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: 2020-04-16

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-04-20

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 1 0 0 0
OW 0 0 0 0 6 5 0 0
VODI 0 0 0 5 15 17 0 0
ODI 0 0 0 8 25 49 2 0
CDI 0 0 0 10 62 152 50 0
VCDI 0 0 0 2 42 791 5226 30434
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 13 11 0 0
OW 0 0 0 0 3 24 0 0
VODI 0 0 0 0 1 37 10 0
ODI 0 0 0 4 11 21 22 0
CDI 0 0 0 12 47 74 45 0
VCDI 0 0 0 9 76 847 5201 30434

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 5 9 0 0
VCDI 0 0 0 0 34 30 171 2884
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 39 39 171 2884

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 15
VCDI 0 0 0 0 0 2 540 9425
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 2 540 9440

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 1 0
VODI 0 0 0 0 0 0 7 0
ODI 0 0 0 0 0 9 5 0
CDI 0 0 0 0 2 54 19 0
VCDI 0 0 0 0 0 195 1411 3951
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 2 0
VODI 0 0 0 0 0 1 9 0
ODI 0 0 0 0 0 6 10 0
CDI 0 0 0 0 2 42 12 2
VCDI 0 0 0 0 0 209 1410 3949

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 0 21 25 0
CDI 0 0 0 0 0 40 94 15
VCDI 0 0 0 0 0 61 1939 5050
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 14 19 2
CDI 0 0 0 0 0 30 159 25
VCDI 0 0 0 0 0 79 1880 5038

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 5 9 1 0 0
ODI 0 0 0 11 27 3 1 0
CDI 0 0 0 15 66 49 14 0
VCDI 0 0 0 4 35 226 1975 2885
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 1 1 0 0
ODI 0 0 0 7 16 4 5 0
CDI 0 0 0 20 52 37 17 0
VCDI 0 0 0 6 68 237 1968 2885

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 23 3 0 0 0
VODI 0 0 0 66 99 1 0 0
ODI 0 0 0 27 175 73 4 0
CDI 0 0 0 27 209 332 35 0
VCDI 0 0 0 1 59 939 4258 0
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 4 0 0 0 0
OW 0 0 0 15 8 0 0 0
VODI 0 0 0 43 56 8 0 0
ODI 0 0 0 35 157 76 5 0
CDI 0 0 0 28 216 257 50 0
VCDI 0 0 0 19 108 1004 4242 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 3691 3221 37 95 4 0 0 0
OW 0 114 20 182 28 0 0 0
VODI 0 23 14 229 137 4 0 0
ODI 0 0 0 20 365 44 0 0
CDI 0 0 0 0 230 446 6 0
VCDI 0 0 0 0 23 664 1734 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 3691 3259 46 124 19 0 0 0
OW 0 92 16 162 46 2 0 0
VODI 0 7 9 169 158 34 0 0
ODI 0 0 0 67 174 65 0 0
CDI 0 0 0 4 325 291 0 0
VCDI 0 0 0 0 65 766 1740 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 4305 3233 32 441 112 0 0 0
OW 0 27 4 57 141 0 0 0
VODI 0 0 2 44 264 4 0 0
ODI 0 0 0 3 269 85 19 0
CDI 0 0 0 0 304 780 19 0
VCDI 0 0 0 0 29 1181 341 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 4305 3236 33 467 176 0 0 0
OW 0 24 4 38 134 1 0 0
VODI 0 0 1 36 195 4 0 0
ODI 0 0 0 4 224 46 4 0
CDI 0 0 0 0 242 494 34 0
VCDI 0 0 0 0 148 1505 341 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 8354 3461 34 151 257 15 0 0
OW 0 37 12 109 114 16 0 0
VODI 0 0 0 100 146 24 0 0
ODI 0 0 0 10 90 35 0 0
CDI 0 0 0 0 0 23 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 8354 3498 46 285 369 25 0 0
OW 0 0 0 74 107 19 0 0
VODI 0 0 0 11 106 37 0 0
ODI 0 0 0 0 25 30 0 0
CDI 0 0 0 0 0 2 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 0 280 9 6 0 0 0 0
OW 0 98 10 58 14 0 0 0
VODI 0 4 5 74 49 0 0 0
ODI 0 0 0 9 92 36 0 0
CDI 0 0 0 0 95 124 76 2
VCDI 0 0 0 0 43 709 3288 722
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 244 7 5 0 0 0 0
OW 0 86 6 24 5 0 0 0
VODI 0 45 6 52 28 0 0 0
ODI 0 7 5 33 38 11 0 0
CDI 0 0 0 33 55 111 56 16
VCDI 0 0 0 0 167 747 3308 708

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 49 13 0
CDI 0 0 0 0 18 270 216 0
VCDI 0 0 0 0 0 415 4549 3057
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 24 1 0
CDI 0 0 0 0 6 93 112 1
VCDI 0 0 0 0 12 617 4665 3056

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11856 4333 78 536 113 0 0 0
OW 0 81 33 466 149 0 0 0
VODI 0 8 3 235 304 5 0 0
ODI 0 0 0 0 243 124 14 0
CDI 0 0 0 0 91 561 50 0
VCDI 0 0 0 0 0 244 682 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11856 4366 85 665 154 0 0 0
OW 0 53 24 390 148 0 0 0
VODI 0 3 5 180 266 25 0 0
ODI 0 0 0 2 142 150 18 0
CDI 0 0 0 0 148 435 116 0
VCDI 0 0 0 0 42 324 612 0


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