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: 2021-12-02

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-12-06

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 0 237 9 22 0 0 0 0
OW 0 27 4 16 4 0 0 0
VODI 0 27 4 29 9 0 0 0
ODI 0 12 5 25 17 0 0 0
CDI 0 5 3 27 46 18 2 0
VCDI 0 0 0 22 163 920 5088 30161
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 199 7 23 0 0 0 0
OW 0 36 3 8 3 0 0 0
VODI 0 31 5 19 8 0 0 0
ODI 0 22 3 22 11 0 0 0
CDI 0 18 4 29 30 15 1 0
VCDI 0 2 3 40 187 923 5089 30161

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 1 244 1255 1633
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 1 244 1255 1633

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 3 28 37 3
VCDI 0 0 0 0 21 110 1937 7843
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 21 31 3
VCDI 0 0 0 0 24 117 1943 7843

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 18 20 0 0
ODI 0 0 0 0 49 53 0 0
CDI 0 0 0 0 139 162 0 0
VCDI 0 0 0 24 362 1338 2620 869
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 16 24 0 0
VODI 0 0 0 0 6 86 0 0
ODI 0 0 0 0 38 105 0 0
CDI 0 0 0 0 73 105 0 0
VCDI 0 0 0 24 435 1253 2620 869

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 3 0 2
VCDI 0 0 0 0 0 159 1245 5837
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 3 0 26
VCDI 0 0 0 0 0 159 1245 5813

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 10
VCDI 0 0 0 0 0 2 462 4852
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 5
VCDI 0 0 0 0 0 2 462 4857

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 324 14 44 20 0 0 0
OW 0 80 7 58 30 0 0 0
VODI 0 45 6 46 58 0 0 0
ODI 0 21 3 35 91 0 0 0
CDI 0 1 3 31 110 39 2 0
VCDI 0 0 0 20 88 650 3270 1235
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 258 13 55 39 0 0 0
OW 0 63 2 28 21 0 0 0
VODI 0 61 6 41 50 0 0 0
ODI 0 42 6 28 77 4 0 0
CDI 0 35 4 33 88 51 26 0
VCDI 0 12 2 49 122 634 3246 1235

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4873 3463 38 125 91 0 0 0
OW 0 53 13 67 71 5 0 0
VODI 0 10 8 59 113 24 0 0
ODI 0 0 0 17 100 70 0 0
CDI 0 0 0 2 54 179 2 0
VCDI 0 0 0 0 26 472 1396 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4873 3435 41 145 121 2 0 0
OW 0 58 9 47 82 12 0 0
VODI 0 25 6 32 90 56 0 0
ODI 0 7 3 33 64 70 5 0
CDI 0 1 0 13 60 152 19 0
VCDI 0 0 0 0 38 458 1374 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 6128 2896 15 41 0 0 0 0
OW 0 55 10 125 3 0 0 0
VODI 0 4 4 97 71 1 0 0
ODI 0 0 0 29 128 1 0 0
CDI 0 0 0 2 265 79 0 0
VCDI 0 0 0 0 152 1177 413 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6128 2775 4 0 0 0 0 0
OW 0 110 11 64 0 0 0 0
VODI 0 61 6 118 23 1 0 0
ODI 0 9 6 58 91 1 0 0
CDI 0 0 2 51 254 70 0 0
VCDI 0 0 0 3 251 1186 413 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 10118 2045 20 151 204 244 0 0
OW 0 66 7 12 2 2 0 0
VODI 0 1 3 29 12 4 0 0
ODI 0 0 0 2 25 6 0 0
CDI 0 0 0 0 23 12 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 10118 2051 21 156 204 244 0 0
OW 0 49 1 7 4 3 0 0
VODI 0 12 8 20 6 4 0 0
ODI 0 0 0 10 28 11 0 0
CDI 0 0 0 1 24 6 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 58 1120 11 38 5 0 0 0
OW 0 87 4 59 27 0 0 0
VODI 0 49 12 43 91 1 0 0
ODI 0 8 6 52 80 13 0 0
CDI 0 1 3 62 91 89 1 0
VCDI 0 0 0 67 477 1353 1788 107
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 58 967 8 20 0 0 0 0
OW 0 129 3 61 22 0 0 0
VODI 0 114 3 27 50 0 0 0
ODI 0 45 12 41 73 5 1 0
CDI 0 10 10 84 92 51 11 0
VCDI 0 0 0 88 534 1400 1777 107

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1567 3661 55 323 68 0 0 0
OW 1 68 11 201 113 0 0 0
VODI 0 14 1 66 362 0 0 0
ODI 0 0 0 6 506 3 0 0
CDI 0 0 0 0 474 84 0 0
VCDI 0 0 0 0 317 656 30 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1567 3516 58 432 134 0 0 0
OW 1 165 8 129 177 0 0 0
VODI 0 44 0 29 316 0 0 0
ODI 0 18 1 2 238 6 0 0
CDI 0 0 0 4 346 49 0 0
VCDI 0 0 0 0 629 688 30 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 17327 2606 13 52 3 0 0 0
OW 2 73 4 16 13 0 0 0
VODI 0 21 2 1 19 0 0 0
ODI 0 8 2 17 5 12 0 0
CDI 0 7 1 5 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 17268 2475 12 39 0 0 0 0
OW 56 81 3 15 2 0 0 0
VODI 5 129 3 15 28 0 0 0
ODI 0 21 3 11 10 12 0 0
CDI 0 9 1 10 0 0 0 0
VCDI 0 0 0 1 0 0 0 0


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