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: 2021-11-04

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-11-08

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 0 334 18 116 23 0 0 0
OW 0 13 1 37 33 0 0 0
VODI 0 4 4 41 66 4 0 0
ODI 0 0 1 46 69 13 0 0
CDI 0 0 0 34 171 94 0 0
VCDI 0 0 0 3 243 1918 7630 25986
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 291 13 81 13 0 0 0
OW 0 29 5 33 25 0 0 0
VODI 0 20 1 38 37 0 0 0
ODI 0 11 3 22 40 4 0 0
CDI 0 0 2 48 55 26 0 0
VCDI 0 0 0 55 435 1999 7630 25986

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 0 247 3 11 0 0 0 0
OW 0 14 0 23 23 0 0 0
VODI 0 0 0 65 19 0 0 0
ODI 0 0 0 20 86 49 0 0
CDI 0 0 0 0 28 152 3 0
VCDI 0 0 0 0 71 745 1514 60
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 227 3 18 20 0 0 0
OW 0 34 0 25 12 0 0 0
VODI 0 0 0 33 17 0 0 0
ODI 0 0 0 31 64 75 0 0
CDI 0 0 0 12 38 101 0 0
VCDI 0 0 0 0 76 770 1517 60

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 321 12 34 15 0 0 0
OW 0 15 5 62 39 0 0 0
VODI 0 0 1 230 223 4 0 0
ODI 0 30 10 96 717 17 0 0
CDI 0 29 2 16 214 146 0 0
VCDI 0 16 4 46 128 1070 3136 3344
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 324 11 43 47 0 0 0
OW 0 12 7 61 62 0 0 0
VODI 0 0 0 71 282 12 0 0
ODI 0 0 0 80 405 26 0 0
CDI 0 3 2 90 257 36 0 0
VCDI 0 72 14 139 283 1163 3136 3344

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 1325 47 255 112 0 0 0
OW 0 45 24 254 66 6 0 0
VODI 0 2 1 58 254 33 0 0
ODI 0 0 0 4 150 196 4 0
CDI 0 0 0 0 65 257 69 0
VCDI 0 0 0 0 41 678 1479 229
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1198 44 330 181 6 0 0
OW 0 126 15 141 92 39 0 0
VODI 0 45 10 50 153 79 15 0
ODI 0 3 3 43 78 96 51 0
CDI 0 0 0 7 69 178 83 0
VCDI 0 0 0 0 115 772 1403 229

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 7 22 7
VCDI 0 0 0 0 0 323 3342 3545
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 33 83 5
VCDI 0 0 0 0 0 297 3281 3547

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 14 6 0
CDI 0 0 0 0 10 93 36 0
VCDI 0 0 0 0 78 1206 3389 494
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 25 0 0
CDI 0 0 0 0 14 112 46 0
VCDI 0 0 0 0 74 1176 3385 494

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 675 1819 15 40 2 0 0 0
OW 0 105 19 101 10 0 0 0
VODI 0 32 8 177 85 1 0 0
ODI 0 0 0 43 246 7 0 0
CDI 0 0 0 3 205 166 1 0
VCDI 0 0 0 0 48 1120 1357 46
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 675 1514 2 24 3 0 0 0
OW 0 243 8 68 25 0 0 0
VODI 0 180 21 117 84 2 0 0
ODI 0 14 9 100 100 14 0 0
CDI 0 5 2 37 161 97 18 0
VCDI 0 0 0 18 223 1181 1340 46

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7782 2919 33 116 24 0 0 0
OW 0 48 7 69 44 0 0 0
VODI 0 6 2 23 96 23 0 0
ODI 0 0 0 1 42 46 0 0
CDI 0 0 0 0 2 35 0 0
VCDI 0 0 0 0 0 13 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7782 2678 28 101 27 0 0 0
OW 0 166 9 60 37 0 0 0
VODI 0 103 1 33 89 26 0 0
ODI 0 19 1 6 38 28 0 0
CDI 0 7 3 9 15 28 0 0
VCDI 0 0 0 0 2 35 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 6644 2495 15 77 12 14 0 0
OW 0 97 12 68 56 27 0 0
VODI 0 14 8 102 74 40 0 0
ODI 0 0 0 32 107 39 0 0
CDI 0 0 0 0 146 146 3 0
VCDI 0 0 0 0 16 209 1198 45
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6644 2459 14 85 65 36 0 0
OW 0 105 7 43 45 47 0 0
VODI 0 42 12 69 57 27 0 0
ODI 0 0 2 70 55 31 0 0
CDI 0 0 0 10 137 72 4 0
VCDI 0 0 0 2 52 262 1197 45

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11758 1090 11 80 0 0 0 0
OW 0 10 2 29 8 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 11758 1100 13 109 8 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 2268 1194 7 51 1 0 0 0
OW 0 118 18 85 25 7 0 0
VODI 0 64 10 304 89 45 0 0
ODI 0 0 1 131 396 53 0 0
CDI 0 0 0 34 304 110 0 0
VCDI 0 0 0 3 308 171 6 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2268 1094 19 227 88 28 0 0
OW 0 205 11 108 258 27 0 0
VODI 0 66 3 90 456 148 0 0
ODI 0 11 3 162 156 23 0 0
CDI 0 0 0 21 102 33 0 0
VCDI 0 0 0 0 63 127 6 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 6128 2327 17 71 4 0 0 0
OW 0 1 0 15 16 0 0 0
VODI 0 0 0 0 8 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 6128 2082 5 27 3 0 0 0
OW 0 210 9 39 14 0 0 0
VODI 0 36 3 20 11 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 19351 832 3 5 0 0 0 0
OW 0 9 2 2 0 0 0 0
VODI 0 0 0 5 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 19351 838 3 6 0 0 0 0
OW 0 3 2 3 0 0 0 0
VODI 0 0 0 3 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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