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: 2020-04-30

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-05-04

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 1 1 8 0 0
ODI 0 0 0 0 2 16 24 0
CDI 0 0 0 0 7 13 59 0
VCDI 0 0 0 0 12 339 5212 31208
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 1 0 0
OW 0 0 0 0 0 18 1 0
VODI 0 0 0 0 0 5 20 0
ODI 0 0 0 1 1 6 36 0
CDI 0 0 0 0 8 17 110 0
VCDI 0 0 0 0 13 329 5128 31208

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 9 1 6 0
VCDI 0 0 0 0 54 26 218 2819
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 13 1 19 0
VCDI 0 0 0 0 50 26 205 2819

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 6 0
ODI 0 0 0 0 10 6 6 0
CDI 0 0 0 0 12 26 42 0
VCDI 0 0 0 0 7 221 2533 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 2 0
OW 0 0 0 0 0 0 8 0
VODI 0 0 0 0 3 1 18 0
ODI 0 0 0 0 10 12 39 0
CDI 0 0 0 0 16 42 83 0
VCDI 0 0 0 0 0 198 2437 2785

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 1 0 0
ODI 0 0 0 0 5 49 11 0
CDI 0 0 0 0 6 102 46 2
VCDI 0 0 0 0 5 492 5103 1424
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 1 14 12 0
CDI 0 0 0 0 10 84 69 6
VCDI 0 0 0 0 5 546 5079 1420

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 2 19 0 0
CDI 0 0 0 0 8 207 13 0
VCDI 0 0 0 0 1 338 3099 1639
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 16 0 0
ODI 0 0 0 0 2 81 0 0
CDI 0 0 0 0 9 155 27 0
VCDI 0 0 0 0 0 312 3085 1639

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 42 0 0 0 0 0 0
OW 0 51 8 31 4 0 0 0
VODI 0 0 0 51 136 9 0 0
ODI 0 0 0 0 309 124 0 1
CDI 0 0 0 0 91 674 82 10
VCDI 0 0 0 0 15 518 3350 825
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 70 2 3 20 0 0 0
OW 0 23 6 25 39 0 0 0
VODI 0 0 0 52 189 33 0 0
ODI 0 0 0 2 178 190 11 0
CDI 0 0 0 0 108 689 453 8
VCDI 0 0 0 0 21 413 2968 828

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3567 3257 68 291 105 0 0 0
OW 0 13 10 203 110 0 0 0
VODI 0 0 0 129 242 13 0 0
ODI 0 0 0 35 433 100 0 0
CDI 0 0 0 5 277 896 35 0
VCDI 0 0 0 0 24 892 626 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3567 3231 70 418 229 0 0 0
OW 0 35 4 96 157 10 0 0
VODI 0 4 4 42 149 60 0 0
ODI 0 0 0 49 162 121 4 0
CDI 0 0 0 36 373 495 71 0
VCDI 0 0 0 22 121 1215 586 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 3936 3502 47 482 61 0 0 0
OW 0 8 11 145 143 1 0 0
VODI 0 0 0 50 330 6 1 0
ODI 0 0 0 0 654 148 9 0
CDI 0 0 0 0 144 791 91 0
VCDI 0 0 0 0 0 544 592 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3936 3476 48 600 252 1 0 0
OW 0 33 5 49 230 10 0 0
VODI 0 1 5 23 364 106 2 0
ODI 0 0 0 5 339 165 11 0
CDI 0 0 0 0 147 678 134 0
VCDI 0 0 0 0 0 530 546 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 8486 3804 53 433 64 0 0 0
OW 0 11 2 70 33 1 0 0
VODI 0 0 0 10 21 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 8486 3806 54 488 77 0 0 0
OW 0 9 1 25 39 1 0 0
VODI 0 0 0 0 2 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 0 424 15 67 7 0 0 0
OW 0 13 7 48 20 0 0 0
VODI 0 0 1 34 80 6 0 0
ODI 0 0 0 4 137 25 0 0
CDI 0 0 0 0 108 326 3 0
VCDI 0 0 0 0 121 944 3179 234
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 429 16 83 20 0 0 0
OW 0 8 7 39 32 1 0 0
VODI 0 0 0 31 73 23 0 0
ODI 0 0 0 0 118 40 0 0
CDI 0 0 0 0 93 267 1 0
VCDI 0 0 0 0 137 970 3181 234

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 1 0 0 0 0 0 0
OW 0 82 19 64 7 0 0 0
VODI 0 20 9 68 4 0 0 0
ODI 0 1 1 24 83 18 2 0
CDI 0 0 0 3 85 313 139 0
VCDI 0 0 0 0 57 676 5203 1708
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 2 3 36 7 0 0 0
VODI 0 98 21 35 2 0 0 0
ODI 0 4 5 70 34 57 16 0
CDI 0 0 0 17 105 261 141 7
VCDI 0 0 0 1 88 689 5187 1701

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13286 4138 64 471 140 0 0 0
OW 0 35 21 129 114 0 0 0
VODI 0 0 1 60 226 33 4 0
ODI 0 0 0 3 246 130 16 0
CDI 0 0 0 0 66 369 136 0
VCDI 0 0 0 0 2 35 484 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13286 4153 81 557 260 7 2 0
OW 0 18 1 73 201 70 2 0
VODI 0 2 4 26 220 142 26 0
ODI 0 0 0 7 69 130 101 0
CDI 0 0 0 0 40 179 171 0
VCDI 0 0 0 0 4 39 338 0


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