Validation of sea ice concentration

Bulletin date: 2017-07-27

Model vs. observations, sea ice class contingency tables

Date: 2017-07-21:

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 17926 7270 1934 1122 783 210 105 0
OW 0 0 83 145 272 218 143 0
VODI 0 0 35 100 318 378 341 0
ODI 0 0 15 41 93 306 752 0
CDI 0 0 4 9 7 137 3240 295
VCDI 0 0 1 0 0 0 342 1534
...date precedes bulletin

Date: 2017-07-25:

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 18048 7442 1768 1477 938 279 169 0
OW 0 0 25 107 265 161 101 1
VODI 0 0 13 39 235 265 234 10
ODI 0 0 6 5 61 308 1194 14
CDI 0 0 2 0 45 148 2898 654
VCDI 0 0 1 0 0 1 219 1026
...date precedes bulletin

Date: 2017-07-27:

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 17056 8552 1798 1580 829 343 154 0
OW 0 0 19 89 247 189 130 0
VODI 0 0 5 23 154 301 386 0
ODI 0 0 3 5 42 185 1278 0
CDI 0 0 3 0 29 119 2704 917
VCDI 0 0 0 0 0 2 339 678
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 17056 8552 1812 1602 890 387 173 0
OW 0 0 6 66 199 173 110 0
VODI 0 0 4 22 146 280 407 0
ODI 0 0 1 6 37 177 1286 0
CDI 0 0 4 1 29 120 2686 901
VCDI 0 0 1 0 0 2 329 694

Date: 2017-07-31:

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 18674 7534 1575 1673 708 216 64 0
OW 0 0 23 151 227 84 39 0
VODI 0 0 13 74 250 159 79 0
ODI 0 0 5 20 180 661 325 0
CDI 0 0 0 3 33 530 2698 1486
VCDI 0 0 0 0 0 0 25 650
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 18674 7534 1580 1711 784 240 75 0
OW 0 0 17 121 239 132 55 0
VODI 0 0 10 65 261 463 280 0
ODI 0 0 9 15 72 553 543 0
CDI 0 0 0 9 39 259 2227 1570
VCDI 0 0 0 0 3 3 50 566

Date: 2017-08-02:

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 18881 7655 1369 1645 674 232 70 0
OW 0 0 34 137 233 79 37 0
VODI 0 0 9 78 254 212 79 0
ODI 0 0 4 24 192 602 394 0
CDI 0 0 1 8 28 407 2636 1731
VCDI 0 0 0 0 0 1 28 425
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 18881 7655 1368 1640 749 268 71 0
OW 0 0 30 152 199 137 49 0
VODI 0 0 13 63 338 466 304 0
ODI 0 0 5 24 64 443 527 3
CDI 0 0 1 13 31 218 2256 1821
VCDI 0 0 0 0 0 1 37 332

Date: 2017-08-04:

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 18942 7946 1457 1488 511 173 68 0
OW 0 0 21 158 190 91 45 0
VODI 0 0 8 54 240 262 144 0
ODI 0 0 3 14 66 762 400 7
CDI 0 0 2 4 41 265 2363 1741
VCDI 0 0 0 0 0 3 172 518
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 18942 7946 1447 1474 562 231 82 0
OW 0 0 22 153 200 154 74 0
VODI 0 0 14 64 197 600 363 0
ODI 0 0 5 22 48 401 552 23
CDI 0 0 3 5 41 167 2093 2079
VCDI 0 0 0 0 0 3 28 164


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