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: 2020-04-02

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-04-06

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 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 8 4 0
CDI 0 0 0 0 8 53 39 0
VCDI 0 0 0 0 12 198 4413 32167
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 5 0
ODI 0 0 0 0 0 0 15 0
CDI 0 0 0 0 0 5 54 0
VCDI 0 0 0 0 20 254 4382 32167

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 20 11 0
VCDI 0 0 0 0 1 162 1088 1851
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 13 14 0
VCDI 0 0 0 0 1 169 1085 1851

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 23 0 0
ODI 0 0 0 0 27 44 0 0
CDI 0 0 0 0 45 106 49 0
VCDI 0 0 0 0 27 336 3668 5657
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 14 0 0
ODI 0 0 0 0 19 45 0 0
CDI 0 0 0 0 38 71 30 0
VCDI 0 0 0 0 42 379 3687 5657

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 5 0
CDI 0 0 0 0 0 112 55 0
VCDI 0 0 0 0 0 127 2146 3209
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 15 0
ODI 0 0 0 0 0 0 19 0
CDI 0 0 0 0 0 14 41 0
VCDI 0 0 0 0 0 225 2131 3209

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 1 17
CDI 0 0 0 0 0 9 45 139
VCDI 0 0 0 0 0 73 2908 4054
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 2 32
CDI 0 0 0 0 0 9 35 119
VCDI 0 0 0 0 0 73 2917 4059

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 1 0 0
CDI 0 0 0 0 0 38 17 0
VCDI 0 0 0 0 0 121 3062 2087
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 32 25 0
VCDI 0 0 0 0 0 128 3054 2087

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 1 1 0 0
CDI 0 0 0 0 0 43 14 3
VCDI 0 0 0 0 0 234 3851 2184
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 1 0 0
CDI 0 0 0 0 0 11 19 4
VCDI 0 0 0 0 1 266 3846 2183

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2029 3981 70 293 200 75 9 0
OW 0 38 9 113 117 63 21 0
VODI 0 0 0 28 172 151 30 0
ODI 0 0 0 0 47 187 28 0
CDI 0 0 0 0 50 238 55 0
VCDI 0 0 0 0 30 642 2646 9
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2029 3907 57 283 254 129 23 0
OW 0 104 17 76 95 115 26 0
VODI 0 8 5 71 108 148 44 0
ODI 0 0 0 4 79 134 46 0
CDI 0 0 0 0 29 196 87 0
VCDI 0 0 0 0 51 634 2563 9

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4247 3489 27 241 65 15 3 0
OW 0 28 2 114 64 10 9 0
VODI 0 2 3 64 143 28 10 0
ODI 0 0 0 14 118 55 10 0
CDI 0 0 0 0 130 139 33 0
VCDI 0 0 0 0 40 716 1848 29
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4247 3491 28 279 136 22 5 0
OW 0 25 3 79 71 36 10 0
VODI 0 3 1 58 85 66 14 0
ODI 0 0 0 9 91 56 10 0
CDI 0 0 0 8 99 76 37 0
VCDI 0 0 0 0 78 707 1837 29

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8587 3094 16 42 19 0 0 0
OW 0 126 21 88 42 2 0 0
VODI 0 34 10 141 162 58 0 0
ODI 0 2 3 36 175 97 0 0
CDI 0 0 0 8 73 96 28 0
VCDI 0 0 0 0 14 8 6 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8587 3139 25 96 68 3 0 0
OW 0 57 13 74 77 27 0 0
VODI 0 52 7 60 108 59 7 0
ODI 0 8 4 40 89 89 14 0
CDI 0 0 1 45 126 81 13 0
VCDI 0 0 0 0 17 2 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 0 53 1 3 0 0 0 0
OW 0 43 1 7 1 0 0 0
VODI 0 42 6 15 13 2 0 0
ODI 0 40 3 31 27 4 0 0
CDI 0 21 8 42 57 43 11 0
VCDI 0 0 3 65 255 1011 3428 567
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 39 0 0 0 0 0 0
OW 0 34 2 8 1 0 0 0
VODI 0 43 1 14 8 0 0 0
ODI 0 46 8 20 19 0 0 0
CDI 0 33 7 58 32 26 3 0
VCDI 0 4 4 63 293 1034 3436 567

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 7 1 0 0
VODI 0 0 0 0 44 23 1 0
ODI 0 0 0 0 45 135 8 0
CDI 0 0 0 0 43 254 96 0
VCDI 0 0 0 0 68 647 4298 2917
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 10 4 0 0
VODI 0 0 0 0 37 16 2 0
ODI 0 0 0 0 30 103 6 0
CDI 0 0 0 0 18 221 46 0
VCDI 0 0 0 0 112 716 4349 2917

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12548 3725 36 122 73 0 0 0
OW 0 337 26 242 134 1 0 0
VODI 0 70 15 127 248 44 2 0
ODI 0 0 0 19 262 130 5 0
CDI 0 0 0 0 141 275 20 0
VCDI 0 0 0 0 130 991 486 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12548 3743 42 170 177 0 0 0
OW 0 361 26 165 120 19 0 0
VODI 0 28 9 166 265 123 3 0
ODI 0 0 0 9 146 156 8 0
CDI 0 0 0 0 94 140 21 0
VCDI 0 0 0 0 186 1003 481 0


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