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: 2023-07-27

Model: ARC-MFC PHYS (TOPAZ)

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

Model vs. observations, sea ice class contingency tables

Date: 2023-07-31

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 0 136 59 39 0 0 0 0
OW 0 4 78 199 5 0 0 0
VODI 0 0 0 1176 175 2 0 0
ODI 0 0 0 116 5566 300 0 0
CDI 0 0 0 11 654 14337 597 0
VCDI 0 0 0 0 0 617 8600 4231
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 128 85 194 5 0 0 0
OW 0 10 47 336 42 0 0 0
VODI 0 2 5 875 1423 15 0 0
ODI 0 0 0 109 4373 4485 16 0
CDI 0 0 0 27 557 10718 7846 1623
VCDI 0 0 0 0 0 38 1335 2608

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 293 430 34 44 1 0 0 0
OW 0 21 12 117 19 0 0 0
VODI 0 2 0 159 234 0 0 0
ODI 0 0 0 21 528 20 0 0
CDI 0 0 0 11 321 702 4 0
VCDI 0 0 0 0 19 62 79 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 293 401 35 120 18 0 0 0
OW 0 30 10 64 78 0 0 0
VODI 0 19 1 121 385 0 0 0
ODI 0 3 0 31 260 9 0 0
CDI 0 0 0 16 292 674 20 0
VCDI 0 0 0 0 89 101 63 0

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 135 2876 123 64 0 0 0 0
OW 0 32 86 311 1 0 0 0
VODI 0 2 1 1621 325 0 0 0
ODI 0 0 0 52 3902 5 0 0
CDI 0 0 0 0 210 236 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 135 2794 113 109 1 0 0 0
OW 0 112 85 887 100 0 0 0
VODI 0 4 12 1036 1270 0 0 0
ODI 0 0 0 16 2172 0 0 0
CDI 0 0 0 0 895 241 0 0
VCDI 0 0 0 0 0 0 0 0

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 725 2042 265 313 0 0 0 0
OW 0 21 86 512 0 0 0 0
VODI 0 0 0 1488 46 0 0 0
ODI 0 0 0 26 130 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 725 1925 255 556 0 0 0 0
OW 0 124 74 1056 1 0 0 0
VODI 0 14 22 727 151 0 0 0
ODI 0 0 0 0 22 0 0 0
CDI 0 0 0 0 2 0 0 0
VCDI 0 0 0 0 0 0 0 0

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 53 2375 181 81 0 0 0 0
OW 0 22 128 386 3 0 0 0
VODI 0 1 2 1138 203 0 0 0
ODI 0 1 0 37 2529 26 0 0
CDI 0 0 0 0 9 71 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 53 2217 152 214 0 0 0 0
OW 0 174 151 502 50 0 0 0
VODI 0 7 8 901 1097 0 0 0
ODI 0 1 0 25 1597 97 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 764 1945 52 11 0 0 0 0
OW 0 54 52 130 0 0 0 0
VODI 0 4 0 265 62 0 0 0
ODI 0 0 0 17 543 20 0 0
CDI 0 0 0 0 87 1294 26 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 763 1895 38 28 2 0 0 0
OW 1 98 56 167 21 0 0 0
VODI 0 10 10 206 360 34 0 0
ODI 0 0 0 18 263 424 0 0
CDI 0 0 0 4 46 856 26 0
VCDI 0 0 0 0 0 0 0 0

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 131 4052 317 137 17 0 0 0
OW 0 7 45 243 14 0 0 0
VODI 0 0 0 456 199 0 0 0
ODI 0 0 0 14 498 34 0 0
CDI 0 0 0 1 16 150 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 131 3991 277 162 38 0 0 0
OW 0 67 69 244 39 0 0 0
VODI 0 1 16 401 268 24 0 0
ODI 0 0 0 44 393 59 0 0
CDI 0 0 0 0 6 101 0 0
VCDI 0 0 0 0 0 0 0 0

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8452 2626 73 67 1 0 0 0
OW 0 0 7 37 5 0 0 0
VODI 0 0 0 35 9 0 0 0
ODI 0 0 0 1 18 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 8452 2607 63 81 4 0 0 0
OW 0 19 16 28 6 0 0 0
VODI 0 0 1 31 21 0 0 0
ODI 0 0 0 0 2 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 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 6625 2648 144 195 14 0 0 0
OW 0 3 24 279 23 0 0 0
VODI 0 0 0 659 207 1 0 0
ODI 0 0 0 65 488 12 0 0
CDI 0 0 0 0 77 160 72 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 6625 2645 157 313 15 0 0 0
OW 0 6 11 528 93 0 0 0
VODI 0 0 0 268 326 0 0 0
ODI 0 0 0 89 279 41 1 0
CDI 0 0 0 0 96 132 71 0
VCDI 0 0 0 0 0 0 0 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 12121 863 4 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12121 863 4 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 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 297 4771 258 219 48 3 0 0
OW 0 29 8 82 28 0 0 0
VODI 0 2 1 27 12 0 0 0
ODI 0 0 0 12 6 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 297 4762 258 260 68 3 0 0
OW 0 34 6 50 11 0 0 0
VODI 0 6 3 23 7 0 0 0
ODI 0 0 0 7 6 0 0 0
CDI 0 0 0 0 2 0 0 0
VCDI 0 0 0 0 0 0 0 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 7420 669 33 72 7 0 0 0
OW 0 4 19 46 46 0 0 0
VODI 0 0 1 90 95 0 0 0
ODI 0 0 0 2 77 0 0 0
CDI 0 0 0 0 6 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 7420 663 34 77 8 0 0 0
OW 0 6 16 48 102 0 0 0
VODI 0 4 3 82 110 0 0 0
ODI 0 0 0 3 11 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 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 19977 232 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 19977 232 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 0


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