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: 2022-08-18

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-08-22

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 159 2956 7 7 0 0 0 0
OW 0 461 73 157 4 0 0 0
VODI 0 87 39 1589 287 0 0 0
ODI 0 0 0 187 4686 392 0 0
CDI 0 0 0 2 1691 10220 1396 0
VCDI 0 0 0 0 3 602 7690 4207
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 159 2608 12 14 0 0 0 0
OW 0 531 45 157 25 0 0 0
VODI 0 360 59 1257 628 94 8 0
ODI 0 5 3 481 3556 2066 10 0
CDI 0 0 0 33 2462 8567 2837 17
VCDI 0 0 0 0 0 487 6231 4190

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 15 1489 24 59 2 0 0 0
OW 0 173 11 62 0 0 0 0
VODI 0 15 1 97 6 0 0 0
ODI 0 2 0 4 24 1 0 0
CDI 0 0 0 16 50 158 14 0
VCDI 0 2 2 3 21 305 577 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15 1186 19 55 2 0 0 0
OW 0 280 6 63 0 0 0 0
VODI 0 150 6 82 4 0 0 0
ODI 0 49 5 18 18 2 0 0
CDI 0 14 0 12 52 198 261 0
VCDI 0 2 2 11 27 264 330 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 67 2219 22 72 0 0 0 0
OW 0 337 57 224 3 0 0 0
VODI 0 106 28 1639 168 0 0 0
ODI 0 0 0 124 1613 91 0 0
CDI 0 0 0 0 485 2007 199 0
VCDI 0 0 0 0 0 2 519 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 67 2066 28 137 0 0 0 0
OW 0 376 38 290 16 0 0 0
VODI 0 195 36 1057 215 0 0 0
ODI 0 25 5 575 1040 292 0 0
CDI 0 0 0 0 998 1808 533 0
VCDI 0 0 0 0 0 0 185 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 3274 1984 0 0 0 0 0 0
OW 0 88 20 42 0 0 0 0
VODI 0 0 0 174 17 0 0 0
ODI 0 0 0 1 54 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 3263 1770 1 6 0 0 0 0
OW 11 201 8 36 0 0 0 0
VODI 0 101 11 102 0 0 0 0
ODI 0 0 0 73 71 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 1148 2764 12 18 0 0 0 0
OW 0 314 53 174 0 0 0 0
VODI 0 37 19 889 193 0 0 0
ODI 0 0 0 43 1265 48 0 0
CDI 0 0 0 0 4 247 18 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 1148 2146 10 50 0 0 0 0
OW 0 450 14 136 36 0 0 0
VODI 0 490 44 509 181 0 0 0
ODI 0 29 16 418 961 42 0 0
CDI 0 0 0 11 284 253 18 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 1420 2306 11 20 0 0 0 0
OW 0 87 22 82 0 0 0 0
VODI 0 1 6 202 59 0 0 0
ODI 0 0 0 7 624 147 0 0
CDI 0 0 0 0 67 265 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 1420 2274 17 41 0 0 0 0
OW 0 78 12 134 16 0 0 0
VODI 0 42 10 126 280 61 0 0
ODI 0 0 0 10 371 323 0 0
CDI 0 0 0 0 83 28 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 5159 1075 5 4 0 0 0 0
OW 0 11 6 34 0 0 0 0
VODI 0 0 0 24 11 0 0 0
ODI 0 0 0 0 2 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 5159 1060 1 0 0 0 0 0
OW 0 26 10 40 0 0 0 0
VODI 0 0 0 22 6 0 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

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11331 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 11331 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

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8355 1857 18 113 6 0 0 0
OW 0 51 6 79 17 0 0 0
VODI 0 8 4 139 62 3 0 0
ODI 0 0 0 31 411 20 0 0
CDI 0 0 0 23 230 263 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 8355 1843 18 137 26 0 0 0
OW 0 56 3 90 26 0 0 0
VODI 0 17 7 97 102 4 0 0
ODI 0 0 0 24 278 32 0 0
CDI 0 0 0 37 294 250 0 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 4937 705 6 87 30 0 0 0
OW 0 10 5 7 0 0 0 0
VODI 0 0 0 9 7 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 4937 701 7 88 30 0 0 0
OW 0 13 3 4 0 0 0 0
VODI 0 1 1 11 7 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

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7606 977 3 1 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 7606 977 3 1 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 19857 340 6 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 19857 340 6 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


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