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: 2022-05-05

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-05-09

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 16 0 0
OW 0 0 0 0 1 12 3 0
VODI 0 0 0 0 0 15 19 0
ODI 0 0 0 0 0 11 39 0
CDI 0 0 0 0 1 36 93 0
VCDI 0 0 0 0 66 661 4887 31042
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 1 27 3 0
OW 0 0 0 0 0 16 17 0
VODI 0 0 0 0 0 15 50 0
ODI 0 0 0 0 0 12 65 0
CDI 0 0 0 0 0 18 101 0
VCDI 0 0 0 0 67 663 4805 31042

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 1 7 5 13
VCDI 0 0 0 0 12 14 548 2533
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 9 74
VCDI 0 0 0 0 13 21 544 2472

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 7 3 0 0
ODI 0 0 0 0 63 11 0 0
CDI 0 0 0 24 111 76 28 1
VCDI 0 61 12 97 286 709 4462 4031
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 33 12 0 0
CDI 0 0 0 10 101 62 73 16
VCDI 0 61 12 111 333 725 4417 4016

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 4 0 3 0
ODI 0 0 0 2 10 0 4 0
CDI 0 0 0 7 73 4 10 0
VCDI 0 0 0 18 326 1119 2528 1546
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 5 0
VODI 0 0 0 0 0 0 7 0
ODI 0 0 0 0 14 6 22 0
CDI 0 0 0 2 48 16 40 0
VCDI 0 0 0 25 351 1101 2471 1546

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 1 2
VCDI 0 0 0 0 0 48 770 6422
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 2 0 14
VCDI 0 0 0 0 0 49 771 6410

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 8 2 0 0
ODI 0 0 0 0 23 5 0 0
CDI 0 0 0 0 59 89 5 0
VCDI 0 0 0 0 23 833 3037 1242
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 11 4 0 0
ODI 0 0 0 0 26 22 2 0
CDI 0 0 0 0 36 111 18 0
VCDI 0 0 0 0 40 792 3022 1242

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 0 0 0 0 0 0 0
OW 0 0 0 19 0 0 0 0
VODI 0 0 0 29 52 0 0 0
ODI 0 0 0 13 100 13 0 0
CDI 0 0 0 13 180 132 7 0
VCDI 0 0 0 10 228 2407 3087 41
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 24 21 0 0 0
ODI 0 0 0 31 65 14 0 0
CDI 0 0 0 7 194 86 2 0
VCDI 0 0 0 22 280 2452 3092 41

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3651 3203 59 365 194 8 0 0
OW 0 62 14 103 114 7 0 0
VODI 0 1 1 78 190 17 0 0
ODI 0 1 0 26 246 41 0 0
CDI 0 8 2 35 482 216 8 0
VCDI 0 2 1 84 755 1323 34 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3651 3149 61 373 234 15 0 0
OW 0 78 3 77 114 12 0 0
VODI 0 33 8 49 171 26 0 0
ODI 0 6 2 41 167 46 0 0
CDI 0 0 0 26 398 170 4 0
VCDI 0 11 3 125 897 1343 38 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 4422 3305 29 182 37 0 0 0
OW 0 46 12 84 66 0 0 0
VODI 0 2 3 112 109 5 0 0
ODI 0 0 0 53 141 22 0 0
CDI 0 0 0 3 238 819 58 0
VCDI 0 0 0 0 28 871 1041 8
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4422 3292 29 192 72 0 0 0
OW 0 54 9 69 79 4 0 0
VODI 0 7 6 95 95 27 0 0
ODI 0 0 0 63 87 52 0 0
CDI 0 0 0 15 259 687 59 0
VCDI 0 0 0 0 27 947 1040 8

Southeast Greenland:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 8224 3358 39 103 50 1 0 0
OW 0 36 17 141 10 0 0 0
VODI 0 0 5 119 96 3 0 0
ODI 0 0 0 9 302 52 2 0
CDI 0 0 0 0 73 327 21 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 8224 3333 45 178 54 1 0 0
OW 0 43 9 109 49 0 0 0
VODI 0 18 7 50 144 18 3 0
ODI 0 0 0 35 200 124 6 0
CDI 0 0 0 0 84 240 12 0
VCDI 0 0 0 0 0 0 2 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 33 0 4 0 0 0 0
OW 0 6 4 26 2 0 0 0
VODI 0 0 0 43 21 0 0 0
ODI 0 0 0 17 50 4 0 0
CDI 0 0 0 3 83 189 40 0
VCDI 0 0 0 0 105 695 3854 624
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 14 0 9 0 0 0 0
OW 0 17 0 11 3 0 0 0
VODI 0 8 4 31 23 0 0 0
ODI 0 0 0 30 26 4 0 0
CDI 0 0 0 12 103 179 100 0
VCDI 0 0 0 0 106 705 3794 624

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 2 46 77 0 0
ODI 0 0 0 11 98 101 2 0
CDI 0 0 0 10 457 447 25 0
VCDI 0 0 0 19 856 3872 2445 119
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 2 0 0
VODI 0 0 0 0 40 96 0 0
ODI 0 0 0 0 58 90 5 0
CDI 0 0 0 4 222 305 40 0
VCDI 0 0 0 38 1137 4004 2427 119

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11122 4958 59 194 19 0 0 0
OW 0 45 24 245 125 0 0 0
VODI 0 1 1 82 398 30 0 0
ODI 0 0 0 1 574 308 19 0
CDI 0 0 0 0 313 1199 250 0
VCDI 0 0 0 0 0 97 145 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11122 4889 55 306 105 0 0 0
OW 0 111 25 104 163 30 0 0
VODI 0 4 4 96 312 160 12 0
ODI 0 0 0 16 379 165 53 0
CDI 0 0 0 0 468 936 296 0
VCDI 0 0 0 0 2 343 53 0


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