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: 2022-07-28

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-08-01

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 49 1511 6 6 0 0 0 0
OW 0 155 36 139 0 0 0 0
VODI 0 26 17 477 148 1 0 0
ODI 0 0 0 200 2592 395 0 0
CDI 0 0 0 0 2380 16792 582 0
VCDI 0 0 0 0 0 2008 5529 3853
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 49 1463 11 31 0 0 0 0
OW 0 125 23 136 13 0 0 0
VODI 0 85 14 240 218 17 0 0
ODI 0 18 9 246 1494 576 4 0
CDI 0 1 2 169 3395 15979 1121 9
VCDI 0 0 0 0 0 2624 4986 3844

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 31 435 20 44 0 0 0 0
OW 0 39 6 38 8 0 0 0
VODI 0 12 2 106 95 0 0 0
ODI 0 1 1 138 555 13 0 0
CDI 0 16 7 77 201 325 53 0
VCDI 0 0 0 5 20 58 827 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 31 393 16 42 3 0 0 0
OW 0 54 6 38 12 1 0 0
VODI 0 35 4 52 153 11 0 0
ODI 0 4 2 66 306 28 0 0
CDI 0 1 1 97 298 275 162 0
VCDI 0 16 7 113 107 81 718 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 17 1383 34 74 0 0 0 0
OW 0 67 11 180 6 0 0 0
VODI 0 3 2 386 134 0 0 0
ODI 0 0 0 59 1412 54 0 0
CDI 0 0 0 0 1398 2936 40 0
VCDI 0 0 0 0 0 673 1056 57
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 17 1371 30 117 3 0 0 0
OW 0 72 14 166 32 0 0 0
VODI 0 10 3 286 308 0 0 0
ODI 0 0 0 130 928 159 0 0
CDI 0 0 0 0 1679 2754 58 0
VCDI 0 0 0 0 0 750 1038 57

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1149 2858 14 40 5 0 0 0
OW 0 216 39 126 2 0 0 0
VODI 0 22 10 758 74 0 0 0
ODI 0 0 0 20 308 0 0 0
CDI 0 0 0 0 13 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 1149 2819 19 38 5 0 0 0
OW 0 204 21 176 1 0 0 0
VODI 0 66 19 476 38 0 0 0
ODI 0 7 4 254 269 0 0 0
CDI 0 0 0 0 89 0 0 0
VCDI 0 0 0 0 0 0 0 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 50 1784 11 20 0 0 0 0
OW 0 259 42 157 6 0 0 0
VODI 0 27 12 749 210 0 0 0
ODI 0 2 0 20 2930 23 0 0
CDI 0 0 0 0 211 733 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 50 1282 7 20 0 0 0 0
OW 0 520 19 72 9 0 0 0
VODI 0 250 32 430 214 0 0 0
ODI 0 20 7 424 2098 0 0 0
CDI 0 0 0 0 1036 756 0 0
VCDI 0 0 0 0 0 0 0 0

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 946 2608 15 30 0 0 0 0
OW 0 63 16 68 13 0 0 0
VODI 0 5 7 103 74 0 0 0
ODI 0 0 0 9 384 24 0 0
CDI 0 0 0 0 80 876 0 0
VCDI 0 0 0 0 0 5 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 946 2579 18 56 7 0 0 0
OW 0 89 8 55 52 0 0 0
VODI 0 8 12 80 128 0 0 0
ODI 0 0 0 19 283 87 0 0
CDI 0 0 0 0 81 775 0 0
VCDI 0 0 0 0 0 43 0 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 4026 1848 20 118 0 0 0 0
OW 0 20 5 43 5 0 0 0
VODI 0 2 4 45 34 1 0 0
ODI 0 0 0 9 87 11 0 0
CDI 0 0 0 0 13 40 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 4026 1849 12 125 2 0 0 0
OW 0 21 13 38 9 0 0 0
VODI 0 0 4 44 61 4 0 0
ODI 0 0 0 8 63 21 0 0
CDI 0 0 0 0 4 27 0 0
VCDI 0 0 0 0 0 0 0 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 11271 60 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 11271 60 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

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7884 2373 24 157 1 0 0 0
OW 0 74 6 74 13 1 0 0
VODI 0 17 4 252 97 3 0 0
ODI 0 0 0 91 207 16 0 0
CDI 0 0 0 12 246 140 4 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 7884 2387 25 188 8 1 0 0
OW 0 51 5 80 41 0 0 0
VODI 0 26 4 106 100 3 0 0
ODI 0 0 0 129 101 22 0 0
CDI 0 0 0 83 314 134 4 0
VCDI 0 0 0 0 0 0 0 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 12988 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 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 12988 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 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 1145 3570 48 221 23 0 0 0
OW 0 76 19 216 7 0 0 0
VODI 0 30 3 243 103 0 0 0
ODI 0 7 1 19 71 1 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 1139 3553 49 268 25 0 0 0
OW 6 90 19 278 27 0 0 0
VODI 0 25 2 131 131 0 0 0
ODI 0 15 1 22 21 1 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 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 5508 2828 41 143 0 0 0 0
OW 0 9 6 28 0 0 0 0
VODI 0 0 1 23 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 5508 2816 41 148 0 0 0 0
OW 0 18 3 24 0 0 0 0
VODI 0 3 4 22 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 19397 749 12 42 6 0 0 0
OW 0 0 0 1 2 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 19397 749 12 37 6 0 0 0
OW 0 0 0 6 2 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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