VCDI 0 2 4 34 95 175 41 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 16 0 0 0 0
VODI 0 0 0 22 12 0 0 0
ODI 0 0 0 6 79 2 0 0
CDI 0 0 0 0 109 227 40 0
VCDI 0 0 0 0 67 1823 4531 312
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 28 5 11 3 0
CDI 0 0 0 14 58 202 48 0
VCDI 0 0 0 2 204 1839 4520 312

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 5 0 0
CDI 0 0 0 0 0 40 11 0
VCDI 0 0 0 0 0 604 4003 663
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 18 0 0
CDI 0 0 0 0 0 84 20 0
VCDI 0 0 0 0 0 547 3994 663

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1181 1104 17 71 5 0 0 0
OW 0 25 7 68 39 0 0 0
VODI 0 15 8 98 90 0 0 0
ODI 0 0 0 35 305 108 0 0
CDI 0 0 0 4 184 1407 306 0
VCDI 0 0 0 0 0 369 885 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1181 1132 23 112 26 1 0 0
OW 0 12 9 114 270 148 0 0
VODI 0 0 0 50 300 873 77 0
ODI 0 0 0 0 25 261 226 0
CDI 0 0 0 0 2 381 240 0
VCDI 0 0 0 0 0 220 648 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 9444 1623 20 37 4 0 0 0
OW 0 18 1 24 22 0 0 0
VODI 0 0 0 0 34 2 0 0
ODI 0 0 0 0 11 24 0 0
CDI 0 0 0 0 0 47 0 0
VCDI 0 0 0 0 0 10 10 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9444 1640 21 60 35 0 0 0
OW 0 1 0 1 26 4 0 0
VODI 0 0 0 0 10 19 0 0
ODI 0 0 0 0 0 27 0 0
CDI 0 0 0 0 0 27 0 0
VCDI 0 0 0 0 0 6 10 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 6589 2507 14 79 10 0 0 0
OW 0 25 8 103 36 5 0 0
VODI 0 2 2 98 89 21 0 0
ODI 0 0 0 25 155 23 0 0
CDI 0 0 0 0 137 99 1 0
VCDI 0 0 0 0 26 500 1125 17
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6589 2453 9 50 10 4 0 0
OW 0 63 10 104 30 32 0 0
VODI 0 16 3 96 116 16 0 0
ODI 0 2 2 37 90 8 0 0
CDI 0 0 0 18 161 76 12 0
VCDI 0 0 0 0 46 512 1114 17

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11341 1417 17 122 87 0 0 0
OW 0 0 0 4 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 11341 1417 17 124 86 0 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 107 1640 34 123 4 0 0 0
OW 0 20 12 155 67 0 0 0
VODI 0 0 2 95 289 3 0 0
ODI 0 0 0 0 404 500 0 0
CDI 0 0 0 0 46 758 13 0
VCDI 0 0 0 0 54 1280 197 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 107 1630 37 260 133 0 0 0
OW 0 26 9 91 287 59 0 0
VODI 0 4 2 22 280 361 0 0
ODI 0 0 0 0 60 443 0 0
CDI 0 0 0 0 49 465 11 0
VCDI 0 0 0 0 55 1213 199 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 4621 3388 12 25 0 0 0 0
OW 25 80 2 43 0 0 0 0
VODI 8 8 4 72 20 0 0 0
ODI 0 0 0 75 153 0 0 0
CDI 0 0 0 0 51 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 4580 2731 11 27 0 0 0 0
OW 22 118 0 4 3 0 0 0
VODI 18 466 2 9 16 0 0 0
ODI 34 151 2 77 16 0 0 0
CDI 0 10 3 49 82 0 0 0
VCDI 0 0 0 49 107 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 18947 1213 2 3 0 0 0 0
OW 0 11 3 5 0 0 0 0
VODI 0 7 1 1 0 0 0 0
ODI 0 5 2 9 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 18947 1197 0 2 0 0 0 0
OW 0 23 2 4 0 0 0 0
VODI 0 11 4 2 0 0 0 0
ODI 0 5 2 10 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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