Validation of sea ice concentration

Bulletin date: 2017-09-28

Model vs. observations, sea ice class contingency tables

Date: 2017-09-22:

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 24991 5496 612 443 111 16 0 0
OW 0 2 51 142 87 19 1 0
VODI 0 0 25 109 157 63 12 0
ODI 0 0 4 56 125 150 80 0
CDI 0 0 0 9 55 362 387 2
VCDI 0 0 0 0 21 267 2129 2175
...date precedes bulletin

Date: 2017-09-26:

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 25484 5027 492 387 225 59 0 0
OW 0 0 23 46 88 70 0 0
VODI 0 0 12 28 80 141 32 0
ODI 0 0 3 8 32 146 120 0
CDI 0 0 0 2 31 283 463 0
VCDI 0 0 0 0 4 247 2270 2356
...date precedes bulletin

Date: 2017-09-28:

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 24397 5848 797 386 130 53 1 0
OW 0 0 32 71 87 54 6 0
VODI 0 0 5 60 82 114 31 0
ODI 0 0 5 5 41 136 115 0
CDI 0 0 0 3 9 168 582 0
VCDI 0 0 0 0 1 221 2384 2335
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 24397 5847 776 372 135 56 1 0
OW 0 1 53 87 96 59 8 0
VODI 0 0 5 51 71 132 36 0
ODI 0 0 4 12 39 124 102 0
CDI 0 0 1 3 8 148 604 0
VCDI 0 0 0 0 1 227 2368 2335

Date: 2017-10-02:

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 24514 5917 842 401 100 17 4 0
OW 0 0 31 96 73 31 0 0
VODI 0 0 4 47 112 92 30 0
ODI 0 0 1 13 80 161 121 0
CDI 0 0 0 13 79 462 412 0
VCDI 0 0 0 0 50 234 2268 1954
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 24514 5887 751 339 96 23 5 0
OW 0 30 91 116 52 38 1 0
VODI 0 0 33 70 103 74 16 0
ODI 0 0 3 26 69 101 66 0
CDI 0 0 0 17 97 330 187 0
VCDI 0 0 0 2 77 431 2560 1954

Date: 2017-10-04:

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 24448 5941 821 391 139 26 8 0
OW 0 1 35 74 73 46 6 0
VODI 0 0 8 44 76 111 42 0
ODI 0 0 0 18 45 106 107 0
CDI 0 0 0 2 48 259 433 0
VCDI 0 0 0 0 36 223 2460 2132
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 24448 5885 759 332 127 36 8 0
OW 0 51 72 76 61 59 5 0
VODI 0 6 26 82 86 91 41 0
ODI 0 0 7 27 44 102 105 0
CDI 0 0 0 12 52 255 421 0
VCDI 0 0 0 0 47 228 2476 2132

Date: 2017-10-06:

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 24748 5522 729 335 133 42 5 0
OW 0 10 53 89 39 46 10 0
VODI 0 0 28 72 71 92 23 0
ODI 0 0 0 13 49 109 79 0
CDI 0 0 0 12 35 147 264 0
VCDI 0 0 0 1 34 260 2521 2588
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 24748 5527 701 336 137 86 18 0
OW 0 5 87 96 51 75 31 0
VODI 0 0 21 55 70 106 109 0
ODI 0 0 1 14 30 77 162 0
CDI 0 0 0 17 29 121 383 0
VCDI 0 0 0 4 44 231 2199 2588


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