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: 2021-06-24

Model: ARC MFC - TOPAZ

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

Model vs. observations, sea ice class contingency tables

Date: 2021-06-28

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 0 102 4 24 7 0 0 0
OW 0 8 6 45 13 2 0 0
VODI 0 16 0 65 76 14 0 0
ODI 0 12 4 30 222 27 4 0
CDI 0 2 3 70 658 5158 650 0
VCDI 0 0 0 0 41 6276 17214 6149
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 104 9 39 21 3 0 0
OW 0 0 0 41 23 17 2 0
VODI 0 1 0 35 83 30 3 0
ODI 0 9 1 12 145 127 24 0
CDI 0 26 7 107 401 4637 1958 0
VCDI 0 0 0 0 344 6663 15881 6149

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 0 213 21 60 16 0 0 0
OW 0 3 0 5 1 0 0 0
VODI 0 2 4 16 0 1 0 0
ODI 0 3 1 4 0 2 0 0
CDI 0 4 1 5 285 28 0 0
VCDI 0 6 2 51 1187 603 609 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 195 13 46 17 0 0 0
OW 0 17 8 17 0 1 0 0
VODI 0 4 4 10 0 2 0 0
ODI 0 2 1 9 0 4 0 0
CDI 0 5 0 3 41 6 0 0
VCDI 0 8 3 56 1431 621 609 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 0 535 15 75 4 0 0 0
OW 0 58 4 22 18 0 0 0
VODI 0 21 3 43 46 0 0 0
ODI 0 19 3 37 152 0 0 0
CDI 0 86 10 167 1224 232 0 0
VCDI 0 0 0 7 1072 4237 1768 124
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 452 15 68 29 0 0 0
OW 0 61 0 18 31 0 0 0
VODI 0 47 4 30 39 0 0 0
ODI 0 33 3 38 63 0 0 0
CDI 0 87 6 94 859 123 0 0
VCDI 0 39 7 103 1495 4346 1768 124

Chuckchi Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 144 1148 3 4 0 0 0 0
OW 1 110 16 37 0 0 0 0
VODI 0 66 14 142 37 0 0 0
ODI 0 26 4 64 290 6 0 0
CDI 0 1 0 47 326 1195 233 0
VCDI 0 0 0 0 0 114 1609 17
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 144 1053 4 18 0 0 0 0
OW 1 101 9 16 4 0 0 0
VODI 0 75 14 79 15 0 0 0
ODI 0 63 3 64 146 5 0 0
CDI 0 59 7 117 488 1183 1494 17
VCDI 0 0 0 0 0 127 348 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 0 800 26 91 18 0 0 0
OW 0 83 19 112 60 0 0 0
VODI 0 21 16 262 270 3 0 0
ODI 0 0 0 39 1899 279 0 0
CDI 0 0 0 1 290 2894 62 0
VCDI 0 0 0 1 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 0 784 36 135 106 1 0 0
OW 0 60 8 132 104 20 0 0
VODI 0 60 11 123 483 160 0 0
ODI 0 0 6 98 1112 597 25 0
CDI 0 0 0 17 732 2398 37 0
VCDI 0 0 0 1 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 0 1784 86 634 397 0 0 0
OW 0 25 19 279 325 0 0 0
VODI 0 0 2 236 452 0 0 0
ODI 0 0 0 35 383 15 0 0
CDI 0 0 0 0 31 623 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 1787 88 797 804 0 0 0
OW 0 22 18 215 327 0 0 0
VODI 0 0 1 130 355 15 0 0
ODI 0 0 0 36 100 189 0 0
CDI 0 0 0 6 2 434 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 297 2694 37 135 4 0 0 0
OW 0 72 41 183 35 0 0 0
VODI 0 0 0 270 212 13 0 0
ODI 0 0 0 1 297 84 1 0
CDI 0 0 0 0 6 270 173 0
VCDI 0 0 0 0 0 60 1370 76
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 297 2687 55 220 49 4 0 0
OW 0 75 17 161 151 41 0 0
VODI 0 4 6 193 260 125 55 0
ODI 0 0 0 15 68 115 94 0
CDI 0 0 0 0 26 85 216 0
VCDI 0 0 0 0 0 57 1179 76

Barents Sea:

observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 7685 2918 18 57 0 0 0 0
OW 0 16 7 94 1 0 0 0
VODI 0 0 0 75 55 0 0 0
ODI 0 0 0 9 219 10 0 0
CDI 0 0 0 0 125 42 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 7685 2916 21 95 0 0 0 0
OW 0 15 2 90 23 0 0 0
VODI 0 3 2 34 92 3 0 0
ODI 0 0 0 16 134 19 0 0
CDI 0 0 0 0 151 30 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 7101 2595 21 64 0 0 0 0
OW 0 54 8 154 3 2 0 0
VODI 0 12 8 332 126 3 0 0
ODI 0 0 0 227 599 61 0 0
CDI 0 0 0 35 94 194 3 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 7101 2542 21 129 0 1 0 0
OW 0 70 6 171 27 2 0 0
VODI 0 43 9 214 153 14 0 0
ODI 0 6 1 125 289 61 0 0
CDI 0 0 0 173 353 182 3 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 9300 3264 10 48 79 0 0 0
OW 0 52 9 54 55 0 0 0
VODI 0 2 0 50 65 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 9300 3292 15 89 175 0 0 0
OW 0 24 4 55 17 0 0 0
VODI 0 2 0 8 7 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 23 2040 51 256 34 26 0 0
OW 0 49 23 314 43 11 0 0
VODI 0 3 4 485 409 12 0 0
ODI 0 0 0 26 1401 81 0 0
CDI 0 0 0 0 211 299 0 0
VCDI 0 0 0 0 0 2 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 23 1978 47 330 63 32 0 0
OW 0 68 28 307 111 14 0 0
VODI 0 46 3 353 279 20 0 0
ODI 0 0 0 91 772 14 0 0
CDI 0 0 0 0 873 325 0 0
VCDI 0 0 0 0 0 26 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 590 2912 69 325 57 0 0 0
OW 0 75 31 347 52 0 0 0
VODI 0 4 4 554 475 15 5 0
ODI 0 0 0 65 1769 198 14 0
CDI 0 0 0 58 161 602 174 0
VCDI 0 0 0 0 0 0 31 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 590 2899 75 557 174 0 0 0
OW 0 87 24 253 570 4 0 0
VODI 0 5 5 307 779 33 7 0
ODI 0 0 0 125 795 476 14 0
CDI 0 0 0 107 196 302 203 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 18502 1555 15 61 2 0 0 0
OW 0 23 3 15 2 0 0 0
VODI 0 4 4 14 9 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 18502 1565 17 68 3 0 0 0
OW 0 15 2 15 5 0 0 0
VODI 0 2 3 7 5 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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