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: 2024-08-22

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: 2024-08-26

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 698 2528 8 23 0 0 0 0
OW 0 726 315 298 0 0 0 0
VODI 0 11 4 2658 252 0 0 0
ODI 0 0 0 221 12707 330 0 0
CDI 0 0 0 0 685 11747 142 0
VCDI 0 0 0 0 0 848 2701 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 698 2292 23 51 0 0 0 0
OW 0 797 108 286 0 0 0 0
VODI 0 176 196 2132 474 0 0 0
ODI 0 0 0 731 11903 2640 19 0
CDI 0 0 0 0 1267 9206 732 0
VCDI 0 0 0 0 0 1079 2092 0

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 746 565 8 2 0 0 0 0
OW 83 259 21 29 0 0 0 0
VODI 19 38 7 125 10 0 0 0
ODI 9 3 3 12 33 3 0 0
CDI 0 23 1 2 153 196 9 0
VCDI 0 2 0 0 21 93 644 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 687 530 8 2 0 0 0 0
OW 110 175 7 38 0 0 0 0
VODI 36 123 15 95 4 0 0 0
ODI 20 36 6 27 15 6 0 0
CDI 4 24 4 8 168 190 40 0
VCDI 0 2 0 0 30 96 613 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 5139 1034 0 0 0 0 0 0
OW 107 922 165 67 0 0 0 0
VODI 0 0 15 828 27 0 0 0
ODI 0 0 0 25 803 16 0 0
CDI 0 0 0 0 99 697 0 0
VCDI 0 0 0 0 0 18 16 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4951 592 0 0 0 0 0 0
OW 294 895 29 16 0 0 0 0
VODI 1 469 151 753 81 0 0 0
ODI 0 0 0 151 667 198 0 0
CDI 0 0 0 0 181 503 0 0
VCDI 0 0 0 0 0 30 16 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 1393 1939 0 0 0 0 0 0
OW 0 792 261 88 0 0 0 0
VODI 0 2 12 731 21 0 0 0
ODI 0 0 0 7 134 15 0 0
CDI 0 0 0 0 18 172 3 0
VCDI 0 0 0 0 0 42 23 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1393 1638 0 0 0 0 0 0
OW 0 777 62 39 0 0 0 0
VODI 0 318 211 766 85 16 0 0
ODI 0 0 0 21 88 159 0 0
CDI 0 0 0 0 0 54 26 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 1667 2317 0 0 0 0 0 0
OW 0 1531 498 160 0 0 0 0
VODI 0 0 18 993 23 0 0 0
ODI 0 0 0 0 17 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 1667 1790 0 0 0 0 0 0
OW 0 1706 160 63 0 0 0 0
VODI 0 352 356 1090 40 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

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2279 1362 0 0 0 0 0 0
OW 0 408 116 36 0 0 0 0
VODI 0 0 9 566 33 0 0 0
ODI 0 0 0 38 424 3 0 0
CDI 0 0 0 0 3 22 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 2279 1117 0 0 0 0 0 0
OW 0 584 60 67 0 0 0 0
VODI 0 69 65 461 106 0 0 0
ODI 0 0 0 112 335 22 0 0
CDI 0 0 0 0 19 3 0 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 5847 470 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 5847 470 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 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 10056 1332 10 8 0 0 0 0
OW 24 41 19 38 0 0 0 0
VODI 0 0 0 46 10 0 0 0
ODI 0 0 0 1 43 1 0 0
CDI 0 0 0 0 28 39 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 10047 1306 5 3 0 0 0 0
OW 33 64 18 45 7 0 0 0
VODI 0 3 6 31 12 0 0 0
ODI 0 0 0 14 18 0 0 0
CDI 0 0 0 0 44 40 0 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 12987 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 12987 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

Baffin Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5580 102 0 0 0 0 0 0
OW 8 88 3 15 0 0 0 0
VODI 0 3 0 4 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 5574 98 0 0 0 0 0 0
OW 14 67 2 18 0 0 0 0
VODI 0 28 1 1 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

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8534 4 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 8534 4 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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