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: 2024-09-26

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: 2024-09-30

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 500 2944 69 21 0 0 0 0
OW 0 221 203 193 0 0 0 0
VODI 0 4 9 604 103 0 0 0
ODI 0 0 0 89 719 39 3 0
CDI 0 0 0 16 385 1563 24 0
VCDI 0 0 0 0 45 4109 19566 5473
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 500 2841 78 32 0 0 0 0
OW 0 255 107 256 11 0 0 0
VODI 0 70 53 365 279 17 0 0
ODI 0 3 41 151 509 242 0 0
CDI 0 0 2 100 313 1471 1213 0
VCDI 0 0 0 19 140 3981 18380 5473

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 1608 345 0 0 0 0 0 0
OW 8 39 2 5 0 0 0 0
VODI 0 6 5 33 0 0 0 0
ODI 0 2 0 15 25 7 0 0
CDI 0 7 0 2 37 98 3 0
VCDI 0 4 0 0 34 181 653 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1595 310 0 0 0 0 0 0
OW 21 53 0 0 0 0 0 0
VODI 0 7 1 2 2 0 0 0
ODI 0 18 3 16 18 11 0 0
CDI 0 9 3 37 16 87 2 0
VCDI 0 6 0 0 60 188 654 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 5285 1751 33 37 0 0 0 0
OW 0 118 81 128 37 0 0 0
VODI 0 2 10 216 143 18 0 0
ODI 0 0 0 14 189 127 1 0
CDI 0 0 0 0 63 387 23 0
VCDI 0 0 0 0 1 429 885 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5285 1415 17 46 35 0 0 0
OW 0 411 69 142 92 45 0 0
VODI 0 43 29 173 88 96 0 0
ODI 0 2 9 33 151 54 19 0
CDI 0 0 0 1 67 405 109 0
VCDI 0 0 0 0 0 361 781 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 2132 2413 14 1 0 0 0 0
OW 0 237 125 63 0 0 0 0
VODI 0 0 7 272 25 0 0 0
ODI 0 0 0 13 241 13 0 0
CDI 0 0 0 0 22 75 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 2132 2315 29 12 0 0 0 0
OW 0 223 48 102 5 0 0 0
VODI 0 111 63 155 107 0 0 0
ODI 0 1 6 80 145 51 0 0
CDI 0 0 0 0 31 37 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 4032 2317 15 3 0 0 0 0
OW 0 45 85 117 0 0 0 0
VODI 0 0 0 244 27 0 0 0
ODI 0 0 0 10 157 0 0 0
CDI 0 0 0 0 24 127 0 0
VCDI 0 0 0 0 0 21 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4032 2268 36 15 0 0 0 0
OW 0 90 59 184 1 0 0 0
VODI 0 4 5 174 89 0 0 0
ODI 0 0 0 1 117 58 0 0
CDI 0 0 0 0 1 90 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 2692 1543 32 15 0 0 0 0
OW 0 21 50 82 1 0 0 0
VODI 0 0 0 104 58 9 0 0
ODI 0 0 0 10 182 15 0 0
CDI 0 0 0 0 43 212 0 0
VCDI 0 0 0 0 0 69 161 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2692 1537 39 50 0 0 0 0
OW 0 24 36 89 37 0 0 0
VODI 0 3 7 62 157 39 0 0
ODI 0 0 0 9 66 83 0 0
CDI 0 0 0 1 24 136 43 0
VCDI 0 0 0 0 0 47 118 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 5887 430 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 5887 430 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

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11101 218 2 1 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 11101 218 2 1 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 8984 1611 47 61 11 0 0 0
OW 11 60 26 64 27 0 0 0
VODI 0 9 4 74 73 6 0 0
ODI 0 0 0 13 73 50 0 0
CDI 0 0 0 2 25 287 0 0
VCDI 0 0 0 0 0 170 8 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8985 1632 63 125 55 1 0 0
OW 10 36 9 40 70 43 0 0
VODI 0 12 4 30 40 77 0 0
ODI 0 0 1 13 17 61 0 0
CDI 0 0 0 6 21 70 0 0
VCDI 0 0 0 0 6 261 8 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 12842 145 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 12842 145 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

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5570 139 0 0 0 0 0 0
OW 0 1 1 0 0 0 0 0
VODI 0 0 0 1 4 1 0 0
ODI 0 0 0 5 32 5 0 0
CDI 0 0 0 5 21 12 0 0
VCDI 0 0 0 0 4 2 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5570 131 0 0 0 0 0 0
OW 0 9 1 0 0 0 0 0
VODI 0 0 0 1 0 1 0 0
ODI 0 0 0 0 11 6 0 0
CDI 0 0 0 5 35 11 0 0
VCDI 0 0 0 5 15 2 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 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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