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: 2022-06-16

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2022-06-20

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 0 104 0 15 3 0 0 0
OW 0 62 3 19 0 0 0 0
VODI 0 40 4 40 6 0 0 0
ODI 0 37 4 31 44 0 0 0
CDI 0 42 7 89 465 390 134 0
VCDI 0 0 0 0 25 2264 16099 16975
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 69 0 8 3 0 0 0
OW 0 35 1 25 0 0 0 0
VODI 0 57 4 24 4 1 1 0
ODI 0 56 4 27 29 2 14 0
CDI 0 68 9 110 478 351 1291 564
VCDI 0 0 0 0 29 2300 14927 16411

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 1 0 0 0 0
OW 0 0 0 3 0 0 0 0
VODI 0 0 0 7 0 0 0 0
ODI 0 0 0 6 17 1 0 0
CDI 0 0 0 4 48 36 56 0
VCDI 0 6 1 17 699 859 579 793
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 1 0 0 0 0
OW 0 0 0 4 0 0 0 0
VODI 0 0 0 7 1 0 0 0
ODI 0 0 0 5 3 5 2 0
CDI 0 0 0 1 25 35 63 0
VCDI 0 6 1 20 735 856 570 793

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 48 33 0 0
VCDI 0 0 0 137 757 1993 6092 922
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 37 8 0 0
VCDI 0 0 0 137 768 2018 6092 922

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 1135 10 20 1 0 0 0
OW 0 124 14 31 0 0 0 0
VODI 0 49 5 92 8 0 0 0
ODI 0 48 7 77 60 0 0 0
CDI 0 93 17 146 452 449 2 0
VCDI 0 0 0 0 23 1950 841 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 943 4 14 1 0 0 0
OW 0 131 2 2 0 0 0 0
VODI 0 115 14 31 2 0 0 0
ODI 0 60 8 72 6 0 0 0
CDI 0 175 18 176 317 144 0 0
VCDI 0 25 7 71 218 2255 843 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 0 0 0 0 0 0 0
OW 0 0 0 11 0 0 0 0
VODI 0 2 3 35 4 2 0 0
ODI 0 7 2 29 31 20 0 0
CDI 0 1 1 50 316 412 0 0
VCDI 0 0 0 142 420 2573 3185 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 0 0 0 0 0
OW 0 0 0 4 0 0 0 0
VODI 0 0 2 26 0 0 0 0
ODI 0 5 2 31 17 19 0 0
CDI 0 5 2 63 216 323 0 0
VCDI 0 0 0 143 538 2665 3185 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 0 954 24 69 13 14 2 0
OW 0 103 25 121 34 36 6 0
VODI 0 57 12 157 137 25 8 0
ODI 0 104 13 58 319 153 10 0
CDI 0 36 9 87 194 858 70 0
VCDI 0 0 0 9 68 194 1330 17
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 756 21 95 31 41 12 0
OW 0 174 16 104 82 45 12 0
VODI 0 108 15 82 150 66 9 0
ODI 0 40 9 71 112 188 1 0
CDI 0 164 19 116 325 802 917 0
VCDI 0 12 3 33 65 138 475 17

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 1665 22 121 6 0 0 0
OW 0 289 56 302 30 5 0 0
VODI 0 200 31 824 401 18 1 0
ODI 0 0 1 102 1098 128 1 0
CDI 0 0 0 7 194 634 57 0
VCDI 0 0 0 0 0 26 112 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 1716 34 257 21 0 0 0
OW 0 221 37 356 167 10 0 0
VODI 0 122 25 472 319 49 1 0
ODI 0 95 14 254 790 207 1 0
CDI 0 0 0 17 432 520 163 0
VCDI 0 0 0 0 0 25 6 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 7964 3111 22 20 4 0 0 0
OW 0 36 4 34 7 0 0 0
VODI 0 14 1 58 22 0 0 0
ODI 0 0 0 12 22 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 7964 3126 26 41 3 0 0 0
OW 0 33 0 44 9 0 0 0
VODI 0 2 1 31 35 0 0 0
ODI 0 0 0 8 8 0 0 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 6425 2769 22 188 0 0 0 0
OW 0 62 14 169 27 1 0 0
VODI 0 0 1 271 117 5 0 0
ODI 0 0 0 131 396 25 0 0
CDI 0 0 0 1 699 26 0 0
VCDI 0 0 0 0 69 99 179 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 6425 2713 22 232 17 0 0 0
OW 0 113 8 117 46 0 0 0
VODI 0 5 7 202 110 5 0 0
ODI 0 0 0 110 207 22 0 0
CDI 0 0 0 99 672 20 0 0
VCDI 0 0 0 0 256 109 179 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 8934 3164 40 183 82 0 0 0
OW 0 46 8 50 41 0 0 0
VODI 0 8 7 78 90 2 0 0
ODI 0 0 0 0 80 45 0 0
CDI 0 0 0 0 5 119 6 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 8934 3153 43 220 141 0 0 0
OW 0 41 5 25 85 4 0 0
VODI 0 24 7 58 58 99 0 0
ODI 0 0 0 8 14 63 6 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 0 895 33 439 32 0 0 0
OW 0 37 21 289 73 0 0 0
VODI 0 0 0 264 233 5 0 0
ODI 0 0 0 22 853 122 0 0
CDI 0 0 0 0 260 1574 121 0
VCDI 0 0 0 0 0 132 398 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 819 27 472 85 1 0 0
OW 0 86 22 265 144 4 0 0
VODI 0 25 2 192 227 36 0 0
ODI 0 2 3 85 509 95 2 0
CDI 0 0 0 0 486 1417 95 0
VCDI 0 0 0 0 0 280 422 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 261 3086 61 424 61 0 0 0
OW 0 42 19 189 197 0 0 0
VODI 0 2 0 148 578 6 1 0
ODI 0 0 0 22 1924 217 8 0
CDI 0 4 0 42 454 575 50 0
VCDI 0 0 0 0 4 98 114 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 261 3078 63 496 255 2 0 0
OW 0 49 17 181 446 6 1 0
VODI 0 2 0 76 1035 98 16 0
ODI 0 1 0 22 796 214 21 0
CDI 0 4 0 16 553 398 59 0
VCDI 0 0 0 34 133 178 76 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 16199 2653 45 456 6 0 0 0
OW 0 13 26 97 12 0 0 0
VODI 0 0 0 72 129 0 0 0
ODI 0 0 0 0 258 2 0 0
CDI 0 0 0 0 29 179 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 16199 2655 62 548 45 0 0 0
OW 0 11 7 60 123 0 0 0
VODI 0 0 2 17 159 2 0 0
ODI 0 0 0 0 105 44 0 0
CDI 0 0 0 0 2 135 33 0
VCDI 0 0 0 0 0 0 0 0


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