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: 2022-03-10

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-03-14

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 31 7 97 74 35 0 0
OW 0 0 0 26 17 25 0 0
VODI 0 0 0 18 21 26 4 0
ODI 0 0 0 16 11 36 5 0
CDI 0 15 3 35 17 61 25 0
VCDI 0 278 37 287 344 663 4598 30090
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 31 7 100 85 82 0 0
OW 0 0 0 12 12 23 7 0
VODI 0 0 0 12 11 36 13 0
ODI 0 0 0 10 8 33 17 0
CDI 0 0 1 34 15 40 26 0
VCDI 0 293 39 311 353 632 4569 30090

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 12 73 612 2436
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 12 73 612 2436

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 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 0 103 1219 4332
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 0 103 1219 4332

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 6
VCDI 0 0 0 0 0 0 0 7240
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 7242

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 0
VCDI 0 0 0 0 0 0 0 5326
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 5326

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 98 6 18 2 0 0 0
OW 0 28 1 5 3 0 0 0
VODI 0 27 0 1 0 0 0 0
ODI 0 19 0 1 0 0 0 0
CDI 0 37 1 7 1 3 0 0
VCDI 0 175 19 131 178 340 2681 2549
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 37 4 15 2 0 0 0
OW 0 30 2 5 3 0 0 0
VODI 0 24 1 3 0 0 0 0
ODI 0 24 0 1 0 0 0 0
CDI 0 31 0 0 2 2 0 11
VCDI 0 238 20 139 177 341 2681 2538

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3430 3738 18 21 0 0 0 0
OW 0 296 43 117 2 0 0 0
VODI 0 92 35 254 93 0 0 0
ODI 0 18 9 106 230 5 0 0
CDI 0 2 1 28 303 259 0 0
VCDI 0 3 1 11 211 1688 317 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3430 3453 12 16 0 0 0 0
OW 0 413 24 52 11 0 0 0
VODI 0 210 49 177 52 0 0 0
ODI 0 50 11 158 124 5 0 0
CDI 0 16 9 87 320 169 19 0
VCDI 0 7 2 47 332 1778 298 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 5469 3230 4 23 0 0 0 0
OW 0 137 17 52 4 0 0 0
VODI 0 40 10 93 44 0 0 0
ODI 0 4 1 47 98 0 0 0
CDI 0 0 0 9 186 147 12 0
VCDI 0 0 0 0 25 923 1118 3
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5469 3105 4 34 1 0 0 0
OW 0 155 6 28 4 0 0 0
VODI 0 111 13 44 24 0 0 0
ODI 0 34 8 68 51 0 0 0
CDI 0 6 1 50 199 123 48 0
VCDI 0 0 0 0 78 947 1082 3

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8724 3233 23 93 47 8 0 0
OW 0 129 17 55 14 2 0 0
VODI 0 49 7 54 59 0 0 0
ODI 0 9 5 48 81 14 4 0
CDI 0 0 1 4 86 69 4 0
VCDI 0 0 0 0 14 78 57 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8724 3175 31 117 54 10 0 0
OW 0 90 7 41 26 0 0 0
VODI 0 71 2 25 54 0 0 0
ODI 0 47 6 18 43 26 5 0
CDI 0 37 7 51 85 78 22 0
VCDI 0 0 0 2 39 57 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 0 0 0 0 0
CDI 0 0 0 0 9 3 1 0
VCDI 0 0 0 0 123 960 3835 872
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 5 6 2 0
VCDI 0 0 0 0 127 957 3834 872

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 68 1 0
VCDI 0 0 0 0 0 430 2642 5446
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 52 2 0
VCDI 0 0 0 0 0 446 2641 5446

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9488 3607 61 489 148 3 0 0
OW 22 42 15 173 148 18 0 0
VODI 6 35 13 173 368 56 0 0
ODI 0 0 0 72 292 135 0 0
CDI 0 0 0 21 421 259 1 0
VCDI 0 0 0 2 439 2834 868 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 9509 3578 61 485 276 10 0 0
OW 7 62 9 140 181 28 0 0
VODI 0 42 15 136 221 79 0 0
ODI 0 2 4 106 186 106 0 0
CDI 0 0 0 60 266 238 5 0
VCDI 0 0 0 3 686 2844 864 0


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