Description of algorithm
Full domain
  Ice concntr, edge pos
  Contingency tables
American sector
European sector
Asian sector
GODAE regions

Validation of sea ice concentration - Full domain

Bulletin date: 2021-09-16

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

Model vs. observations, sea ice class contingency tables

Date: 2021-09-10:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 124646 18185 143 409 67 0 0 0
OW 0 2590 185 1464 158 6 0 0
VODI 0 793 114 2305 1417 33 0 0
ODI 0 146 29 651 2521 314 4 0
CDI 0 64 1 79 1829 6833 2230 0
VCDI 0 14 1 10 55 6126 11052 2574
...date precedes bulletin

Date: 2021-09-12:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 125928 16676 128 420 62 0 0 0
OW 6 2979 176 1258 176 0 0 0
VODI 0 992 134 2125 1247 24 12 0
ODI 0 176 40 651 1929 487 47 0
CDI 0 79 5 103 1493 5969 2305 0
VCDI 0 1 0 4 112 4432 13086 3786
...date precedes bulletin

Date: 2021-09-14:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 125189 18941 193 803 101 0 0 0
OW 0 1338 198 1380 154 1 0 0
VODI 0 288 89 2319 1293 2 0 0
ODI 0 82 4 207 2666 328 11 0
CDI 0 33 0 9 820 6215 797 80
VCDI 0 0 0 4 46 5128 12395 5934
...date precedes bulletin

Date: 2021-09-16:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 124501 19099 186 769 104 0 0 0
OW 0 1571 211 1525 225 0 0 0
VODI 0 266 70 2125 1431 34 0 0
ODI 0 75 8 237 2063 547 12 1
CDI 0 29 0 18 813 4595 1142 92
VCDI 0 0 0 0 9 6667 13861 4762
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 124501 19237 211 1015 122 0 0 0
OW 0 1245 153 1277 203 2 0 0
VODI 0 457 104 2132 1492 31 0 0
ODI 0 73 7 228 1963 595 13 2
CDI 0 28 0 22 852 4396 1064 120
VCDI 0 0 0 0 13 6819 13938 4733

Date: 2021-09-18:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 125262 17553 174 791 156 0 0 0
OW 0 1835 173 1551 353 0 0 0
VODI 0 373 84 1868 1639 29 0 0
ODI 0 108 7 291 1907 497 15 1
CDI 0 29 1 28 965 4092 775 49
VCDI 0 0 0 0 31 7272 14243 4896
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 125262 17481 203 1069 179 0 0 0
OW 0 1606 117 1328 338 0 0 0
VODI 0 666 110 1779 1735 23 2 0
ODI 0 107 8 322 1809 519 15 1
CDI 0 38 1 31 947 3852 698 49
VCDI 0 0 0 0 43 7496 14318 4896

Date: 2021-09-20:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 124381 18775 194 733 93 0 0 0
OW 0 1152 191 1368 154 0 0 0
VODI 0 219 68 2840 947 4 0 0
ODI 0 127 8 160 2873 93 10 0
CDI 0 0 0 17 767 4815 336 0
VCDI 0 0 0 4 12 6525 15400 4782
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 124381 17817 209 1331 174 0 0 0
OW 0 1554 113 1360 349 0 0 0
VODI 0 706 119 1806 1585 29 8 0
ODI 0 162 19 540 1670 529 15 0
CDI 0 34 1 81 988 3075 594 2
VCDI 0 0 0 4 80 7804 15129 4780

Date: 2021-09-22:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 123968 18760 186 667 71 0 0 0
OW 0 1180 186 1676 187 0 0 0
VODI 0 359 78 2352 1009 12 0 0
ODI 0 145 11 357 2241 152 16 0
CDI 0 0 1 61 1211 3425 179 0
VCDI 0 0 0 0 101 9595 17059 1803
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 123968 17378 185 1172 90 0 0 0
OW 0 1795 114 1249 293 0 0 0
VODI 0 954 121 1847 1485 77 5 0
ODI 0 289 39 705 1644 530 21 0
CDI 0 28 3 140 1115 2466 276 7
VCDI 0 0 0 0 193 10111 16952 1796

Date: 2021-09-24:

Best estimate Forecast
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 122561 19151 202 828 78 0 0 0
OW 0 1083 135 1663 581 0 0 0
VODI 0 347 63 1258 2386 27 0 0
ODI 0 98 9 322 1638 681 0 0
CDI 0 1 2 58 931 2683 268 0
VCDI 0 0 0 4 143 7450 19367 3030
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 122561 17723 191 1040 259 0 0 0
OW 0 1538 79 1145 751 6 0 0
VODI 0 962 95 1278 2183 418 0 0
ODI 0 348 26 391 1320 1142 34 0
CDI 0 109 20 257 807 1821 387 0
VCDI 0 0 0 22 437 7454 19214 3030


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