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: 2021-07-08

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-07-12

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 0 202 21 63 0 0 0 0
OW 0 9 7 143 11 1 0 0
VODI 0 1 2 275 168 5 0 0
ODI 0 0 0 88 1644 366 2 0
CDI 0 0 0 37 2396 13472 276 0
VCDI 0 0 0 0 1889 12627 3197 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 198 20 78 2 0 0 0
OW 0 11 8 148 50 4 0 0
VODI 0 3 2 178 232 56 4 0
ODI 0 0 0 121 1232 1743 21 0
CDI 0 0 0 81 2441 10389 295 0
VCDI 0 0 0 0 2151 14279 3155 0

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 0 278 13 27 2 0 0 0
OW 0 4 1 0 1 0 0 0
VODI 0 3 1 14 10 0 0 0
ODI 0 2 1 22 51 0 0 0
CDI 0 0 0 3 95 756 0 0
VCDI 0 0 0 2 254 1592 1 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 278 13 27 2 0 0 0
OW 0 1 0 0 2 0 0 0
VODI 0 5 2 8 16 0 0 0
ODI 0 3 1 13 44 2 0 0
CDI 0 0 0 18 91 664 0 0
VCDI 0 0 0 2 258 1682 1 0

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 779 12 35 0 0 0 0
OW 0 27 5 65 1 0 0 0
VODI 0 56 1 120 48 0 0 0
ODI 0 33 2 60 617 15 0 0
CDI 0 0 0 0 1059 2925 0 0
VCDI 0 0 0 0 0 3997 125 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 713 12 46 1 0 0 0
OW 0 47 4 58 14 0 0 0
VODI 0 28 1 83 127 0 0 0
ODI 0 107 3 68 230 45 0 0
CDI 0 0 0 25 1303 1919 0 0
VCDI 0 0 0 0 50 4973 125 0

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 611 1407 26 59 0 0 0 0
OW 1 68 24 154 2 0 0 0
VODI 0 0 1 261 84 0 0 0
ODI 0 0 0 11 760 67 0 0
CDI 0 0 0 0 116 2002 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 612 1342 25 92 2 0 0 0
OW 0 63 10 128 19 0 0 0
VODI 0 70 15 191 140 2 0 0
ODI 0 0 1 72 469 38 0 0
CDI 0 0 0 2 332 2029 0 0
VCDI 0 0 0 0 0 0 0 0

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 2060 35 85 0 0 0 0
OW 0 158 76 463 11 0 0 0
VODI 0 6 8 977 379 0 0 0
ODI 0 1 0 18 2461 113 0 0
CDI 0 0 0 0 36 359 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 0 2038 64 358 5 0 0 0
OW 0 146 36 694 254 0 0 0
VODI 0 40 19 477 1007 3 0 0
ODI 0 1 0 14 1507 122 0 0
CDI 0 0 0 0 114 347 0 0
VCDI 0 0 0 0 0 0 0 0

Laptev Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 1157 3196 32 70 0 0 0 0
OW 0 32 18 121 3 0 0 0
VODI 0 0 3 108 52 0 0 0
ODI 0 0 0 15 240 80 0 0
CDI 0 0 0 0 41 158 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 1157 3184 41 147 3 0 0 0
OW 0 35 11 79 45 0 0 0
VODI 0 9 1 70 132 31 0 0
ODI 0 0 0 18 144 207 0 0
CDI 0 0 0 0 12 0 0 0
VCDI 0 0 0 0 0 0 0 0

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2171 1992 31 101 8 3 0 0
OW 1 16 6 117 42 2 0 0
VODI 0 0 0 33 120 7 0 0
ODI 0 0 0 0 119 72 0 0
CDI 0 0 0 0 1 453 86 0
VCDI 0 0 0 0 0 250 700 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 2171 2005 36 205 92 3 0 0
OW 1 3 1 34 119 32 0 0
VODI 0 0 0 12 69 164 10 0
ODI 0 0 0 0 10 107 99 0
CDI 0 0 0 0 0 197 173 0
VCDI 0 0 0 0 0 284 504 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 9010 1704 14 28 0 0 0 0
OW 0 12 2 92 7 0 0 0
VODI 0 0 0 162 64 0 0 0
ODI 0 0 0 28 183 0 0 0
CDI 0 0 0 0 22 3 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 9010 1696 13 33 0 0 0 0
OW 0 18 2 83 7 0 0 0
VODI 0 2 1 141 42 0 0 0
ODI 0 0 0 51 121 0 0 0
CDI 0 0 0 2 106 3 0 0
VCDI 0 0 0 0 0 0 0 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 8119 2386 34 126 8 0 0 0
OW 0 69 20 203 18 0 0 0
VODI 0 6 5 261 130 0 0 0
ODI 0 0 0 21 261 29 0 0
CDI 0 0 0 0 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 8119 2160 25 187 19 0 0 0
OW 0 180 13 132 33 0 0 0
VODI 0 109 17 226 164 0 0 0
ODI 0 12 4 63 150 3 0 0
CDI 0 0 0 3 51 26 0 0
VCDI 0 0 0 0 0 0 0 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 12263 713 2 7 3 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 12263 713 2 7 3 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 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 449 3547 41 107 47 1 0 0
OW 0 88 25 203 48 1 0 0
VODI 0 4 2 433 286 3 0 0
ODI 0 0 0 28 475 9 0 0
CDI 0 0 0 0 0 6 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 449 3437 45 136 80 1 0 0
OW 0 181 17 204 76 1 0 0
VODI 0 21 6 339 342 10 0 0
ODI 0 0 0 92 356 8 0 0
CDI 0 0 0 0 2 0 0 0
VCDI 0 0 0 0 0 0 0 0

Hudson Bay:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6141 1398 22 151 16 0 0 0
OW 4 17 4 41 57 1 0 0
VODI 0 9 4 57 99 32 0 0
ODI 0 0 0 0 179 92 0 0
CDI 0 0 0 0 21 242 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 5786 1407 24 180 73 21 0 0
OW 308 17 6 35 76 51 0 0
VODI 51 0 0 34 160 111 0 0
ODI 0 0 0 0 62 163 0 0
CDI 0 0 0 0 1 21 0 0
VCDI 0 0 0 0 0 0 0 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 19594 605 3 7 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 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 19594 605 3 7 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 0


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