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: 2023-09-21

Model: ARC-MFC PHYS (TOPAZ)

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2023-09-25

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 739 3775 112 66 1 0 0 0
OW 0 311 336 371 6 0 0 0
VODI 0 2 32 1157 242 0 0 0
ODI 0 0 0 96 2013 22 0 0
CDI 0 0 0 0 423 3270 376 0
VCDI 0 0 0 0 0 3496 18277 1779
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 739 3556 141 131 13 0 0 0
OW 0 489 276 681 152 6 0 0
VODI 0 43 62 727 906 337 2 0
ODI 0 0 1 149 1361 1069 101 0
CDI 0 0 0 2 252 2783 4324 0
VCDI 0 0 0 0 1 2593 14226 1779

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 1296 589 8 0 0 0 0 0
OW 1 71 31 22 0 0 0 0
VODI 0 9 4 47 5 1 0 0
ODI 0 0 0 7 16 23 0 0
CDI 0 0 0 18 9 367 105 0
VCDI 0 0 0 0 0 30 460 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1292 561 8 0 0 0 0 0
OW 5 77 24 22 1 0 0 0
VODI 0 27 9 43 5 3 0 0
ODI 0 4 2 7 12 50 1 0
CDI 0 0 0 22 12 368 510 0
VCDI 0 0 0 0 0 0 54 0

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4170 2190 48 71 0 0 0 0
OW 0 223 168 239 12 0 0 0
VODI 0 0 8 623 205 0 0 0
ODI 0 0 0 49 798 22 0 0
CDI 0 0 0 0 244 687 84 0
VCDI 0 0 0 0 0 84 53 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4170 2106 61 143 23 0 0 0
OW 0 268 80 291 237 0 0 0
VODI 0 39 83 395 359 42 0 0
ODI 0 0 0 153 554 228 0 0
CDI 0 0 0 0 86 514 111 0
VCDI 0 0 0 0 0 9 26 0

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4480 1114 42 17 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4480 1114 42 17 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 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 6093 855 2 0 0 0 0 0
OW 0 72 32 17 0 0 0 0
VODI 0 0 0 47 16 0 0 0
ODI 0 0 0 0 86 0 0 0
CDI 0 0 0 0 2 2 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 6093 812 0 0 0 0 0 0
OW 0 90 11 1 0 0 0 0
VODI 0 25 23 43 10 0 0 0
ODI 0 0 0 20 73 0 0 0
CDI 0 0 0 0 21 2 0 0
VCDI 0 0 0 0 0 0 0 0

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2080 1178 0 0 0 0 0 0
OW 0 328 88 38 0 0 0 0
VODI 0 0 4 196 51 0 0 0
ODI 0 0 0 11 502 63 0 0
CDI 0 0 0 0 29 722 5 0
VCDI 0 0 0 0 0 0 4 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2080 1040 1 0 0 0 0 0
OW 0 345 16 25 1 0 0 0
VODI 0 121 72 128 55 0 0 0
ODI 0 0 3 88 417 167 0 0
CDI 0 0 0 4 109 618 9 0
VCDI 0 0 0 0 0 0 0 0

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4778 1340 0 0 0 0 0 0
OW 0 87 37 11 0 0 0 0
VODI 0 1 2 61 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 4778 1267 0 0 0 0 0 0
OW 0 138 16 4 0 0 0 0
VODI 0 21 21 33 0 0 0 0
ODI 0 2 2 35 0 0 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 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 10992 330 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 10992 330 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 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 6519 2760 128 107 1 0 0 0
OW 0 160 96 172 4 0 0 0
VODI 0 0 6 347 122 0 0 0
ODI 0 0 0 31 560 14 0 0
CDI 0 0 0 0 70 408 11 0
VCDI 0 0 0 0 0 66 114 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6519 2743 128 138 7 0 0 0
OW 0 161 79 284 42 0 0 0
VODI 0 16 23 161 232 3 0 0
ODI 0 0 0 70 259 38 2 0
CDI 0 0 0 4 214 362 61 0
VCDI 0 0 0 0 3 85 62 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 12833 154 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12833 154 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 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 5296 374 0 15 0 0 0 0
OW 0 22 1 6 2 0 0 0
VODI 0 0 0 2 9 0 0 0
ODI 0 0 0 0 36 0 0 0
CDI 0 0 0 0 10 30 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 5296 361 0 10 0 0 0 0
OW 0 35 1 11 2 0 0 0
VODI 0 0 0 2 8 0 0 0
ODI 0 0 0 0 27 5 0 0
CDI 0 0 0 0 20 25 0 0
VCDI 0 0 0 0 0 0 0 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 8538 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8538 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 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 15746 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15746 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 0


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