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: 2022-08-11

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-08-15

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 52 2180 12 11 0 0 0 0
OW 0 384 41 118 1 0 0 0
VODI 0 130 30 1195 317 0 0 0
ODI 0 0 0 292 5728 420 0 0
CDI 0 0 0 0 1834 9603 2042 0
VCDI 0 0 0 0 0 770 9195 2547
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 52 2151 11 14 4 0 0 0
OW 0 313 28 95 11 0 0 0
VODI 0 207 36 848 702 19 0 0
ODI 0 23 8 652 3841 1010 69 0
CDI 0 0 0 7 3322 9047 5202 71
VCDI 0 0 0 0 0 717 5966 2476

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 292 648 10 86 5 0 0 0
OW 0 134 8 54 13 0 0 0
VODI 0 55 16 352 77 0 0 0
ODI 0 0 0 31 194 7 0 0
CDI 0 0 1 2 71 773 67 0
VCDI 0 0 0 5 36 196 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 292 651 10 104 42 0 0 0
OW 0 104 8 71 18 0 0 0
VODI 0 81 15 264 51 0 0 0
ODI 0 1 1 84 180 15 0 0
CDI 0 0 1 1 41 759 67 0
VCDI 0 0 0 6 64 202 0 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 63 1946 33 137 0 0 0 0
OW 0 310 17 191 7 0 0 0
VODI 0 134 18 961 227 0 0 0
ODI 0 0 0 354 2178 63 0 0
CDI 0 0 0 0 577 2009 635 0
VCDI 0 0 0 0 0 4 118 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 63 1946 36 168 0 0 0 0
OW 0 160 12 286 35 0 0 0
VODI 0 247 11 386 455 2 0 0
ODI 0 37 9 672 1087 186 0 0
CDI 0 0 0 131 1412 1888 753 0
VCDI 0 0 0 0 0 0 0 0

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2352 2429 4 24 0 0 0 0
OW 0 289 11 41 2 0 0 0
VODI 0 47 13 209 20 0 0 0
ODI 0 0 0 2 211 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 2352 2511 5 39 1 0 0 0
OW 0 210 11 44 1 0 0 0
VODI 0 44 12 168 52 0 0 0
ODI 0 0 0 25 179 0 0 0
CDI 0 0 0 0 0 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 912 2202 18 56 0 0 0 0
OW 0 211 39 136 6 0 0 0
VODI 0 8 8 403 167 0 0 0
ODI 0 0 0 26 2058 131 0 0
CDI 0 0 0 0 67 798 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 912 2200 18 131 16 0 0 0
OW 0 181 29 99 67 0 0 0
VODI 0 40 18 360 463 0 0 0
ODI 0 0 0 31 1726 714 0 0
CDI 0 0 0 0 26 215 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 1401 2271 28 34 0 0 0 0
OW 0 34 18 126 1 0 0 0
VODI 0 4 1 149 108 0 0 0
ODI 0 0 0 12 872 56 0 0
CDI 0 0 0 0 99 112 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 1401 2153 14 12 0 0 0 0
OW 0 117 20 79 0 0 0 0
VODI 0 39 13 168 164 0 0 0
ODI 0 0 0 62 646 26 0 0
CDI 0 0 0 0 270 142 0 0
VCDI 0 0 0 0 0 0 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 4713 1422 3 10 1 0 0 0
OW 0 33 6 29 2 0 0 0
VODI 0 0 4 58 23 0 0 0
ODI 0 0 0 7 20 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 4713 1439 3 13 1 0 0 0
OW 0 16 9 30 5 0 0 0
VODI 0 0 1 46 25 0 0 0
ODI 0 0 0 15 15 0 0 0
CDI 0 0 0 0 0 0 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 11240 91 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 11240 91 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 8436 1856 18 105 24 0 0 0
OW 0 44 2 60 28 0 0 0
VODI 0 6 4 180 97 2 0 0
ODI 0 0 0 42 270 55 0 0
CDI 0 0 0 0 163 296 8 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 8436 1869 19 158 63 0 0 0
OW 0 31 2 40 59 0 0 0
VODI 0 6 3 123 129 33 0 0
ODI 0 0 0 57 137 92 0 0
CDI 0 0 0 9 194 228 8 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 4921 732 7 59 25 0 0 0
OW 1 2 1 23 0 0 0 0
VODI 0 3 3 23 1 0 0 0
ODI 0 0 0 2 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 4918 732 7 66 25 0 0 0
OW 4 3 2 20 0 0 0 0
VODI 0 2 2 18 1 0 0 0
ODI 0 0 0 3 0 0 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 8087 489 5 6 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 8087 489 5 6 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

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 19847 347 3 12 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 19847 347 3 12 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


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