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: 2021-06-10

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-06-14

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 38 5 28 31 6 0 0
OW 0 23 7 24 19 10 0 0
VODI 0 10 3 42 49 18 0 0
ODI 0 0 0 24 121 25 0 0
CDI 0 0 0 18 302 1484 177 0
VCDI 0 0 0 0 398 3938 11996 18106
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 26 8 32 49 14 0 0
OW 0 5 0 14 19 18 0 0
VODI 0 23 3 24 22 28 0 0
ODI 0 17 4 43 115 41 3 0
CDI 0 0 0 23 293 1386 452 0
VCDI 0 0 0 0 422 3994 11718 18106

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 0 159 2 11 0 0 0 0
OW 0 15 3 13 1 0 0 0
VODI 0 10 0 44 11 0 0 0
ODI 0 6 6 25 9 3 1 0
CDI 0 12 2 14 14 42 78 0
VCDI 0 0 0 35 93 146 1226 1152
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 57 1 8 0 0 0 0
OW 0 68 1 9 0 0 0 0
VODI 0 40 3 31 4 0 0 0
ODI 0 25 6 40 10 3 6 0
CDI 0 12 2 19 21 45 109 0
VCDI 0 0 0 35 93 143 1190 1152

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 157 12 61 6 0 0 0
OW 0 73 14 56 6 0 0 0
VODI 0 16 0 157 54 0 0 0
ODI 0 11 1 57 202 3 0 0
CDI 0 75 8 50 460 540 57 0
VCDI 0 5 1 54 192 967 2774 3913
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 63 14 67 6 0 0 0
OW 0 51 1 40 23 0 0 0
VODI 0 102 7 121 128 0 0 0
ODI 0 20 4 77 78 5 0 0
CDI 0 35 3 42 366 545 71 0
VCDI 0 66 7 88 319 960 2760 3913

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 517 10 37 5 0 0 0
OW 0 152 3 19 1 0 0 0
VODI 0 63 2 63 4 0 0 0
ODI 0 43 1 73 109 6 0 0
CDI 0 147 15 130 259 614 103 0
VCDI 0 0 0 0 0 124 2152 1002
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 472 9 36 5 0 0 0
OW 0 81 3 6 1 0 0 0
VODI 0 75 1 15 1 0 0 0
ODI 0 81 1 56 15 0 0 0
CDI 0 202 13 145 244 555 404 0
VCDI 0 11 4 64 112 189 1851 1002

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 288 8 22 0 0 0 0
OW 0 93 11 46 1 0 0 0
VODI 0 23 5 105 42 11 0 0
ODI 0 23 2 25 237 90 2 0
CDI 0 20 4 48 1242 2288 288 0
VCDI 0 0 0 0 153 1062 1107 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 274 7 51 1 0 0 0
OW 0 70 5 29 14 1 0 0
VODI 0 45 12 51 63 12 0 0
ODI 0 24 1 50 118 141 0 0
CDI 0 34 5 57 383 1643 263 0
VCDI 0 0 0 8 1096 1654 1134 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 0 1246 46 97 20 35 0 0
OW 0 82 28 154 63 49 0 0
VODI 0 25 4 239 249 80 0 0
ODI 0 10 0 14 966 314 0 0
CDI 0 4 2 1 34 919 161 0
VCDI 0 0 0 0 6 0 478 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 972 41 140 24 116 0 0
OW 0 182 14 123 122 108 0 0
VODI 0 157 13 134 439 283 0 0
ODI 0 51 10 105 632 332 2 0
CDI 0 5 2 3 115 558 434 0
VCDI 0 0 0 0 6 0 203 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 0 1052 59 259 2 0 0 0
OW 0 103 21 281 33 0 0 0
VODI 0 9 7 527 286 0 4 0
ODI 0 0 0 8 958 104 4 0
CDI 0 0 0 0 29 444 34 0
VCDI 0 0 0 0 0 162 1856 89
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1046 56 355 57 0 0 0
OW 0 63 19 240 180 5 0 0
VODI 0 39 6 230 324 161 6 0
ODI 0 16 6 250 692 143 31 0
CDI 0 0 0 0 55 199 281 0
VCDI 0 0 0 0 0 202 1580 89

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7230 2976 14 39 2 0 0 0
OW 0 199 26 58 1 0 0 0
VODI 0 5 6 146 77 0 0 0
ODI 0 0 0 22 346 5 0 0
CDI 0 0 0 0 145 28 0 0
VCDI 0 0 0 0 1 5 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7230 3118 29 113 9 0 0 0
OW 0 59 14 98 42 0 0 0
VODI 0 3 3 42 180 6 0 0
ODI 0 0 0 12 167 9 0 0
CDI 0 0 0 0 174 22 0 0
VCDI 0 0 0 0 0 1 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 6306 2993 29 160 10 0 0 0
OW 0 34 7 140 8 0 0 0
VODI 0 6 3 124 160 3 0 0
ODI 0 0 0 14 444 18 2 0
CDI 0 0 0 69 594 407 22 0
VCDI 0 0 0 0 0 64 79 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6306 2940 29 205 9 0 0 0
OW 0 70 5 105 67 0 0 0
VODI 0 23 5 119 201 10 0 0
ODI 0 0 0 9 259 44 18 0
CDI 0 0 0 69 675 363 54 0
VCDI 0 0 0 0 5 75 31 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 8660 3353 54 287 115 10 0 0
OW 0 18 3 65 45 0 0 0
VODI 0 0 0 14 86 14 0 0
ODI 0 0 0 0 73 46 5 0
CDI 0 0 0 0 8 94 38 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 8660 3371 57 352 201 22 0 0
OW 0 0 0 14 83 34 2 0
VODI 0 0 0 0 43 83 19 0
ODI 0 0 0 0 0 23 17 0
CDI 0 0 0 0 0 2 5 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 1302 30 139 46 7 0 0
OW 0 47 18 121 60 6 0 0
VODI 0 12 5 187 118 28 0 0
ODI 0 0 1 43 550 92 3 0
CDI 0 0 0 13 196 1335 200 2
VCDI 0 0 0 0 0 30 1212 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1285 30 167 94 16 0 0
OW 0 51 13 89 56 34 1 0
VODI 0 16 8 154 162 79 15 0
ODI 0 7 2 56 398 135 6 2
CDI 0 2 1 37 260 1218 353 0
VCDI 0 0 0 0 0 16 1040 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 0 953 65 373 35 6 4 0
OW 0 93 29 313 69 13 1 0
VODI 0 13 2 346 454 36 6 0
ODI 0 4 0 59 824 174 14 0
CDI 0 0 0 28 466 2072 850 0
VCDI 0 0 0 6 44 233 1002 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 916 61 454 70 15 1 0
OW 0 100 25 245 174 29 6 0
VODI 0 42 9 242 439 80 23 0
ODI 0 4 1 119 505 294 30 0
CDI 0 1 0 50 480 1875 1095 0
VCDI 0 0 0 15 224 241 722 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 16878 2595 41 305 175 9 0 0
OW 0 20 1 28 33 2 0 0
VODI 0 0 4 10 34 7 0 0
ODI 0 0 0 0 15 16 0 0
CDI 0 0 0 0 1 26 9 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 16878 2551 41 309 210 13 0 0
OW 0 64 1 27 34 25 0 0
VODI 0 0 4 7 14 21 9 0
ODI 0 0 0 0 0 1 0 0
CDI 0 0 0 0 0 0 0 0
VCDI 0 0 0 0 0 0 0 0


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