Validation of sea ice concentration

Bulletin date: 2022-08-04

Model vs. observations, sea ice class contingency tables

Date: 2022-07-29:

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 19644 8695 1673 574 171 101 48 0
OW 0 7 94 94 69 46 37 0
VODI 0 0 45 92 110 109 135 0
ODI 0 0 12 33 90 159 461 0
CDI 0 0 0 29 69 137 2909 2129
VCDI 0 0 0 1 2 13 157 214
...date precedes bulletin

Date: 2022-08-02:

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 19067 9234 2194 302 96 122 60 0
OW 0 1 65 95 57 60 39 0
VODI 0 0 15 79 107 147 160 0
ODI 0 0 0 15 63 108 527 171
CDI 0 0 0 7 27 59 2727 1833
VCDI 0 0 0 0 4 10 367 341
...date precedes bulletin

Date: 2022-08-04:

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 19275 9204 2054 268 155 144 49 0
OW 0 1 88 72 64 50 46 0
VODI 0 0 25 67 115 145 137 0
ODI 0 0 0 9 67 93 615 171
CDI 0 0 0 11 27 69 2568 1659
VCDI 0 0 0 0 1 12 523 375
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 19275 9204 2051 287 166 147 50 0
OW 0 1 89 51 57 55 41 0
VODI 0 0 27 69 107 143 146 0
ODI 0 0 0 9 69 76 584 159
CDI 0 0 0 11 28 79 2609 1681
VCDI 0 0 0 0 2 13 508 365

Date: 2022-08-08:

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 19776 8858 1954 292 129 143 22 0
OW 0 0 88 74 79 43 32 0
VODI 0 0 47 69 120 157 86 0
ODI 0 0 0 9 70 131 461 3
CDI 0 0 0 17 19 46 2087 2278
VCDI 0 0 0 0 0 12 192 865
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 19776 8858 1977 316 144 162 29 0
OW 0 0 87 45 76 53 60 0
VODI 0 0 23 68 97 129 203 0
ODI 0 0 2 15 73 109 571 283
CDI 0 0 0 17 27 62 1826 2034
VCDI 0 0 0 0 0 17 191 829

Date: 2022-08-10:

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 21219 7834 1600 296 160 119 21 0
OW 0 0 67 76 74 40 37 0
VODI 0 0 18 79 102 139 125 0
ODI 0 0 0 27 55 99 432 3
CDI 0 0 0 23 41 69 2342 1864
VCDI 0 0 0 0 6 12 669 511
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 21219 7834 1613 312 170 120 33 0
OW 0 0 61 57 70 84 82 0
VODI 0 0 10 62 67 97 250 0
ODI 0 0 1 40 70 89 599 275
CDI 0 0 0 30 54 79 2095 1575
VCDI 0 0 0 0 7 9 567 528

Date: 2022-08-12:

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 20931 8262 1539 315 117 99 17 0
OW 0 0 96 74 62 42 26 0
VODI 0 0 39 81 124 117 107 0
ODI 0 0 5 35 59 108 416 4
CDI 0 0 0 42 55 88 2334 1687
VCDI 0 0 0 0 3 4 658 613
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 20931 8262 1583 327 128 108 24 0
OW 0 0 69 77 86 74 59 0
VODI 0 0 21 54 69 93 267 4
ODI 0 0 6 42 57 72 685 312
CDI 0 0 0 47 73 103 1941 1457
VCDI 0 0 0 0 7 8 582 531


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