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: 2021-03-25

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-03-29

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 0 317 5 35 0 0 0 0
OW 0 44 2 24 0 0 0 0
VODI 0 3 3 41 13 0 0 0
ODI 0 3 2 29 63 0 0 0
CDI 0 0 0 22 108 22 0 0
VCDI 0 0 0 30 187 632 3285 32032
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 316 6 25 0 0 0 0
OW 0 33 0 29 0 0 0 0
VODI 0 13 3 32 22 0 0 0
ODI 0 5 3 23 18 7 0 0
CDI 0 0 0 20 39 23 6 0
VCDI 0 0 0 52 292 624 3279 32032

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 0 0 44 3089
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 44 3089

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 0 366 9616
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 0 366 9616

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 17 33 0
VCDI 0 0 0 0 0 60 1746 3798
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 2 0 0
CDI 0 0 0 0 0 10 42 2
VCDI 0 0 0 0 0 65 1737 3796

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 0
VCDI 0 0 0 0 0 0 0 7246
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 7246

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 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 3 10 1 0 0
CDI 0 0 0 3 51 15 0 0
VCDI 0 0 0 0 142 149 1790 4167
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 4 0 0 0
VCDI 0 0 0 6 199 165 1790 4167

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2989 3842 38 84 11 0 0 0
OW 0 255 28 107 24 1 0 0
VODI 0 198 23 187 88 4 0 0
ODI 0 59 7 151 181 25 0 0
CDI 0 19 5 165 330 264 6 0
VCDI 0 14 3 43 364 637 1128 51
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2989 3606 34 77 23 0 0 0
OW 0 224 19 83 27 4 0 0
VODI 0 199 12 100 86 15 0 0
ODI 0 136 13 67 91 39 0 0
CDI 0 110 13 126 212 158 4 0
VCDI 0 112 13 284 559 715 1130 51

Greenland Basin:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5746 2815 3 19 0 0 0 0
OW 0 119 4 26 0 0 0 0
VODI 0 122 4 30 5 0 0 0
ODI 0 73 3 34 5 0 0 0
CDI 0 101 7 68 51 30 0 0
VCDI 0 82 14 182 310 563 1280 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5746 2575 2 9 0 0 0 0
OW 0 178 4 15 0 0 0 0
VODI 0 130 3 26 3 0 0 0
ODI 0 93 0 32 4 0 0 0
CDI 0 97 2 30 22 16 0 0
VCDI 0 239 24 247 342 577 1280 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 7866 3425 37 131 68 4 0 0
OW 0 43 28 81 23 3 0 0
VODI 0 0 2 90 69 3 0 0
ODI 0 0 0 23 99 7 0 0
CDI 0 0 0 0 148 270 8 0
VCDI 0 0 0 0 47 220 293 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7866 3400 39 126 69 4 0 0
OW 0 54 19 52 28 3 0 0
VODI 0 14 9 78 66 4 0 0
ODI 0 0 0 49 65 20 0 0
CDI 0 0 0 20 99 229 42 0
VCDI 0 0 0 0 127 247 259 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 1 0 0 0
VODI 0 0 0 1 12 0 0 0
ODI 0 0 0 1 16 0 0 0
CDI 0 0 0 0 25 4 0 0
VCDI 0 0 0 0 73 243 2580 2847
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 1 6 0 0 0
VODI 0 0 0 0 8 0 0 0
ODI 0 0 0 1 8 0 0 0
CDI 0 0 0 0 11 3 0 0
VCDI 0 0 0 0 94 244 2580 2847

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 29 34 0
VCDI 0 0 0 0 0 534 5938 2052
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 31 36 0
VCDI 0 0 0 0 0 532 5936 2052

Labrador Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11323 3904 52 190 46 0 0 0
OW 0 112 8 209 158 9 0 0
VODI 0 43 8 127 386 69 0 0
ODI 0 0 0 19 527 145 17 0
CDI 0 0 0 0 165 437 72 0
VCDI 0 0 0 0 31 1161 991 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 11323 3978 57 345 236 1 0 0
OW 0 50 6 101 299 14 0 0
VODI 0 30 3 71 346 79 0 0
ODI 0 1 2 28 227 135 16 0
CDI 0 0 0 0 160 366 87 0
VCDI 0 0 0 0 45 1226 977 0


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