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: 2021-02-18

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-02-22

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 0 482 4 18 0 0 0 0
OW 0 87 2 14 7 0 0 0
VODI 0 56 6 34 25 0 0 0
ODI 0 27 0 25 29 9 1 0
CDI 0 19 6 39 183 190 24 8
VCDI 0 111 15 110 341 754 4410 29866
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 471 3 18 1 0 0 0
OW 0 61 8 19 8 0 0 0
VODI 0 54 0 39 15 0 0 0
ODI 0 35 1 17 37 10 1 0
CDI 0 42 0 29 83 44 27 7
VCDI 0 119 21 118 441 899 4407 29867

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 2 0
VCDI 0 0 0 0 0 39 610 2482
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 39 612 2482

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 0 0 0
VCDI 0 0 0 0 0 0 0 9982
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 9982

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 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 5652
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 5652

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 47
VCDI 0 0 0 0 0 0 0 7199
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 13
VCDI 0 0 0 0 0 0 0 7233

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 0 0 0 1 16
VCDI 0 0 0 0 0 100 2123 4091
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 2 9
VCDI 0 0 0 0 0 100 2122 4098

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2540 3206 45 181 230 15 2 0
OW 0 158 8 59 129 7 3 0
VODI 0 123 12 66 184 20 5 0
ODI 0 30 13 80 157 46 6 0
CDI 0 9 2 67 229 121 11 0
VCDI 0 0 0 6 182 792 2563 24
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2540 3286 46 193 195 19 5 0
OW 0 145 11 62 128 8 4 0
VODI 0 66 18 112 176 23 11 0
ODI 0 22 3 61 205 37 9 0
CDI 0 7 2 25 197 115 8 0
VCDI 0 0 0 6 210 799 2553 24

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5839 2859 8 11 0 0 0 0
OW 0 167 8 29 4 0 0 0
VODI 0 126 3 28 27 0 0 0
ODI 0 83 4 17 31 2 0 0
CDI 0 64 6 56 42 67 6 0
VCDI 0 19 6 128 269 590 1166 31
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5839 2826 8 9 0 0 0 0
OW 0 192 6 30 4 0 0 0
VODI 0 133 4 26 23 0 0 0
ODI 0 79 4 26 27 2 0 0
CDI 0 71 9 55 36 37 2 0
VCDI 0 17 4 123 283 620 1170 31

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8489 3129 35 119 100 4 0 0
OW 0 146 15 27 5 0 0 0
VODI 0 66 13 64 31 0 0 0
ODI 0 11 11 19 89 68 29 0
CDI 0 0 3 27 89 107 82 0
VCDI 0 0 0 4 48 80 78 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8489 3074 35 123 103 4 0 0
OW 0 126 7 17 14 0 0 0
VODI 0 106 7 21 25 6 2 0
ODI 0 41 27 45 34 24 7 0
CDI 0 5 1 54 180 189 159 0
VCDI 0 0 0 0 6 36 21 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 0 0 21 11 0 0 0
OW 0 0 0 0 15 0 0 0
VODI 0 0 0 0 31 2 0 0
ODI 0 0 0 0 33 9 0 0
CDI 0 0 0 0 33 27 0 0
VCDI 0 0 0 0 26 379 3038 2178
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 19 8 0 0 0
OW 0 0 0 2 16 0 0 0
VODI 0 0 0 0 26 2 0 0
ODI 0 0 0 0 39 9 0 0
CDI 0 0 0 0 32 26 0 0
VCDI 0 0 0 0 28 380 3038 2178

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 56 14 0
CDI 0 0 0 0 0 171 78 0
VCDI 0 0 0 0 0 194 3049 5025
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 40 6 0
CDI 0 0 0 0 0 146 70 0
VCDI 0 0 0 0 0 235 3065 5025

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11578 4513 69 311 48 0 0 0
OW 0 11 11 145 115 0 0 0
VODI 0 0 2 53 212 2 0 0
ODI 0 0 0 21 178 22 0 0
CDI 0 0 0 7 257 178 3 0
VCDI 0 0 0 1 185 1366 869 52
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11578 4515 65 322 44 0 0 0
OW 0 9 15 134 124 0 0 0
VODI 0 0 2 54 205 3 0 0
ODI 0 0 0 17 187 25 0 0
CDI 0 0 0 9 229 189 0 0
VCDI 0 0 0 2 206 1351 872 52


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