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: 2022-01-06

Model: ARC MFC - TOPAZ

Data source: OSI SAF N.H. sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2022-01-10

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 0 258 2 10 1 0 0 0
OW 0 36 8 18 10 0 0 0
VODI 0 18 6 42 19 3 0 0
ODI 0 0 1 23 37 12 0 0
CDI 0 0 0 16 45 30 2 0
VCDI 0 0 0 0 111 370 4737 31087
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 235 3 11 1 0 0 0
OW 0 43 4 11 11 0 0 0
VODI 0 27 5 28 25 4 0 0
ODI 0 7 4 16 29 14 0 0
CDI 0 0 1 28 33 37 8 0
VCDI 0 0 0 15 124 360 4731 31087

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 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 84 295 2754
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 84 295 2754

Beaufort 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 0 0 0
VCDI 0 0 0 0 0 0 0 9982
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 0 0 9982

Chuckchi 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 9 3 0
VCDI 0 0 0 0 0 248 1885 3509
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 13 3 0
VCDI 0 0 0 0 0 244 1885 3509

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 0 0 62
VCDI 0 0 0 0 0 7 772 6405
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 47
VCDI 0 0 0 0 0 7 772 6420

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 0 0 0 0
ODI 0 0 0 0 0 0 0 0
CDI 0 0 0 0 0 32 15 3
VCDI 0 0 0 0 0 163 2517 2596
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 42 19 0
VCDI 0 0 0 0 0 153 2513 2599

Kara 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 5 0 0 0 0
OW 0 0 0 12 4 0 0 0
VODI 0 0 0 7 5 0 0 0
ODI 0 0 0 5 6 0 0 0
CDI 0 0 0 4 8 0 0 0
VCDI 0 0 0 3 93 151 2232 3796
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 1 0 0 0 0
VODI 0 0 0 9 0 0 0 0
ODI 0 0 0 8 5 0 0 0
CDI 0 0 0 7 4 0 0 1
VCDI 0 0 0 11 107 151 2232 3795

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2884 3613 58 267 71 8 0 0
OW 0 42 10 168 95 11 0 0
VODI 0 19 7 71 188 36 0 0
ODI 0 11 1 11 180 55 5 0
CDI 0 10 2 3 101 181 21 0
VCDI 0 2 0 19 49 604 2503 25
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2884 3496 54 273 98 12 0 0
OW 0 129 10 116 94 24 0 0
VODI 0 39 10 91 149 46 3 0
ODI 0 13 2 31 139 72 11 0
CDI 0 12 0 6 123 164 34 0
VCDI 0 8 2 22 81 577 2481 25

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5169 3489 15 39 3 0 0 0
OW 0 98 13 49 14 0 0 0
VODI 0 43 18 91 37 1 0 0
ODI 0 5 4 61 74 6 0 0
CDI 0 0 0 25 183 104 15 0
VCDI 0 0 0 0 53 307 1512 268
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5169 3292 14 46 4 0 0 0
OW 0 155 6 20 19 0 0 0
VODI 0 128 9 33 30 0 0 0
ODI 0 43 14 65 27 6 0 0
CDI 0 17 7 69 114 48 11 0
VCDI 0 0 0 32 170 364 1516 268

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8904 3068 35 156 135 62 54 0
OW 0 95 3 10 6 5 15 0
VODI 0 67 5 14 6 4 6 0
ODI 0 32 8 42 39 19 4 0
CDI 0 2 4 25 62 55 15 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 8904 3013 35 164 143 69 73 0
OW 0 83 1 5 7 7 9 0
VODI 0 76 2 7 6 7 5 0
ODI 0 52 5 15 23 42 6 0
CDI 0 40 11 47 71 29 1 0
VCDI 0 0 1 9 18 2 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 0 573 14 31 0 0 0 0
OW 0 12 9 60 2 0 0 0
VODI 0 0 0 66 18 0 0 0
ODI 0 0 0 19 50 0 0 0
CDI 0 0 0 4 82 3 0 0
VCDI 0 0 0 10 312 825 3016 697
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 534 6 8 0 0 0 0
OW 0 43 9 19 0 0 0 0
VODI 0 8 8 66 0 0 0 0
ODI 0 0 0 51 13 0 0 0
CDI 0 0 0 24 63 4 1 0
VCDI 0 0 0 22 388 824 3015 697

Hudson Bay:

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 57 7 0
VCDI 0 0 0 0 2 1618 4797 2106
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 58 14 0
VCDI 0 0 0 0 2 1617 4790 2106

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13627 3570 42 98 12 0 0 0
OW 0 243 17 120 42 0 0 0
VODI 0 128 8 103 93 5 0 0
ODI 0 87 2 32 109 9 0 0
CDI 0 3 1 52 153 79 7 0
VCDI 0 0 0 4 212 882 469 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13627 3275 41 95 16 0 0 0
OW 0 290 11 103 43 2 0 0
VODI 0 205 8 93 77 8 0 0
ODI 0 132 5 34 103 22 2 0
CDI 0 118 5 39 84 60 12 0
VCDI 0 11 0 45 298 883 462 0


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