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: 2023-10-12

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: 2023-10-16

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 0 534 49 14 0 0 0 0
OW 0 185 150 138 6 0 0 0
VODI 0 10 67 491 96 4 0 0
ODI 0 0 2 193 399 26 0 0
CDI 0 0 0 133 581 1183 12 3
VCDI 0 0 0 5 191 1465 11628 19337
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 441 30 17 0 0 0 0
OW 0 182 63 74 23 15 0 0
VODI 0 87 103 301 367 53 0 0
ODI 0 18 43 196 275 296 0 0
CDI 0 1 29 251 205 844 622 0
VCDI 0 0 0 135 403 1470 11018 19340

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 780 665 26 49 3 0 0 0
OW 0 121 27 42 9 0 0 0
VODI 0 4 2 53 32 1 0 0
ODI 0 0 0 8 53 1 0 0
CDI 0 0 0 13 31 63 13 0
VCDI 0 0 0 2 29 145 947 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 780 602 27 54 5 0 0 0
OW 0 144 2 46 23 1 0 0
VODI 0 42 19 29 43 0 0 0
ODI 0 2 5 8 27 27 0 0
CDI 0 0 2 14 25 47 25 0
VCDI 0 0 0 16 34 135 935 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 2129 2279 64 43 0 0 0 0
OW 0 188 103 169 19 0 0 0
VODI 0 5 21 257 132 15 0 0
ODI 0 0 0 43 376 41 1 2
CDI 0 0 0 11 216 924 34 16
VCDI 0 0 0 0 34 478 2132 246
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2129 2192 99 235 93 16 1 0
OW 0 134 14 63 152 52 7 0
VODI 0 115 36 36 100 152 26 0
ODI 0 28 31 76 61 195 26 0
CDI 0 3 8 102 291 499 173 0
VCDI 0 0 0 11 80 544 1934 264

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2818 1661 78 58 4 0 0 0
OW 0 30 19 95 22 0 0 0
VODI 0 0 0 105 80 1 0 0
ODI 0 0 0 10 133 21 0 0
CDI 0 0 0 0 43 474 0 0
VCDI 0 0 0 0 0 1 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2818 1655 62 56 21 0 0 0
OW 0 36 33 137 88 6 0 0
VODI 0 0 2 75 121 106 0 0
ODI 0 0 0 0 33 209 0 0
CDI 0 0 0 0 19 167 0 0
VCDI 0 0 0 0 0 9 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 343 3932 255 256 0 0 0 0
OW 0 297 134 228 2 0 0 0
VODI 0 5 10 348 165 0 0 0
ODI 0 0 0 55 471 31 0 0
CDI 0 0 0 1 117 322 0 0
VCDI 0 0 0 0 0 121 131 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 335 3929 277 285 6 0 0 0
OW 8 285 106 334 67 0 0 0
VODI 0 19 16 263 506 22 0 0
ODI 0 1 0 6 176 191 0 0
CDI 0 0 0 0 0 122 0 0
VCDI 0 0 0 0 0 139 131 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 35 1948 203 187 27 0 0 0
OW 0 68 4 130 35 0 0 0
VODI 0 2 1 29 114 2 0 0
ODI 0 0 0 0 124 36 0 0
CDI 0 0 0 0 43 244 0 0
VCDI 0 0 0 0 0 581 1486 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 35 1904 183 311 57 0 0 0
OW 0 105 23 33 127 15 0 0
VODI 0 9 2 2 107 92 0 0
ODI 0 0 0 0 41 102 6 0
CDI 0 0 0 0 11 189 25 0
VCDI 0 0 0 0 0 465 1455 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 3516 1957 75 41 0 0 0 0
OW 1 6 18 171 22 0 0 0
VODI 0 0 0 108 133 0 0 0
ODI 0 0 0 3 113 5 0 0
CDI 0 0 0 0 80 37 0 0
VCDI 0 0 0 0 20 11 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3513 1956 66 133 40 0 0 0
OW 4 7 23 102 80 0 0 0
VODI 0 0 4 77 72 0 0 0
ODI 0 0 0 11 57 10 0 0
CDI 0 0 0 0 90 23 0 0
VCDI 0 0 0 0 29 20 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 10339 957 4 1 0 0 0 0
OW 0 20 0 1 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 10339 946 3 0 0 0 0 0
OW 0 21 1 2 0 0 0 0
VODI 0 10 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

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6580 2296 39 1 0 0 0 0
OW 0 123 67 86 1 0 0 0
VODI 0 13 19 129 53 0 0 0
ODI 0 4 9 60 132 16 0 0
CDI 0 0 0 37 206 286 27 0
VCDI 0 0 0 0 42 1064 406 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6580 2284 40 9 0 0 0 0
OW 0 81 47 82 14 0 0 0
VODI 0 50 20 102 92 46 0 0
ODI 0 17 17 38 88 33 0 0
CDI 0 4 10 72 135 173 83 0
VCDI 0 0 0 10 105 1114 350 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 12113 801 33 12 1 0 0 0
OW 0 0 1 21 3 0 0 0
VODI 0 0 0 2 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 12113 801 34 20 1 0 0 0
OW 0 0 0 15 3 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 4775 631 8 28 0 0 0 0
OW 0 56 34 17 0 0 0 0
VODI 0 0 7 44 1 2 0 0
ODI 0 0 0 33 11 6 0 0
CDI 0 0 0 4 47 3 1 0
VCDI 0 0 0 0 41 51 3 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4775 600 7 28 0 0 0 0
OW 0 49 7 5 0 0 0 0
VODI 0 34 6 15 0 3 0 0
ODI 0 4 25 32 2 6 0 0
CDI 0 0 4 38 40 6 2 0
VCDI 0 0 0 8 58 47 2 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 8538 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8538 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 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 15746 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15746 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 0


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