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: 2022-11-10

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-11-14

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 0 557 19 98 18 0 0 0
OW 0 11 3 47 30 0 0 0
VODI 0 9 1 31 65 4 0 0
ODI 0 0 0 12 59 18 0 0
CDI 0 0 0 2 77 39 0 0
VCDI 0 0 0 0 40 523 6933 28306
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 536 15 62 5 0 0 0
OW 0 19 4 52 20 0 0 0
VODI 0 14 3 34 57 2 0 0
ODI 0 8 1 24 43 10 0 0
CDI 0 0 0 13 74 42 0 0
VCDI 0 0 0 5 90 530 6933 28306

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 22 0 0
OW 0 0 0 0 0 3 0 0
VODI 0 0 0 0 0 3 0 0
ODI 0 0 0 0 0 1 0 0
CDI 0 0 0 0 0 4 1 0
VCDI 0 0 0 0 0 294 811 1994
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 24 0 0
OW 0 0 0 0 0 3 0 0
VODI 0 0 0 0 0 4 0 0
ODI 0 0 0 0 0 1 1 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 295 811 1994

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 46 2 45 3 0 0 0
OW 0 4 3 18 14 0 0 0
VODI 0 0 0 21 67 0 0 0
ODI 0 0 0 0 65 23 0 0
CDI 0 0 0 0 25 139 0 0
VCDI 0 0 0 0 0 1073 2949 5485
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 49 4 46 4 0 0 0
OW 0 1 1 29 29 0 0 0
VODI 0 0 0 9 77 5 0 0
ODI 0 0 0 0 48 31 0 0
CDI 0 0 0 0 14 70 0 0
VCDI 0 0 0 0 2 1129 2949 5485

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 258 2797 34 148 45 0 0 0
OW 0 111 31 228 75 6 0 0
VODI 0 18 7 111 203 29 0 0
ODI 0 5 5 28 171 80 0 0
CDI 0 0 2 17 140 166 1 0
VCDI 0 0 0 2 42 360 534 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 258 2690 41 174 95 16 0 0
OW 0 198 21 168 65 20 0 0
VODI 0 30 10 126 163 43 6 0
ODI 0 12 1 34 128 77 18 0
CDI 0 1 6 24 146 124 30 0
VCDI 0 0 0 8 79 361 481 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 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 7 25
VCDI 0 0 0 0 0 155 2854 4196
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 18 5 98
VCDI 0 0 0 0 0 146 2856 4123

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 0 0 0
VCDI 0 0 0 0 0 16 1382 3928
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 1 2
VCDI 0 0 0 0 0 16 1381 3926

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 569 1388 25 83 8 0 0 0
OW 0 36 9 76 23 0 0 0
VODI 0 8 2 100 76 5 0 0
ODI 0 2 2 32 80 8 0 0
CDI 0 0 0 36 62 97 15 0
VCDI 0 0 0 18 82 691 2798 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 569 1256 13 34 3 0 0 0
OW 0 138 14 94 15 0 0 0
VODI 0 38 9 107 96 6 0 0
ODI 0 1 2 31 65 19 0 0
CDI 0 1 0 40 49 93 14 0
VCDI 0 0 0 39 103 683 2799 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 8488 2416 17 53 6 0 0 0
OW 0 11 2 23 20 1 0 0
VODI 0 10 2 13 38 4 0 0
ODI 0 0 0 6 37 18 0 0
CDI 0 0 0 0 6 50 0 0
VCDI 0 0 0 0 0 68 42 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8488 2415 16 62 15 0 0 0
OW 0 14 3 14 35 1 0 0
VODI 0 8 2 17 44 9 0 0
ODI 0 0 0 2 13 30 0 0
CDI 0 0 0 0 0 46 0 0
VCDI 0 0 0 0 0 55 42 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 6491 2498 18 63 10 0 0 0
OW 0 34 7 114 39 0 0 0
VODI 0 2 3 79 93 7 0 0
ODI 0 0 0 11 115 24 0 0
CDI 0 0 0 0 105 183 3 0
VCDI 0 0 0 0 4 439 1163 191
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6491 2467 20 69 7 0 0 0
OW 0 51 6 86 41 0 0 0
VODI 0 16 1 81 82 5 0 0
ODI 0 0 1 24 89 41 5 0
CDI 0 0 0 7 142 173 16 1
VCDI 0 0 0 0 5 434 1145 190

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10726 2010 12 51 117 30 0 0
OW 0 14 2 10 15 0 0 0
VODI 0 0 0 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
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10726 2024 14 59 128 30 0 0
OW 0 0 0 3 4 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 0 1084 24 153 6 0 0 0
OW 0 30 4 109 25 0 0 0
VODI 0 10 3 101 91 0 0 0
ODI 0 0 0 35 239 1 0 0
CDI 0 0 0 0 273 78 0 0
VCDI 0 0 0 0 252 1536 1749 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 987 13 81 5 0 0 0
OW 0 91 8 91 17 0 0 0
VODI 0 43 8 139 60 0 0 0
ODI 0 3 2 76 114 0 0 0
CDI 0 0 0 11 269 6 1 0
VCDI 0 0 0 0 421 1609 1748 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 4502 2539 5 14 2 0 0 0
OW 0 240 2 2 3 0 0 0
VODI 0 191 10 26 0 0 0 0
ODI 0 138 8 122 68 1 0 0
CDI 0 73 6 47 54 62 0 0
VCDI 0 17 6 57 67 325 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4502 2419 5 9 0 0 0 0
OW 0 240 2 7 4 0 0 0
VODI 0 253 9 39 2 0 0 0
ODI 0 140 2 36 1 0 0 0
CDI 0 95 9 85 39 5 0 0
VCDI 0 51 10 92 148 383 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 17309 2350 5 13 0 0 0 0
OW 2 66 12 74 3 0 0 0
VODI 0 16 3 77 19 0 0 0
ODI 0 0 0 17 89 2 0 0
CDI 0 1 4 30 112 0 0 0
VCDI 0 0 0 5 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 17308 2280 14 49 0 0 0 0
OW 2 76 1 69 22 0 0 0
VODI 1 72 3 50 142 2 0 0
ODI 0 4 2 17 54 0 0 0
CDI 0 1 2 17 5 0 0 0
VCDI 0 0 2 14 0 0 0 0


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