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: 2024-02-01

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: 2024-02-05

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 62 8 2 0 0 0 0
OW 0 55 18 60 0 0 0 0
VODI 0 27 18 115 20 0 0 0
ODI 0 4 14 118 72 7 0 0
CDI 0 26 36 200 141 186 66 0
VCDI 0 1 6 95 280 900 5808 28557
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 41 14 4 0 0 0 0
OW 0 26 6 35 0 0 0 0
VODI 0 18 3 44 16 0 0 0
ODI 0 20 2 50 25 3 0 0
CDI 0 43 30 189 129 117 42 0
VCDI 0 27 45 268 343 973 5832 28557

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 77 3042
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 77 3042

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 8 770 9200
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 8 770 9200

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 0 285 5368
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 0 285 5368

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 3 0 1
VCDI 0 0 0 0 16 258 1034 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 0 0
VCDI 0 0 0 0 16 260 1034 3988

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6 65 0 0 0 0 0 0
OW 6 182 26 18 0 0 0 0
VODI 0 44 4 33 3 0 0 0
ODI 0 22 5 19 36 0 0 0
CDI 0 89 27 67 191 127 13 0
VCDI 0 0 3 167 395 1971 2788 10
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 6 0 0 0 0 0 0
OW 12 127 0 0 0 0 0 0
VODI 0 67 18 37 22 2 0 0
ODI 0 20 7 13 28 7 0 0
CDI 0 42 4 15 67 82 11 0
VCDI 0 140 36 239 508 2007 2790 10

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4058 3454 20 5 0 0 0 0
OW 13 589 79 85 2 0 0 0
VODI 0 96 16 227 37 2 0 0
ODI 0 139 17 116 154 3 0 0
CDI 0 239 59 89 209 318 12 0
VCDI 0 0 4 73 159 442 606 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4047 3198 20 5 0 0 0 0
OW 24 448 26 137 30 0 0 0
VODI 0 295 33 121 61 4 0 0
ODI 0 114 27 61 91 20 0 0
CDI 0 175 24 128 159 229 83 0
VCDI 0 287 65 143 220 512 535 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 4713 2893 18 5 0 0 0 0
OW 0 355 123 96 6 0 0 0
VODI 0 19 39 198 41 0 0 0
ODI 0 0 8 105 75 2 0 0
CDI 0 0 0 63 294 168 0 0
VCDI 0 0 0 0 61 1137 1277 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4713 2745 21 9 0 0 0 0
OW 0 275 80 69 2 0 0 0
VODI 0 186 37 114 11 0 0 0
ODI 0 60 28 96 38 3 0 0
CDI 0 1 22 171 250 83 0 0
VCDI 0 0 0 8 176 1221 1277 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 7217 3161 101 104 11 0 0 0
OW 0 59 106 163 57 1 0 0
VODI 0 0 10 181 91 18 0 0
ODI 0 0 3 51 154 55 0 0
CDI 0 0 0 27 155 270 20 0
VCDI 0 0 0 3 54 388 527 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7217 3041 119 130 15 0 0 0
OW 0 165 69 187 90 19 0 0
VODI 0 11 19 111 117 50 0 0
ODI 0 3 6 45 96 40 3 0
CDI 0 0 6 35 135 145 8 0
VCDI 0 0 1 21 69 478 536 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 0 0 0 0 0 0
VODI 0 0 0 18 11 0 0 0
ODI 0 0 0 4 60 24 0 0
CDI 0 0 0 0 17 197 63 0
VCDI 0 0 0 0 7 284 3016 2102
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 2 3 0 0 0
ODI 0 0 0 20 49 57 5 1
CDI 0 0 0 0 37 121 250 8
VCDI 0 0 0 0 6 327 2824 2093

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 26 8 4
VCDI 0 0 0 0 0 579 3663 4258
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 2 0 0
CDI 0 0 0 0 0 36 29 3
VCDI 0 0 0 0 0 567 3642 4259

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7435 3758 39 18 0 0 0 0
OW 68 257 145 126 0 0 0 0
VODI 1 5 18 388 118 0 0 0
ODI 0 0 2 65 309 6 0 0
CDI 0 0 0 12 248 710 38 0
VCDI 0 0 0 13 70 995 902 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7475 3492 16 21 0 0 0 0
OW 29 386 96 82 1 0 0 0
VODI 0 124 69 286 34 0 0 0
ODI 0 12 17 152 239 5 0 0
CDI 0 4 1 52 353 542 20 0
VCDI 0 2 5 29 118 1164 920 0


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