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: 2023-11-16

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: 2023-11-20

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 2 0 0 0 0 0 0
VODI 0 3 1 0 0 0 0 0
ODI 0 0 2 4 0 0 0 0
CDI 0 0 0 30 34 13 1 0
VCDI 0 0 0 7 25 268 5329 31183
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 1 0 0 0 0 0 0
CDI 0 4 2 21 15 10 5 1
VCDI 0 0 1 20 44 271 5325 31182

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 9 17 0 0
VODI 0 0 0 0 51 35 0 0
ODI 0 0 0 0 8 31 0 0
CDI 0 0 0 0 3 120 0 4
VCDI 0 0 0 0 0 407 1238 1196
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 33 40 0 0
VODI 0 0 0 0 37 42 0 0
ODI 0 0 0 0 0 37 0 0
CDI 0 0 0 0 0 47 0 10
VCDI 0 0 0 0 1 444 1238 1190

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 2 0 0
ODI 0 0 0 0 0 34 0 0
CDI 0 0 0 0 0 328 3 2
VCDI 0 0 0 0 0 537 2899 6173
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 84 0 0
ODI 0 0 0 0 0 189 0 0
CDI 0 0 0 0 0 287 17 0
VCDI 0 0 0 0 0 341 2885 6175

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 1860 62 25 0 0 0 0
OW 0 76 93 139 0 0 0 0
VODI 0 5 3 243 120 4 0 0
ODI 0 0 1 25 195 104 0 0
CDI 0 0 0 4 36 357 54 0
VCDI 0 0 0 0 0 139 1773 335
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1807 57 36 0 0 0 0
OW 0 134 88 167 32 0 0 0
VODI 0 0 14 201 140 172 9 0
ODI 0 0 0 29 112 167 60 0
CDI 0 0 0 3 65 184 158 0
VCDI 0 0 0 0 2 81 1600 335

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 1 0 0
VCDI 0 0 0 0 0 19 1810 5394
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 0
VCDI 0 0 0 0 0 20 1808 5394

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 14 1254 4031
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 14 1254 4031

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 903 104 116 0 0 0 0
OW 0 34 55 123 14 0 0 0
VODI 0 0 0 282 25 0 0 0
ODI 0 1 0 37 217 4 0 0
CDI 0 4 0 1 88 278 0 0
VCDI 0 3 0 0 13 300 2165 1550
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 902 111 144 2 0 0 0
OW 0 35 44 159 10 0 0 0
VODI 0 1 4 205 45 0 0 0
ODI 0 1 0 40 117 3 0 0
CDI 0 5 0 10 135 256 3 0
VCDI 0 1 0 1 48 323 2162 1550

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6480 2784 34 52 0 0 0 0
OW 0 147 87 74 3 0 0 0
VODI 0 3 10 208 42 0 0 0
ODI 0 0 0 23 206 25 0 0
CDI 0 0 0 2 95 530 49 0
VCDI 0 0 0 0 1 221 246 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6480 2717 53 84 1 0 0 0
OW 0 165 26 87 18 0 0 0
VODI 0 50 47 80 86 1 0 0
ODI 0 2 5 84 86 47 0 0
CDI 0 0 0 24 133 508 104 0
VCDI 0 0 0 0 23 220 191 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 5142 2310 14 4 0 0 0 0
OW 0 199 93 51 1 0 0 0
VODI 0 7 35 252 49 0 0 0
ODI 0 1 3 79 184 4 0 0
CDI 0 0 0 13 180 432 51 4
VCDI 0 0 0 0 9 166 2008 405
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5142 2212 24 9 0 0 0 0
OW 0 208 42 67 0 0 0 0
VODI 0 81 61 116 28 0 0 0
ODI 0 13 11 150 96 0 0 0
CDI 0 3 7 56 284 332 85 1
VCDI 0 0 0 1 15 270 1974 408

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9863 2122 69 214 123 0 0 0
OW 0 7 14 32 86 26 0 0
VODI 0 0 1 48 57 85 0 0
ODI 0 0 0 9 59 20 0 0
CDI 0 0 0 0 35 117 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9863 2116 62 199 86 0 0 0
OW 0 13 18 44 144 89 0 0
VODI 0 0 4 36 31 42 0 0
ODI 0 0 0 24 65 44 0 0
CDI 0 0 0 0 34 73 0 0
VCDI 0 0 0 0 0 0 0 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 412 1519 71 53 3 0 0 0
OW 0 76 66 158 14 0 0 0
VODI 0 3 7 468 120 0 0 0
ODI 0 0 0 111 738 18 0 0
CDI 0 0 0 1 279 226 2 0
VCDI 0 0 0 10 134 981 333 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 412 1443 68 84 11 0 0 0
OW 0 154 73 238 20 0 0 0
VODI 0 1 3 337 168 0 0 0
ODI 0 0 0 83 327 20 0 0
CDI 0 0 0 48 491 119 0 0
VCDI 0 0 0 11 271 1086 335 0

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6759 934 2 0 0 0 0 0
OW 108 205 10 13 0 0 0 0
VODI 6 22 12 81 0 0 0 0
ODI 0 0 0 35 73 0 0 0
CDI 0 0 0 10 87 25 0 0
VCDI 0 0 0 4 121 31 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6734 852 2 0 0 0 0 0
OW 124 201 6 13 0 0 0 0
VODI 15 98 5 39 2 0 0 0
ODI 0 10 11 33 40 0 0 0
CDI 0 0 0 45 103 18 0 0
VCDI 0 0 0 13 136 38 0 0

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15572 165 0 0 0 0 0 0
OW 8 1 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15571 165 0 0 0 0 0 0
OW 9 1 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 0


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