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: 2020-02-20

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-02-24

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 0 0 0 13 0 0 0
OW 0 0 0 0 9 1 0 0
VODI 0 0 0 0 14 12 0 0
ODI 0 0 0 0 4 34 0 0
CDI 0 0 0 0 1 57 25 0
VCDI 0 0 0 0 15 569 6186 29962
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 16 0 0 0
OW 0 0 0 0 8 2 0 0
VODI 0 0 0 0 14 8 0 0
ODI 0 0 0 0 2 27 0 0
CDI 0 0 0 0 1 43 1 0
VCDI 0 0 0 0 15 593 6210 29962

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 4
VCDI 0 0 0 0 0 54 260 2815
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 4
VCDI 0 0 0 0 0 54 260 2815

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 0
VCDI 0 0 0 0 0 0 0 5654
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 5654

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 0
VCDI 0 0 0 0 0 0 0 7246

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 1 8 7 0
CDI 0 0 0 0 9 83 62 7
VCDI 0 0 0 0 10 169 2146 2824
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 2 4 0
CDI 0 0 0 0 6 37 65 12
VCDI 0 0 0 0 14 221 2146 2819

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 0 148 10 45 0 0 0 0
VODI 0 117 10 113 114 4 0 0
ODI 0 90 13 112 146 59 10 0
CDI 0 149 14 72 166 256 33 0
VCDI 0 19 3 26 139 837 3358 268
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 3 0 0 0 0 0 0
OW 0 61 1 7 2 0 0 0
VODI 0 105 10 44 86 18 0 0
ODI 0 63 8 72 48 66 5 0
CDI 0 84 2 58 114 107 23 0
VCDI 0 207 29 187 315 965 3373 268

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3425 3743 41 230 110 14 0 0
OW 0 174 20 145 57 18 0 0
VODI 0 91 20 189 67 27 4 0
ODI 0 12 4 47 78 32 7 0
CDI 0 8 4 41 68 109 14 0
VCDI 0 0 1 13 115 889 1514 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3425 3452 33 188 132 22 0 0
OW 0 301 10 78 41 28 2 0
VODI 0 215 31 243 53 36 5 0
ODI 0 35 9 71 51 36 8 0
CDI 0 18 3 37 56 90 13 0
VCDI 0 7 4 48 162 877 1511 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 4959 3533 18 114 76 0 0 0
OW 0 137 6 44 42 0 0 0
VODI 0 34 13 157 42 12 0 0
ODI 0 1 1 70 89 12 0 0
CDI 0 0 0 8 166 57 3 0
VCDI 0 0 0 0 86 430 1503 83
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4959 3344 16 120 83 0 0 0
OW 0 208 3 15 38 5 0 0
VODI 0 130 13 57 20 10 0 0
ODI 0 22 4 127 34 16 0 0
CDI 0 1 2 64 143 28 11 2
VCDI 0 0 0 10 183 452 1495 81

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8377 3194 31 150 121 25 0 0
OW 0 121 12 21 29 11 0 0
VODI 0 43 17 101 51 15 0 0
ODI 0 2 3 33 87 48 1 0
CDI 0 0 0 13 56 95 74 0
VCDI 0 0 0 0 30 46 181 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8377 3180 36 168 151 35 0 0
OW 0 117 8 29 33 26 1 0
VODI 0 50 12 66 50 49 3 0
ODI 0 11 4 33 41 34 28 0
CDI 0 2 3 19 59 58 138 0
VCDI 0 0 0 3 40 38 86 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 2 0 0 0 0
OW 0 0 0 9 0 0 0 0
VODI 0 0 0 6 7 0 0 0
ODI 0 0 0 4 15 10 0 0
CDI 0 0 0 2 60 29 1 0
VCDI 0 0 0 0 101 517 2185 2855
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 4 0 0 0 0
OW 0 0 0 5 2 0 0 0
VODI 0 0 0 5 6 4 0 0
ODI 0 0 0 5 5 12 0 0
CDI 0 0 0 3 11 22 1 0
VCDI 0 0 0 1 159 518 2185 2855

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 0 0 0
CDI 0 0 0 0 0 0 0 5
VCDI 0 0 0 0 0 101 2023 6458
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 10
VCDI 0 0 0 0 0 101 2022 6453

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10395 4668 82 321 198 1 0 0
OW 0 26 11 188 177 20 0 0
VODI 0 1 1 144 316 42 0 0
ODI 0 0 0 4 291 143 0 0
CDI 0 0 0 0 227 456 6 0
VCDI 0 0 0 0 88 1474 929 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10395 4689 88 394 276 17 0 0
OW 0 6 6 141 151 30 0 0
VODI 0 0 0 92 211 63 0 0
ODI 0 0 0 30 242 115 1 0
CDI 0 0 0 0 270 386 10 0
VCDI 0 0 0 0 147 1525 924 0


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