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: 2021-02-25

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-03-01

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 0 379 14 48 11 0 0 0
OW 0 58 7 45 16 0 0 0
VODI 0 20 4 74 44 0 0 0
ODI 0 6 1 29 61 17 3 0
CDI 0 9 0 13 79 51 14 0
VCDI 0 3 2 33 232 744 5397 29488
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 350 12 55 15 0 0 0
OW 0 35 5 34 17 0 0 0
VODI 0 33 6 26 34 0 0 0
ODI 0 29 1 19 29 11 0 0
CDI 0 14 2 35 35 24 0 0
VCDI 0 14 2 73 313 777 5414 29488

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 10 153 2970
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 10 153 2970

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 56 995 4603
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 56 995 4603

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 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 67 809 4450
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 0 0
VCDI 0 0 0 0 0 66 809 4450

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 0 0 0 0
CDI 0 0 0 3 17 39 4 0
VCDI 0 33 5 85 272 381 4543 949
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 5 40 5 0
VCDI 0 33 5 88 284 379 4542 949

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2785 3654 32 100 6 0 0 0
OW 0 240 26 82 24 0 0 0
VODI 0 198 32 238 76 0 0 0
ODI 0 76 9 176 226 16 0 0
CDI 0 46 1 30 272 134 2 0
VCDI 0 64 5 99 307 870 1505 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2785 3582 30 94 10 0 0 0
OW 0 220 23 84 22 0 0 0
VODI 0 198 22 174 70 1 0 0
ODI 0 90 18 168 145 18 0 0
CDI 0 67 3 75 281 89 2 0
VCDI 0 121 9 130 383 912 1505 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 4906 3390 24 66 0 0 0 0
OW 0 57 23 122 15 0 0 0
VODI 0 2 4 152 60 0 0 0
ODI 0 0 0 55 123 4 0 0
CDI 0 0 0 10 244 133 0 0
VCDI 0 0 0 0 41 555 1571 139
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4906 3335 35 98 7 0 0 0
OW 0 76 7 107 18 0 0 0
VODI 0 38 7 101 69 6 0 0
ODI 0 0 2 64 93 16 0 0
CDI 0 0 0 35 196 71 10 0
VCDI 0 0 0 0 100 599 1561 139

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8307 3085 32 142 137 35 0 0
OW 0 192 12 22 6 0 0 0
VODI 0 66 28 63 17 0 0 0
ODI 0 1 5 69 54 5 0 0
CDI 0 0 0 12 164 151 15 0
VCDI 0 0 0 0 8 146 214 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8307 3136 38 150 138 33 0 0
OW 0 155 13 37 16 2 0 0
VODI 0 49 21 60 47 4 0 0
ODI 0 4 5 47 68 21 0 0
CDI 0 0 0 14 117 179 95 0
VCDI 0 0 0 0 0 98 134 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 11 1 0 0 0
OW 0 0 0 2 9 0 0 0
VODI 0 0 0 0 15 0 0 0
ODI 0 0 0 0 22 0 0 0
CDI 0 0 0 0 29 27 2 0
VCDI 0 0 0 0 20 593 3179 1893
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 7 2 0 0 0
OW 0 0 0 6 9 0 0 0
VODI 0 0 0 0 16 0 0 0
ODI 0 0 0 0 18 0 0 0
CDI 0 0 0 0 11 12 0 0
VCDI 0 0 0 0 40 608 3181 1893

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 38 0 0
VCDI 0 0 0 0 0 786 3150 4613
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 63 0 0
VCDI 0 0 0 0 0 761 3150 4613

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11126 4586 60 270 35 0 0 0
OW 4 39 14 211 104 0 0 0
VODI 0 0 0 69 280 8 0 0
ODI 0 0 0 7 287 54 0 0
CDI 0 0 0 0 237 367 0 0
VCDI 0 0 0 0 148 1874 429 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11130 4616 64 306 47 0 0 0
OW 0 9 9 178 122 0 0 0
VODI 0 0 1 61 284 8 0 0
ODI 0 0 0 12 242 82 0 0
CDI 0 0 0 0 220 318 0 0
VCDI 0 0 0 0 176 1895 429 0


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