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: 2020-04-09

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-04-13

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 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 5 0 2 0
CDI 0 0 0 0 9 29 46 0
VCDI 0 0 0 0 7 44 2387 34373
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 4 0
ODI 0 0 0 0 0 0 12 0
CDI 0 0 0 0 0 0 35 0
VCDI 0 0 0 0 21 73 2384 34373

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 1
CDI 0 0 0 0 2 5 0 7
VCDI 0 0 0 0 32 89 274 2723
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 34 94 274 2731

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 4 0 8
CDI 0 0 0 0 0 19 17 92
VCDI 0 0 0 0 0 58 1205 8579
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 4 9 0
VCDI 0 0 0 0 0 77 1213 8679

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 7 4 0
ODI 0 0 0 0 0 5 14 1
CDI 0 0 0 0 0 9 31 0
VCDI 0 0 0 0 0 50 2559 2974
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 11 19 0
ODI 0 0 0 0 0 4 22 1
CDI 0 0 0 0 0 8 33 0
VCDI 0 0 0 0 0 48 2534 2974

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 1 0
ODI 0 0 0 0 0 63 42 0
CDI 0 0 0 0 0 96 69 9
VCDI 0 0 0 0 0 330 3867 2769
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 5 0
ODI 0 0 0 0 0 35 25 0
CDI 0 0 0 0 0 95 86 11
VCDI 0 0 0 0 0 359 3863 2767

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 3 0 0
CDI 0 0 0 0 0 35 20 0
VCDI 0 0 0 0 0 178 2947 2143
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 12 15 1
VCDI 0 0 0 0 0 204 2952 2142

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 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 14 0 0 0
ODI 0 0 0 0 34 4 0 0
CDI 0 0 0 0 5 84 9 0
VCDI 0 0 0 0 0 154 3673 2354
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 1 0 0 0
VODI 0 0 0 0 21 0 0 0
ODI 0 0 0 0 22 10 0 0
CDI 0 0 0 0 8 78 40 0
VCDI 0 0 0 0 1 154 3642 2354

Barents Sea:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 2421 3667 61 272 243 48 4 0
OW 0 41 10 103 101 43 8 0
VODI 0 6 0 12 124 95 19 0
ODI 0 2 0 0 47 148 30 0
CDI 0 0 0 0 40 309 79 0
VCDI 0 0 0 0 21 584 2793 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 2421 3659 59 280 272 71 12 0
OW 0 52 12 75 88 61 20 0
VODI 0 5 0 28 85 131 51 0
ODI 0 0 0 4 47 129 53 0
CDI 0 0 0 0 35 195 74 0
VCDI 0 0 0 0 49 640 2723 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 4235 3387 34 244 60 17 1 0
OW 0 24 3 127 90 10 6 0
VODI 0 0 1 34 207 26 13 0
ODI 0 0 0 0 152 64 20 0
CDI 0 0 0 0 77 302 30 0
VCDI 0 0 0 0 9 560 1760 203
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 4235 3378 32 263 98 23 2 0
OW 0 29 3 95 86 22 14 0
VODI 0 4 3 44 159 48 20 0
ODI 0 0 0 3 139 74 25 0
CDI 0 0 0 0 97 246 42 0
VCDI 0 0 0 0 16 566 1727 203

Southeast Greenland:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 8487 3337 35 156 29 1 0 0
OW 0 91 15 100 84 9 0 0
VODI 0 6 6 52 151 20 0 0
ODI 0 0 0 4 167 69 1 0
CDI 0 0 0 0 18 107 43 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 8487 3363 45 256 155 10 0 0
OW 0 41 4 20 114 41 0 0
VODI 0 29 7 15 72 96 19 0
ODI 0 1 0 21 76 47 19 0
CDI 0 0 0 0 32 12 6 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 0 175 2 2 0 0 0 0
OW 0 111 16 37 0 0 0 0
VODI 0 10 11 52 13 0 0 0
ODI 0 0 0 46 30 3 0 0
CDI 0 0 0 17 126 61 42 2
VCDI 0 0 0 0 334 1335 2990 388
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 0 109 0 0 0 0 0 0
OW 0 62 4 7 0 0 0 0
VODI 0 81 9 12 11 0 0 0
ODI 0 40 10 19 13 3 0 0
CDI 0 4 6 58 37 8 0 0
VCDI 0 0 0 58 442 1388 3032 390

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 11 31 5 0 0
ODI 0 0 0 13 76 103 0 0
CDI 0 0 0 15 45 540 48 0
VCDI 0 0 0 10 99 1036 4543 2012
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 66 23 0 0
ODI 0 0 0 5 23 156 3 0
CDI 0 0 0 12 19 356 39 0
VCDI 0 0 0 32 143 1149 4549 2012

Labrador Sea:

observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 12119 4592 57 244 145 22 0 0
OW 0 129 25 187 161 3 0 0
VODI 0 0 1 54 235 87 20 0
ODI 0 0 0 0 200 236 26 0
CDI 0 0 0 0 104 433 91 0
VCDI 0 0 0 0 42 389 607 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 12119 4721 82 415 292 32 0 0
OW 0 0 1 70 211 65 6 0
VODI 0 0 0 0 169 198 15 0
ODI 0 0 0 0 66 191 10 0
CDI 0 0 0 0 63 294 91 0
VCDI 0 0 0 0 86 390 622 0


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