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: 2024-03-14

Model: ARC-MFC PHYS (TOPAZ)

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2024-03-18

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 8 0 0
ODI 0 0 0 0 2 27 0 0
CDI 0 0 0 0 14 211 11 0
VCDI 0 0 0 0 0 238 6281 30110
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 11 0 0
ODI 0 0 0 0 3 52 0 0
CDI 0 0 0 0 13 247 504 0
VCDI 0 0 0 0 0 174 5788 30110

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 0 320 2799
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 0 320 2799

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 8 500 9470
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 8 500 9466

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 0 161 1890 3602
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 0 161 1890 3602

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 2
VCDI 0 0 0 0 0 0 0 7222
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 15
VCDI 0 0 0 0 0 0 0 7209

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 6 16 0
VCDI 0 0 0 0 0 69 1852 3356
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 10 10 0
VCDI 0 0 0 0 0 65 1858 3356

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 1 1 0 0 0 0 0
OW 0 44 23 13 0 0 0 0
VODI 0 3 10 33 1 0 0 0
ODI 0 1 2 22 9 0 0 0
CDI 0 0 9 23 8 8 1 0
VCDI 0 0 0 70 102 281 3965 1687
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 13 9 7 0 0 0 0
VODI 0 25 6 19 0 0 0 0
ODI 0 9 15 26 6 0 0 0
CDI 0 2 8 21 5 1 1 0
VCDI 0 0 7 88 109 288 3965 1687

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2756 3452 43 70 2 0 0 0
OW 0 333 156 99 13 0 0 0
VODI 0 5 55 399 55 0 0 0
ODI 0 0 7 81 357 82 0 0
CDI 0 0 0 59 172 1125 143 0
VCDI 0 0 0 7 159 650 1042 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2756 3272 41 89 14 0 0 0
OW 0 386 74 76 15 0 0 0
VODI 0 122 109 313 85 5 0 0
ODI 0 10 23 112 296 234 0 0
CDI 0 0 14 86 123 886 352 0
VCDI 0 0 0 39 225 732 833 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 4031 3035 68 71 6 0 0 0
OW 0 186 106 202 56 0 0 0
VODI 0 4 11 164 165 2 0 0
ODI 0 0 0 39 137 45 0 0
CDI 0 0 0 12 165 259 31 0
VCDI 0 0 0 0 39 574 1837 451
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4031 2828 68 78 4 0 0 0
OW 0 363 81 138 61 0 0 0
VODI 0 33 33 168 120 2 0 0
ODI 0 1 3 71 125 22 0 0
CDI 0 0 0 33 191 290 63 0
VCDI 0 0 0 0 67 566 1805 451

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7368 3106 161 244 4 0 0 0
OW 0 1 31 212 36 0 0 0
VODI 0 0 0 177 125 0 0 0
ODI 0 0 0 60 117 12 0 0
CDI 0 0 0 19 116 132 1 0
VCDI 0 0 0 9 225 466 365 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7368 3103 173 319 11 0 0 0
OW 0 4 18 159 99 0 0 0
VODI 0 0 1 121 105 8 0 0
ODI 0 0 0 65 64 45 0 0
CDI 0 0 0 32 118 166 5 0
VCDI 0 0 0 25 226 391 361 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 0 0 0 0 0
OW 0 0 1 0 1 0 0 0
VODI 0 0 1 6 43 0 0 0
ODI 0 0 0 20 65 1 0 0
CDI 0 0 0 4 61 208 34 3
VCDI 0 0 0 0 19 124 2035 3177
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 1 0 18 0 0 0
ODI 0 0 1 8 48 1 1 0
CDI 0 0 0 22 108 152 119 111
VCDI 0 0 0 0 15 180 1949 3069

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 1
VCDI 0 0 0 0 0 163 1722 6652
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 0 163 1722 6653

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6141 4428 68 102 7 0 0 0
OW 41 372 121 159 69 0 0 0
VODI 0 12 36 329 91 13 0 0
ODI 0 0 0 112 212 47 0 0
CDI 0 0 0 29 283 352 43 0
VCDI 0 0 0 0 269 589 1662 159
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6162 4308 65 102 10 0 0 0
OW 20 361 63 122 93 8 0 0
VODI 0 131 50 133 47 38 0 0
ODI 0 11 39 206 75 51 15 0
CDI 0 1 8 168 440 293 79 0
VCDI 0 0 0 0 266 611 1611 159


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