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: 2024-01-18

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: 2024-01-22

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 31 0 0 0 0 0 0
OW 0 43 13 0 0 0 0 0
VODI 0 8 7 9 0 0 0 0
ODI 0 5 1 10 0 0 0 0
CDI 0 1 10 48 46 15 2 5
VCDI 0 0 0 1 27 192 3266 33162
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 24 0 0 0 0 0 0
OW 0 30 1 0 0 0 0 0
VODI 0 10 13 0 0 0 0 0
ODI 0 8 3 15 0 0 0 0
CDI 0 12 3 19 32 12 11 16
VCDI 0 4 11 34 41 195 3257 33151

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 6 392 2721
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 6 392 2721

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 82 1636 8260
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 82 1636 8260

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 66 1229 4358
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 66 1229 4358

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 9 899 6316
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 9 899 6316

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 1 1 0
VCDI 0 0 0 0 0 13 1297 3987
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 1 1 2
VCDI 0 0 0 0 0 13 1297 3985

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 45 9 0 0 0 0 0
VODI 0 9 11 5 2 0 0 0
ODI 0 0 5 28 6 0 0 0
CDI 0 0 0 16 63 48 9 0
VCDI 0 0 0 0 31 243 3879 1908
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 5 0 0 0 0 0 0
ODI 0 42 16 2 3 0 0 0
CDI 0 7 9 47 47 32 2 0
VCDI 0 0 0 0 52 259 3886 1908

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3021 3398 50 19 0 0 0 0
OW 0 238 180 162 10 0 0 0
VODI 0 25 24 314 113 6 0 0
ODI 0 6 3 145 153 25 0 0
CDI 0 4 2 37 134 350 53 0
VCDI 0 0 1 13 82 394 2359 1
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3021 3206 48 51 3 0 0 0
OW 0 310 120 104 48 4 0 0
VODI 0 116 61 227 84 17 0 0
ODI 0 31 23 151 130 55 1 0
CDI 0 8 8 126 121 334 320 0
VCDI 0 0 0 31 106 365 2091 1

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4673 2961 35 19 0 0 0 0
OW 0 395 41 74 4 0 0 0
VODI 0 74 51 81 25 0 0 0
ODI 0 16 18 81 43 2 0 0
CDI 0 15 19 149 262 95 0 0
VCDI 0 0 2 21 124 996 1343 77
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4673 2813 35 46 0 0 0 0
OW 0 238 17 44 6 0 0 0
VODI 0 179 17 33 23 0 0 0
ODI 0 108 21 42 25 1 0 0
CDI 0 76 53 200 240 61 0 0
VCDI 0 47 23 60 164 1031 1343 77

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 3168 106 185 9 0 0 0
OW 0 79 67 131 34 0 0 0
VODI 0 0 18 161 62 3 0 0
ODI 0 0 0 65 114 15 0 0
CDI 0 0 0 21 187 304 8 0
VCDI 0 0 0 0 14 596 272 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7368 3018 115 231 35 0 0 0
OW 0 216 32 125 56 2 0 0
VODI 0 13 40 99 69 14 0 0
ODI 0 0 4 75 63 42 0 0
CDI 0 0 0 33 163 202 8 0
VCDI 0 0 0 0 34 658 272 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 0 235 12 3 0 0 0 0
OW 0 98 53 39 6 0 0 0
VODI 0 1 5 104 25 0 0 0
ODI 0 0 0 31 44 3 0 0
CDI 0 0 0 8 99 180 22 0
VCDI 0 0 0 0 11 478 2510 1836
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 213 12 1 0 0 0 0
OW 0 100 33 24 9 0 0 0
VODI 0 21 21 71 17 0 0 0
ODI 0 0 4 44 21 4 2 0
CDI 0 0 0 38 103 169 168 39
VCDI 0 0 0 7 35 488 2362 1797

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 69 9 0
VCDI 0 0 0 0 0 732 4696 3032
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 0
CDI 0 0 0 0 0 41 26 0
VCDI 0 0 0 0 0 760 4678 3032

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8914 3501 64 12 0 0 0 0
OW 13 267 112 154 0 0 0 0
VODI 0 34 36 352 75 0 0 0
ODI 0 0 0 146 138 17 0 0
CDI 0 0 0 33 266 365 58 0
VCDI 0 0 0 0 303 630 256 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8927 3537 69 27 0 0 0 0
OW 0 239 104 185 1 0 0 0
VODI 0 21 36 272 75 0 0 0
ODI 0 5 3 144 96 8 0 0
CDI 0 0 0 69 233 303 44 0
VCDI 0 0 0 0 377 701 270 0


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