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: 2020-06-11

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2020-06-15

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 61 4 37 20 1 0 0
OW 0 0 1 22 26 9 0 0
VODI 0 0 0 12 54 13 0 0
ODI 0 0 0 14 86 37 6 0
CDI 0 0 0 23 173 1631 521 0
VCDI 0 0 0 0 8 3308 13206 17629
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 61 5 46 30 8 0 0
OW 0 0 0 21 51 13 0 0
VODI 0 0 0 2 77 48 11 0
ODI 0 0 0 11 28 163 36 0
CDI 0 0 0 28 158 1441 1049 0
VCDI 0 0 0 0 23 3326 12637 17629

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 82 6 3 0 0 0 0
OW 0 22 6 46 11 0 0 0
VODI 0 4 0 43 46 0 0 0
ODI 0 6 2 3 45 6 3 0
CDI 0 0 0 0 7 32 21 0
VCDI 0 0 0 0 128 846 1158 607
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 35 3 7 4 0 0 0
OW 0 48 5 27 14 0 0 0
VODI 0 26 5 56 43 4 3 0
ODI 0 5 1 5 29 8 7 0
CDI 0 0 0 0 16 28 53 0
VCDI 0 0 0 0 131 844 1119 607

Beaufort Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 287 28 108 5 0 0 0
OW 0 47 21 104 5 0 0 0
VODI 0 2 1 167 119 0 0 0
ODI 0 0 0 58 415 8 0 0
CDI 0 0 0 67 910 705 31 0
VCDI 0 0 0 0 4 1753 2428 2709
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 231 22 105 5 0 0 0
OW 0 63 14 55 12 0 0 0
VODI 0 42 14 145 97 0 0 0
ODI 0 0 0 69 266 8 0 0
CDI 0 0 0 85 853 260 31 0
VCDI 0 0 0 45 225 2198 2428 2709

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 215 1019 31 49 0 0 0 0
OW 19 40 18 111 4 0 0 0
VODI 0 8 5 118 106 0 0 0
ODI 0 0 0 8 338 41 0 0
CDI 0 0 0 0 132 1743 188 0
VCDI 0 0 0 0 0 274 1162 25
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 217 998 27 58 0 0 0 0
OW 17 64 20 112 20 0 0 0
VODI 0 5 7 91 160 9 0 0
ODI 0 0 0 23 216 65 0 0
CDI 0 0 0 2 184 1612 188 0
VCDI 0 0 0 0 0 372 1162 25

Siberian Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 327 10 117 52 0 0 0
OW 0 49 20 237 39 0 0 0
VODI 0 4 3 320 343 4 0 0
ODI 0 0 0 31 1198 104 0 0
CDI 0 0 0 0 505 2268 37 0
VCDI 0 0 0 0 77 932 569 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 336 20 232 73 0 0 0
OW 0 28 8 207 103 0 0 0
VODI 0 14 4 135 441 6 0 0
ODI 0 2 1 93 618 105 1 0
CDI 0 0 0 38 822 1660 72 0
VCDI 0 0 0 0 157 1537 533 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 0 644 24 84 0 0 0 0
OW 0 47 25 245 22 0 0 0
VODI 0 6 2 216 516 0 0 0
ODI 0 0 0 176 916 124 0 0
CDI 0 0 0 147 302 966 243 0
VCDI 0 1 0 2 6 7 594 11
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 658 41 253 22 0 0 0
OW 0 16 8 165 205 0 0 0
VODI 0 14 1 107 752 67 0 0
ODI 0 9 1 21 358 583 25 0
CDI 0 0 0 322 360 431 449 0
VCDI 0 1 0 2 65 16 363 11

Kara Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 447 2242 48 205 3 1 0 0
OW 0 109 26 337 29 0 0 1
VODI 0 1 3 358 454 2 3 2
ODI 0 0 0 1 551 109 4 0
CDI 0 0 0 0 9 223 66 1
VCDI 0 0 0 0 0 2 1072 22
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 447 2198 59 388 42 1 0 1
OW 0 113 11 266 133 0 3 1
VODI 0 41 7 247 656 65 1 1
ODI 0 0 0 0 202 206 76 1
CDI 0 0 0 0 13 62 245 0
VCDI 0 0 0 0 0 3 820 22

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6843 3421 41 206 4 0 0 0
OW 0 19 10 158 28 0 0 0
VODI 0 0 0 74 166 5 2 0
ODI 0 0 0 0 197 47 10 0
CDI 0 0 0 0 0 67 33 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 6843 3430 49 277 10 0 0 0
OW 0 10 2 148 110 6 2 0
VODI 0 0 0 13 261 87 33 0
ODI 0 0 0 0 14 26 10 0
CDI 0 0 0 0 0 0 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 5455 2664 22 252 135 0 0 0
OW 0 41 8 121 77 0 0 0
VODI 0 10 3 189 222 4 0 0
ODI 0 2 0 21 653 68 1 0
CDI 0 0 0 8 267 1077 107 0
VCDI 0 0 0 0 0 19 270 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 5455 2623 19 249 173 0 0 0
OW 0 60 10 111 98 1 0 0
VODI 0 23 2 168 375 23 0 0
ODI 0 10 2 50 377 125 10 0
CDI 0 1 0 13 331 1019 302 0
VCDI 0 0 0 0 0 0 66 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 10845 1739 22 121 104 0 0 0
OW 0 2 3 17 33 0 0 0
VODI 0 0 0 0 60 0 0 0
ODI 0 0 0 0 42 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 10845 1741 25 138 147 0 0 0
OW 0 0 0 0 64 0 0 0
VODI 0 0 0 0 28 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 0 2348 36 322 4 4 0 0
OW 0 28 19 229 45 7 0 0
VODI 0 0 1 180 461 15 0 0
ODI 0 0 0 1 660 200 0 0
CDI 0 0 0 1 18 878 298 0
VCDI 0 0 0 0 0 0 48 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 2345 40 443 80 6 0 0
OW 0 31 15 218 225 26 0 0
VODI 0 0 1 70 637 75 0 0
ODI 0 0 0 1 231 339 5 0
CDI 0 0 0 1 15 658 321 0
VCDI 0 0 0 0 0 0 20 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 1750 85 415 64 2 0 0
OW 0 18 6 294 152 7 2 0
VODI 0 2 1 83 576 9 2 0
ODI 0 2 0 8 464 237 10 0
CDI 0 16 0 20 220 1506 165 0
VCDI 0 0 0 1 39 1404 1027 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1756 87 630 181 7 3 0
OW 0 14 5 113 301 11 5 0
VODI 0 0 0 47 502 129 18 0
ODI 0 2 0 5 217 339 27 0
CDI 0 13 0 21 197 925 300 0
VCDI 0 3 0 5 117 1754 853 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 15405 3069 58 518 151 0 0 0
OW 0 15 15 103 49 8 0 0
VODI 0 0 1 56 100 34 0 0
ODI 0 0 0 4 98 52 2 0
CDI 0 0 0 0 26 204 124 0
VCDI 0 0 0 0 0 5 112 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 15405 3081 69 568 208 19 0 0
OW 0 3 5 90 65 28 0 0
VODI 0 0 0 23 85 71 2 0
ODI 0 0 0 0 61 93 75 0
CDI 0 0 0 0 5 92 161 0
VCDI 0 0 0 0 0 0 0 0


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