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: 2024-10-31

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: 2024-11-04

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 857 1966 23 0 0 0 0 0
OW 0 227 146 75 0 0 0 0
VODI 0 51 28 460 74 0 0 0
ODI 0 0 0 161 292 30 0 0
CDI 0 0 0 17 597 1437 34 0
VCDI 0 0 0 0 114 3061 10088 17164
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 857 2033 46 8 0 0 0 0
OW 0 202 106 110 7 0 0 0
VODI 0 9 45 432 127 3 0 0
ODI 0 0 0 108 203 17 0 0
CDI 0 0 0 55 360 687 20 0
VCDI 0 0 0 0 380 3821 10102 17164

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 380 153 13 23 3 0 0 0
OW 12 17 13 12 15 0 0 0
VODI 0 2 5 25 64 5 0 0
ODI 0 0 0 1 92 21 0 0
CDI 0 0 0 0 31 206 28 0
VCDI 0 0 0 0 5 406 1451 136
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 309 142 13 27 5 0 0 0
OW 78 27 10 9 57 2 0 0
VODI 5 3 8 25 84 39 0 0
ODI 0 0 0 0 44 124 12 0
CDI 0 0 0 0 12 156 40 0
VCDI 0 0 0 0 8 317 1427 136

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 55 952 63 50 0 0 0 0
OW 0 112 127 316 18 0 0 0
VODI 0 3 5 408 102 0 0 0
ODI 0 0 0 30 355 34 0 0
CDI 0 0 0 0 136 522 4 0
VCDI 0 0 0 0 0 745 2409 3532
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 55 985 127 286 25 0 0 0
OW 0 79 66 346 105 0 0 0
VODI 0 3 2 163 221 50 0 0
ODI 0 0 0 9 206 121 0 0
CDI 0 0 0 0 54 305 18 0
VCDI 0 0 0 0 0 825 2395 3532

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 231 2032 127 102 1 0 0 0
OW 2 31 57 226 30 0 0 0
VODI 0 0 7 201 183 2 0 0
ODI 0 0 0 20 302 69 0 0
CDI 0 0 0 8 145 371 4 0
VCDI 0 0 0 2 37 610 787 66
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 231 2024 149 210 3 0 0 0
OW 2 25 22 174 108 6 0 0
VODI 0 11 5 120 234 82 0 0
ODI 0 3 8 15 169 129 0 0
CDI 0 0 7 15 103 108 0 0
VCDI 0 0 0 25 81 727 791 66

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 77 122 0
VCDI 0 0 0 0 0 850 3695 2480
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 0 927 3817 2480

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 7 0 0 0
ODI 0 0 0 0 43 24 0 0
CDI 0 0 0 0 135 356 9 0
VCDI 0 0 0 0 4 1718 3003 0
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 21 1 0 0
ODI 0 0 0 0 43 29 1 0
CDI 0 0 0 0 111 141 18 0
VCDI 0 0 0 0 14 1927 2993 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 2511 1403 41 36 0 0 0 0
OW 0 64 54 69 2 0 0 0
VODI 0 2 27 166 44 0 0 0
ODI 0 0 0 59 246 3 0 0
CDI 0 0 0 0 196 351 1 0
VCDI 0 0 0 0 17 528 497 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2511 1405 60 61 0 0 0 0
OW 0 55 31 92 9 0 0 0
VODI 0 9 26 104 77 0 0 0
ODI 0 0 5 43 151 12 0 0
CDI 0 0 0 20 172 216 12 0
VCDI 0 0 0 10 96 654 486 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 11322 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 11322 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

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6473 2087 3 0 0 0 0 0
OW 0 283 126 74 0 0 0 0
VODI 0 0 11 210 117 0 0 0
ODI 0 0 0 77 212 121 0 0
CDI 0 0 0 5 148 510 18 0
VCDI 0 0 0 0 0 170 1051 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6473 1943 2 0 0 0 0 0
OW 0 340 44 38 5 0 0 0
VODI 0 83 75 114 78 6 0 0
ODI 0 4 19 142 94 84 0 0
CDI 0 0 0 72 292 396 3 0
VCDI 0 0 0 0 8 315 1066 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 11597 1167 22 42 9 0 0 0
OW 0 2 13 36 8 0 0 0
VODI 0 0 0 25 52 0 0 0
ODI 0 0 0 0 14 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 11597 1167 27 37 11 0 0 0
OW 0 2 8 66 55 0 0 0
VODI 0 0 0 0 17 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 3310 1200 111 148 0 0 0 0
OW 0 84 41 168 0 0 0 0
VODI 0 8 11 299 55 0 0 0
ODI 0 0 0 48 92 3 0 0
CDI 0 0 0 9 107 8 7 0
VCDI 0 0 0 0 11 0 82 1
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3310 1132 107 147 0 0 0 0
OW 0 123 34 203 6 0 0 0
VODI 0 33 18 228 85 0 0 0
ODI 0 4 4 64 60 1 0 0
CDI 0 0 0 30 97 9 11 0
VCDI 0 0 0 0 17 1 78 1

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 15742 0 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 15742 0 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


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