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: 2022-07-14

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-07-18

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 0 842 12 19 0 0 0 0
OW 0 52 13 92 0 0 0 0
VODI 0 0 4 185 50 0 0 0
ODI 0 0 1 53 1581 144 0 0
CDI 0 0 2 69 3481 14552 1076 0
VCDI 0 0 0 0 280 8288 5951 155
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 692 6 8 0 0 0 0
OW 0 105 2 54 0 0 0 0
VODI 0 54 15 119 66 8 0 0
ODI 0 28 2 90 774 409 0 0
CDI 0 15 7 147 3797 12944 1546 0
VCDI 0 0 0 0 755 9623 5481 155

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 35 16 166 3 0 0 0
OW 0 0 0 47 14 0 0 0
VODI 0 0 0 49 34 0 0 0
ODI 0 0 0 11 104 34 0 0
CDI 0 0 0 0 383 795 63 0
VCDI 0 0 0 4 318 410 647 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 34 15 160 3 0 0 0
OW 0 1 1 52 23 0 0 0
VODI 0 0 0 50 21 8 0 0
ODI 0 0 0 6 34 95 14 0
CDI 0 0 0 5 102 668 49 0
VCDI 0 0 0 4 673 468 647 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 0 352 14 100 0 0 0 0
OW 0 124 3 98 0 0 0 0
VODI 0 100 23 341 55 0 0 0
ODI 0 119 4 154 967 3 0 0
CDI 0 35 0 0 2074 1395 0 0
VCDI 0 0 0 0 3 2267 1749 2
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 154 10 97 0 0 0 0
OW 0 65 0 77 0 0 0 0
VODI 0 163 15 195 29 0 0 0
ODI 0 245 14 264 464 2 0 0
CDI 0 103 5 60 2217 1053 0 0
VCDI 0 0 0 0 389 2610 1749 2

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 875 2070 29 127 0 0 0 0
OW 1 109 25 220 0 0 0 0
VODI 0 2 4 673 98 0 0 0
ODI 0 0 0 40 981 0 0 0
CDI 0 0 0 0 372 28 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 875 1919 26 153 0 0 0 0
OW 1 228 22 300 1 0 0 0
VODI 0 34 10 497 81 0 0 0
ODI 0 0 0 110 372 0 0 0
CDI 0 0 0 0 997 28 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 0 890 6 3 0 0 0 0
OW 0 198 30 108 6 0 0 0
VODI 0 20 13 451 170 6 0 0
ODI 0 0 0 30 1718 134 0 0
CDI 0 0 0 0 384 2992 86 0
VCDI 0 0 0 1 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 0 888 11 15 0 0 0 0
OW 0 179 25 149 8 2 0 0
VODI 0 37 10 318 375 25 0 0
ODI 0 4 3 98 1043 484 21 0
CDI 0 0 0 13 845 2621 65 0
VCDI 0 0 0 0 7 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 70 1848 19 48 0 0 0 0
OW 7 349 58 224 0 0 0 0
VODI 0 1 9 424 18 0 0 0
ODI 0 0 0 44 355 56 0 0
CDI 0 0 0 0 226 859 139 0
VCDI 0 0 0 0 0 6 566 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 75 1704 12 105 0 0 0 0
OW 2 304 33 228 6 0 0 0
VODI 0 188 29 226 14 0 0 0
ODI 0 2 12 160 213 198 7 0
CDI 0 0 0 21 366 723 633 0
VCDI 0 0 0 0 0 0 65 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 2976 1992 29 192 7 0 0 0
OW 59 56 21 160 14 2 0 0
VODI 0 10 4 234 53 4 0 0
ODI 0 7 0 63 148 9 0 0
CDI 0 2 1 8 104 175 0 0
VCDI 0 0 0 0 1 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 2952 1983 33 245 16 0 0 0
OW 83 62 15 130 28 2 0 0
VODI 0 12 4 176 48 7 0 0
ODI 0 5 2 75 96 12 0 0
CDI 0 5 1 31 138 168 0 0
VCDI 0 0 0 0 1 1 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 10945 386 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 10945 386 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 7464 2575 24 114 45 0 0 0
OW 0 92 9 85 33 1 0 0
VODI 0 14 4 131 95 5 0 0
ODI 0 0 0 80 366 29 0 0
CDI 0 0 0 19 251 251 0 0
VCDI 0 0 0 0 0 9 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7464 2543 20 99 57 0 0 0
OW 0 115 11 102 57 1 0 0
VODI 0 23 6 116 124 3 0 0
ODI 0 0 0 36 220 36 0 0
CDI 0 0 0 76 309 158 0 0
VCDI 0 0 0 0 23 97 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 11542 1378 9 35 2 0 0 0
OW 5 8 0 7 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 11538 1368 9 25 1 0 0 0
OW 9 18 0 17 3 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 142 3649 30 171 41 0 0 0
OW 0 44 40 184 17 0 0 0
VODI 0 0 0 297 210 5 0 0
ODI 0 0 0 12 697 101 0 0
CDI 0 0 0 1 68 94 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 142 3596 34 194 47 0 0 0
OW 0 92 26 159 48 5 0 0
VODI 0 5 10 287 256 5 0 0
ODI 0 0 0 12 527 108 0 0
CDI 0 0 0 13 155 82 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 3859 2963 52 483 134 0 0 0
OW 0 54 14 369 178 0 0 0
VODI 0 9 3 277 89 0 0 0
ODI 0 0 0 9 82 0 0 0
CDI 0 0 0 0 12 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 3859 2970 55 684 214 0 0 0
OW 0 56 12 362 125 0 0 0
VODI 0 0 2 75 86 0 0 0
ODI 0 0 0 14 41 0 0 0
CDI 0 0 0 3 29 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 18172 1579 6 87 1 0 0 0
OW 0 53 13 34 8 0 0 0
VODI 0 0 0 95 79 0 0 0
ODI 0 0 0 0 80 2 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 18172 1600 11 110 6 0 0 0
OW 0 27 3 57 37 0 0 0
VODI 0 5 5 49 118 2 0 0
ODI 0 0 0 0 7 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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