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: 2024-09-19

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: 2024-09-23

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 352 2979 72 39 2 0 0 0
OW 0 225 230 303 19 0 0 0
VODI 0 1 14 967 162 0 0 0
ODI 0 0 0 103 1421 49 0 0
CDI 0 0 0 2 470 5422 84 0
VCDI 0 0 0 0 5 4696 16876 2409
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 352 2986 98 123 12 0 0 0
OW 0 191 158 505 124 0 0 0
VODI 0 28 60 757 735 87 0 0
ODI 0 0 0 29 1106 1015 0 0
CDI 0 0 0 0 101 4268 787 0
VCDI 0 0 0 0 1 4797 16173 2409

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 1586 340 0 0 0 0 0 0
OW 19 30 0 0 0 0 0 0
VODI 1 16 1 13 15 4 0 0
ODI 0 11 0 22 32 26 0 0
CDI 0 7 0 9 45 192 10 0
VCDI 0 5 0 0 11 140 584 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1528 305 0 0 0 0 0 0
OW 77 57 0 0 2 2 0 0
VODI 1 9 0 0 22 20 0 0
ODI 0 9 1 7 19 47 0 0
CDI 0 23 0 33 17 173 32 0
VCDI 0 6 0 4 43 120 562 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 5520 1777 59 59 0 0 0 0
OW 0 167 76 162 16 0 0 0
VODI 0 2 4 223 144 0 0 0
ODI 0 0 0 20 397 66 0 0
CDI 0 0 0 0 163 784 8 0
VCDI 0 0 0 0 0 94 237 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5520 1651 63 83 0 0 0 0
OW 0 245 64 245 68 0 0 0
VODI 0 47 9 119 279 33 0 0
ODI 0 3 3 17 290 274 0 0
CDI 0 0 0 0 83 568 91 0
VCDI 0 0 0 0 0 69 154 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 2017 2579 56 4 0 0 0 0
OW 0 95 92 176 0 0 0 0
VODI 0 0 0 218 71 0 0 0
ODI 0 0 0 6 162 8 0 0
CDI 0 0 0 0 37 115 0 0
VCDI 0 0 0 0 0 17 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2017 2453 73 52 0 0 0 0
OW 0 220 73 268 35 0 0 0
VODI 0 1 2 84 235 102 0 0
ODI 0 0 0 0 0 38 0 0
CDI 0 0 0 0 0 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 4390 2259 17 0 0 0 0 0
OW 0 146 123 50 0 0 0 0
VODI 0 0 3 173 0 0 0 0
ODI 0 0 0 23 40 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 4390 2157 46 9 0 0 0 0
OW 0 231 72 131 1 0 0 0
VODI 0 17 24 74 12 0 0 0
ODI 0 0 1 29 21 0 0 0
CDI 0 0 0 3 6 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 3039 1330 10 0 0 0 0 0
OW 0 125 66 37 0 0 0 0
VODI 0 0 8 200 77 0 0 0
ODI 0 0 0 23 161 4 0 0
CDI 0 0 0 1 56 145 0 0
VCDI 0 0 0 0 0 17 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3039 1318 8 0 0 0 0 0
OW 0 113 54 86 9 0 0 0
VODI 0 23 18 127 92 3 0 0
ODI 0 1 4 48 112 38 0 0
CDI 0 0 0 0 81 118 0 0
VCDI 0 0 0 0 0 7 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 5623 694 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 5623 694 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 11128 193 0 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 11128 193 0 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 9498 1481 37 50 0 0 0 0
OW 0 119 33 99 0 0 0 0
VODI 0 4 2 105 83 0 0 0
ODI 0 0 0 4 71 4 0 0
CDI 0 0 0 0 21 74 0 0
VCDI 0 0 0 0 0 8 3 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9498 1499 58 82 0 0 0 0
OW 0 75 12 144 35 0 0 0
VODI 0 30 2 29 102 7 0 0
ODI 0 0 0 3 27 11 0 0
CDI 0 0 0 0 11 62 0 0
VCDI 0 0 0 0 0 6 3 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 12864 123 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 12864 123 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 5581 128 3 0 0 0 0 0
OW 0 0 0 8 0 0 0 0
VODI 0 0 0 28 24 0 0 0
ODI 0 0 0 1 30 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 5581 128 2 0 0 0 0 0
OW 0 0 1 37 32 0 0 0
VODI 0 0 0 0 22 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

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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