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: 2022-03-03

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-03-07

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 14 121 69 30 0
OW 0 0 0 0 26 13 15 0
VODI 0 0 0 0 18 21 16 0
ODI 0 0 0 7 8 16 22 0
CDI 0 0 0 22 16 13 70 0
VCDI 0 0 0 6 341 482 3023 32533
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 14 137 83 45 0
OW 0 0 0 0 13 23 23 0
VODI 0 0 0 0 10 18 32 0
ODI 0 0 0 1 8 7 50 0
CDI 0 0 0 16 10 3 63 0
VCDI 0 0 0 18 352 480 2963 32533

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 44 304 2785
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 44 304 2785

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 96 998 8888
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 96 998 8888

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 1
ODI 0 0 0 0 0 0 0 5
CDI 0 0 0 0 0 26 7 10
VCDI 0 0 0 0 0 40 554 5011
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 2 0 0
CDI 0 0 0 0 0 27 13 0
VCDI 0 0 0 0 0 37 548 5027

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 0
VCDI 0 0 0 0 0 0 0 7246
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 7246

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 8
VCDI 0 0 0 0 0 0 0 5318
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 4
VCDI 0 0 0 0 0 0 0 5322

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 1 1 36 25 0 0 0
OW 0 5 1 8 10 0 0 0
VODI 0 4 1 11 16 0 0 0
ODI 0 7 0 9 8 0 0 0
CDI 0 8 1 14 7 2 0 0
VCDI 0 57 11 48 94 162 2038 3746
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1 1 34 31 0 0 0
OW 0 2 1 9 4 0 0 0
VODI 0 7 1 10 15 0 0 0
ODI 0 6 0 10 8 0 0 0
CDI 0 7 1 7 5 0 0 0
VCDI 0 59 11 56 97 164 2038 3746

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2964 3370 38 201 17 0 0 0
OW 0 224 21 144 66 0 0 0
VODI 0 71 23 191 189 2 0 0
ODI 0 19 9 83 349 35 0 0
CDI 0 1 1 60 201 306 7 0
VCDI 0 0 0 14 157 672 1896 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2964 3352 41 226 30 0 0 0
OW 0 179 9 121 81 0 0 0
VODI 0 107 23 147 193 7 0 0
ODI 0 34 10 80 262 39 0 0
CDI 0 13 7 61 201 247 34 0
VCDI 0 0 2 58 212 722 1869 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 5088 3409 23 51 2 0 0 0
OW 0 84 11 92 16 0 0 0
VODI 0 26 7 112 55 0 0 0
ODI 0 2 2 48 98 16 0 0
CDI 0 0 0 17 163 151 1 0
VCDI 0 0 0 2 58 567 1447 148
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5088 3256 15 41 6 0 0 0
OW 0 162 9 47 14 0 0 0
VODI 0 88 12 75 34 5 0 0
ODI 0 15 7 94 48 14 0 0
CDI 0 0 0 58 155 133 3 0
VCDI 0 0 0 7 135 582 1445 148

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8024 3338 40 229 155 36 0 0
OW 0 164 18 63 27 10 0 0
VODI 0 47 11 105 58 12 0 0
ODI 0 2 4 45 118 26 4 0
CDI 0 0 0 4 158 146 25 0
VCDI 0 0 0 0 4 27 88 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8024 3303 46 256 171 41 0 0
OW 0 151 9 39 29 14 0 0
VODI 0 73 10 44 42 13 4 0
ODI 0 23 6 59 50 19 12 0
CDI 0 1 2 48 183 101 63 0
VCDI 0 0 0 0 45 69 38 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 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 4 21 0 0 0
CDI 0 0 0 8 43 8 5 0
VCDI 0 0 0 3 344 806 2822 1739
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 6 31 7 1 0
VCDI 0 0 0 9 377 807 2826 1739

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 51 1 0
VCDI 0 0 0 0 8 384 2906 5237
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 49 2 0
VCDI 0 0 0 0 8 386 2905 5237

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8389 4329 69 436 293 3 0 0
OW 0 29 11 219 200 16 0 0
VODI 0 1 4 138 310 42 0 0
ODI 0 0 0 74 332 87 0 0
CDI 0 0 0 30 465 444 1 0
VCDI 0 0 0 36 335 2920 996 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8389 4294 61 489 369 12 0 0
OW 0 65 19 163 182 26 0 0
VODI 0 0 4 106 224 62 0 0
ODI 0 0 0 41 267 82 0 0
CDI 0 0 0 76 429 333 4 0
VCDI 0 0 0 58 464 2997 993 0


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