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: 2024-01-25

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: 2024-01-29

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 0 107 0 0 0 0 0 0
OW 0 96 1 2 0 0 0 0
VODI 0 24 14 3 0 0 0 0
ODI 0 13 10 10 7 1 0 0
CDI 0 20 31 94 60 16 0 0
VCDI 0 0 0 36 244 606 6218 29289
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 106 0 0 0 0 0 0
OW 0 50 0 0 0 0 0 0
VODI 0 32 0 2 0 0 0 0
ODI 0 23 10 2 4 0 0 0
CDI 0 43 26 42 27 17 0 0
VCDI 0 6 20 99 280 606 6218 29289

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 1
VCDI 0 0 0 0 0 3 92 3021
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 1
VCDI 0 0 0 0 0 3 92 3021

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 9978
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 0 0 9973

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 0 256 5397
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 0 256 5397

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 7224
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 7224

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 6 51 756 4484
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 6 52 757 4484

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 85 0 0 0 0 0 0
VODI 0 54 1 3 0 0 0 0
ODI 0 14 2 5 3 3 0 0
CDI 0 42 4 23 7 30 4 0
VCDI 0 39 24 99 181 630 4654 410
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 52 0 0 0 0 0 0
ODI 0 58 0 2 1 2 0 0
CDI 0 26 0 7 4 25 2 0
VCDI 0 98 31 121 186 636 4656 410

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4102 2937 5 5 2 0 0 0
OW 17 757 85 40 5 0 0 0
VODI 6 148 34 210 37 2 0 0
ODI 0 72 8 54 102 7 0 0
CDI 0 128 74 205 186 99 0 0
VCDI 0 11 5 61 295 640 983 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4100 2769 3 11 2 0 0 0
OW 6 423 15 14 4 0 0 0
VODI 11 390 64 106 27 2 0 0
ODI 8 143 25 112 56 4 0 0
CDI 0 176 47 88 121 46 0 0
VCDI 0 152 57 244 417 696 983 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 4984 2821 48 35 0 0 0 0
OW 0 378 85 78 4 0 0 0
VODI 0 20 22 157 35 0 0 0
ODI 0 18 11 67 78 1 0 0
CDI 0 19 17 108 217 130 5 0
VCDI 0 0 0 8 186 1119 1045 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4984 2760 38 27 0 0 0 0
OW 0 206 30 47 3 0 0 0
VODI 0 164 31 68 15 0 0 0
ODI 0 59 41 72 30 2 0 0
CDI 0 55 33 183 246 49 0 0
VCDI 0 12 10 56 226 1199 1050 0

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7344 3226 82 65 11 0 0 0
OW 0 113 125 163 42 0 0 0
VODI 0 0 9 206 65 11 0 0
ODI 0 0 0 64 137 29 0 0
CDI 0 0 0 21 122 136 0 0
VCDI 0 0 0 2 78 505 431 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7344 3183 81 82 11 0 0 0
OW 0 132 88 125 46 0 0 0
VODI 0 24 36 135 75 21 0 0
ODI 0 0 11 99 82 22 0 0
CDI 0 0 0 77 106 103 0 0
VCDI 0 0 0 3 135 535 431 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 24 3 10 13 0 0 0
VODI 0 4 11 30 49 3 0 0
ODI 0 0 1 6 60 109 1 0
CDI 0 0 0 3 47 246 72 0
VCDI 0 0 0 0 2 242 2714 2153
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1 0 0 0 0 0 0
OW 0 12 7 22 32 27 0 0
VODI 0 13 2 12 54 104 1 0
ODI 0 2 4 8 33 69 4 0
CDI 0 0 2 5 31 133 200 8
VCDI 0 0 0 2 21 267 2582 2145

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 5 9 36 2
VCDI 0 0 0 0 22 309 4235 3920
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 2 12 44 0
VCDI 0 0 0 0 25 306 4227 3922

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8273 3343 13 2 0 0 0 0
OW 7 251 181 86 2 0 0 0
VODI 0 8 32 431 157 0 0 0
ODI 0 0 0 108 254 6 0 0
CDI 0 0 0 11 390 293 0 0
VCDI 0 0 0 0 80 1333 485 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8273 3235 13 0 0 0 0 0
OW 6 297 142 128 5 0 0 0
VODI 1 68 50 292 147 0 0 0
ODI 0 2 21 148 202 7 0 0
CDI 0 0 0 70 375 191 0 0
VCDI 0 0 0 0 154 1434 485 0


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