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: 2021-03-04

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-03-08

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 0 363 8 46 11 0 0 0
OW 0 30 3 29 14 0 0 0
VODI 0 20 3 20 46 5 0 0
ODI 0 10 3 16 39 11 0 0
CDI 0 1 3 21 38 30 6 0
VCDI 0 0 0 20 141 480 4827 30658
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 344 7 50 10 0 0 0
OW 0 34 4 23 23 0 0 0
VODI 0 22 4 18 49 5 0 0
ODI 0 11 0 18 31 13 0 0
CDI 0 11 1 14 33 36 2 0
VCDI 0 2 4 29 143 472 4831 30658

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 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 71 439 2623
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 0 0 0
VCDI 0 0 0 0 0 71 439 2623

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 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 6 6 0
VCDI 0 0 0 0 0 165 2371 7434
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 3 1 0
VCDI 0 0 0 0 0 168 2376 7434

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 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 0 29 0 0
ODI 0 0 0 0 6 37 8 0
CDI 0 0 0 0 14 101 17 0
VCDI 0 0 0 0 9 272 2069 3092
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 32 2 0
ODI 0 0 0 0 2 43 6 0
CDI 0 0 0 0 16 84 25 1
VCDI 0 0 0 0 11 280 2061 3091

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 0 0 0
VCDI 0 0 0 0 0 0 0 7246
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 0 0 2
VCDI 0 0 0 0 0 0 0 7244

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 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 5326
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 0 0 0
VCDI 0 0 0 0 0 0 0 5326

Kara 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 1 3 0 17 1
VCDI 0 0 0 71 213 290 3952 1783
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 3 25 7
VCDI 0 0 0 72 216 287 3944 1777

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2265 3397 46 247 215 6 0 0
OW 0 92 26 84 124 18 0 0
VODI 0 45 4 122 175 44 4 0
ODI 0 27 3 53 215 71 5 0
CDI 0 6 3 59 238 280 24 0
VCDI 0 0 0 52 171 1026 2184 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2265 3374 54 263 226 14 0 0
OW 0 76 15 90 120 18 4 0
VODI 0 49 5 87 176 47 6 0
ODI 0 31 1 26 163 62 16 0
CDI 0 28 3 29 151 189 31 0
VCDI 0 9 4 122 302 1115 2160 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 4715 3357 15 66 1 0 0 0
OW 0 95 7 91 18 0 0 0
VODI 0 33 11 80 69 0 0 0
ODI 0 2 5 49 98 0 0 0
CDI 0 0 0 45 134 25 0 0
VCDI 0 0 0 3 169 863 1629 116
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4715 3253 13 45 3 0 0 0
OW 0 120 4 59 12 0 0 0
VODI 0 77 6 67 40 0 0 0
ODI 0 32 9 53 55 0 0 0
CDI 0 5 6 70 104 2 0 0
VCDI 0 0 0 40 275 886 1629 116

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7945 3426 30 101 84 13 0 0
OW 0 99 21 72 10 1 0 0
VODI 0 14 6 134 40 0 0 0
ODI 0 0 2 30 126 0 0 0
CDI 0 0 0 7 211 158 5 0
VCDI 0 0 0 0 26 355 72 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7945 3421 29 107 87 11 0 0
OW 0 96 17 55 9 3 0 0
VODI 0 16 10 121 41 0 0 0
ODI 0 6 3 44 95 1 0 0
CDI 0 0 0 17 193 133 6 0
VCDI 0 0 0 0 72 379 71 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 0 3 3 8 0 0 0 0
OW 0 0 0 7 1 0 0 0
VODI 0 0 0 15 2 0 0 0
ODI 0 0 0 6 19 1 0 0
CDI 0 0 0 18 40 8 0 0
VCDI 0 0 0 26 240 1003 2685 1718
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 3 2 4 0 0 0 0
OW 0 0 1 5 0 0 0 0
VODI 0 0 0 13 0 0 0 0
ODI 0 0 0 12 8 0 0 0
CDI 0 0 0 6 34 3 0 0
VCDI 0 0 0 40 260 1009 2685 1718

Hudson Bay:

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 12 0 0
CDI 0 0 0 0 0 176 95 2
VCDI 0 0 0 0 3 699 3860 3740
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 0 150 80 1
VCDI 0 0 0 0 3 737 3875 3741

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12182 4145 19 36 1 0 0 0
OW 0 312 37 158 11 0 0 0
VODI 0 98 19 322 134 0 0 0
ODI 0 37 7 115 362 7 0 0
CDI 0 19 7 45 213 60 7 0
VCDI 0 0 1 22 338 764 694 37
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12182 4163 28 58 2 0 0 0
OW 0 281 28 173 14 0 0 0
VODI 0 117 15 245 143 0 0 0
ODI 0 39 11 107 366 15 0 0
CDI 0 10 6 70 163 58 6 0
VCDI 0 1 2 45 371 758 695 37


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