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: 2022-09-22

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-09-26

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 382 4055 43 117 20 0 0 0
OW 0 208 45 305 71 0 0 0
VODI 0 35 18 298 347 14 0 0
ODI 0 9 4 80 621 119 0 0
CDI 0 1 1 28 481 2467 83 0
VCDI 0 0 0 0 20 8343 18131 556
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 382 3133 30 144 56 3 0 0
OW 0 697 22 136 94 14 0 0
VODI 0 358 32 280 355 78 0 0
ODI 0 82 11 115 430 440 17 0
CDI 0 34 15 120 407 1164 343 0
VCDI 0 4 1 33 218 9244 17854 556

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 108 1267 25 69 0 0 0 0
OW 0 16 3 19 7 0 0 0
VODI 0 59 9 124 154 0 0 0
ODI 0 1 0 0 84 13 0 0
CDI 0 0 0 0 4 26 0 0
VCDI 0 0 0 4 16 162 963 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 108 1219 27 73 14 0 0 0
OW 0 88 8 112 155 0 0 0
VODI 0 32 1 23 47 7 0 0
ODI 0 4 1 4 30 32 0 0
CDI 0 0 0 0 2 0 1 0
VCDI 0 0 0 4 17 162 962 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 1181 2769 44 292 63 0 0 0
OW 0 131 23 251 79 1 0 0
VODI 0 13 9 220 240 9 0 0
ODI 0 0 0 16 726 85 0 0
CDI 0 0 0 0 100 745 43 0
VCDI 0 0 0 0 0 275 2132 535
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1181 2439 35 349 141 19 0 0
OW 0 290 12 166 127 42 0 0
VODI 0 178 26 223 263 91 0 0
ODI 0 6 3 41 487 115 6 0
CDI 0 0 0 0 190 395 55 0
VCDI 0 0 0 0 0 453 2114 535

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5240 414 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 5240 412 0 0 0 0 0 0
OW 0 2 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

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2075 3430 13 18 0 0 0 0
OW 0 453 44 186 7 0 0 0
VODI 0 18 9 227 146 0 0 0
ODI 0 0 0 6 292 10 0 0
CDI 0 0 0 0 6 261 6 0
VCDI 0 0 0 0 0 3 36 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2075 3150 7 26 0 0 0 0
OW 0 630 43 229 88 0 0 0
VODI 0 118 14 144 230 8 0 0
ODI 0 3 2 38 131 95 0 0
CDI 0 0 0 0 2 171 42 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 2463 2034 8 9 0 0 0 0
OW 0 94 6 23 3 0 0 0
VODI 0 15 7 59 13 0 0 0
ODI 0 0 0 17 61 0 0 0
CDI 0 0 0 0 55 188 25 0
VCDI 0 0 0 0 0 112 134 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2463 1784 7 10 3 0 0 0
OW 0 155 0 2 0 0 0 0
VODI 0 177 9 16 0 0 0 0
ODI 0 21 4 54 11 0 0 0
CDI 0 6 1 26 117 79 4 0
VCDI 0 0 0 0 1 221 155 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 4901 1416 2 11 0 0 0 0
OW 0 1 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 4901 1408 2 11 0 0 0 0
OW 0 9 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

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 8385 1921 7 42 5 0 0 0
OW 0 55 9 113 7 0 0 0
VODI 0 3 2 265 30 0 0 0
ODI 0 0 0 104 174 3 0 0
CDI 0 0 0 4 280 115 0 0
VCDI 0 0 0 0 102 70 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8385 1867 7 36 0 0 0 0
OW 0 86 5 99 8 0 0 0
VODI 0 26 5 164 38 0 0 0
ODI 0 0 1 130 65 10 0 0
CDI 0 0 0 99 196 82 0 0
VCDI 0 0 0 0 291 96 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 4666 901 13 31 12 0 0 0
OW 0 3 1 22 21 1 0 0
VODI 0 0 0 10 31 0 0 0
ODI 0 0 0 0 21 7 0 0
CDI 0 0 0 0 37 26 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 4666 904 13 49 45 0 0 0
OW 0 0 1 14 17 1 0 0
VODI 0 0 0 0 3 0 0 0
ODI 0 0 0 0 50 15 0 0
CDI 0 0 0 0 7 18 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 7918 665 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 7918 665 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 20095 109 2 3 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 20095 109 2 3 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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