Validation of sea ice concentration

Bulletin date: 2019-03-07

Model vs. observations, sea ice class contingency tables

Date: 2019-03-01:

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 13594 5711 611 506 153 50 26 0
OW 0 87 169 165 83 26 23 0
VODI 0 19 119 215 130 90 48 0
ODI 0 5 31 122 144 161 135 5
CDI 0 3 13 95 135 237 386 56
VCDI 0 0 8 124 172 785 7507 6210
...date precedes bulletin

Date: 2019-03-05:

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 13065 5796 679 513 222 168 59 0
OW 0 87 109 144 93 65 56 0
VODI 0 12 83 176 115 112 96 0
ODI 0 2 17 150 141 178 165 0
CDI 0 0 6 110 158 350 505 36
VCDI 0 0 29 46 106 775 7978 5757
...date precedes bulletin

Date: 2019-03-07:

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 12794 5688 982 478 302 102 73 0
OW 0 39 139 96 143 69 65 0
VODI 0 5 80 97 163 125 90 0
ODI 0 0 17 106 165 168 159 4
CDI 0 0 5 74 136 276 557 47
VCDI 0 0 25 74 116 465 7902 6333
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 12794 5686 997 484 320 103 81 0
OW 0 41 120 97 133 68 59 0
VODI 0 5 82 90 143 116 92 0
ODI 0 0 20 100 178 163 162 4
CDI 0 0 4 77 133 275 543 40
VCDI 0 0 25 77 118 480 7909 6340

Date: 2019-03-11:

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 12694 5773 730 507 181 258 79 0
OW 0 12 103 153 77 86 52 0
VODI 0 0 52 178 145 200 87 0
ODI 0 0 23 108 118 342 124 0
CDI 0 0 4 74 132 594 484 13
VCDI 0 0 5 13 38 921 7997 5802
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 12694 5761 687 485 190 297 114 0
OW 0 24 99 145 53 87 58 0
VODI 0 0 71 152 110 159 102 0
ODI 0 0 28 67 103 230 151 0
CDI 0 0 10 98 125 436 406 9
VCDI 0 0 22 86 110 1192 7992 5806

Date: 2019-03-13:

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 12607 5760 944 434 189 137 132 0
OW 0 17 137 123 75 57 79 0
VODI 0 0 83 130 100 101 136 0
ODI 0 0 31 83 123 158 197 0
CDI 0 0 2 79 111 242 577 70
VCDI 0 0 1 28 109 448 6454 8205
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 12607 5725 861 413 209 160 189 0
OW 0 40 123 89 36 47 82 0
VODI 0 12 126 125 78 82 159 0
ODI 0 0 58 91 109 111 231 0
CDI 0 0 29 105 112 223 486 31
VCDI 0 0 1 54 163 520 6428 8244

Date: 2019-03-15:

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 12882 5823 730 400 171 114 103 0
OW 0 59 146 93 68 59 69 0
VODI 0 17 113 86 97 84 123 0
ODI 0 7 69 86 108 165 182 0
CDI 0 2 28 67 102 208 542 30
VCDI 0 0 10 68 140 306 6399 8403
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 12882 5767 668 373 180 132 147 0
OW 0 80 107 78 55 43 70 0
VODI 0 42 134 65 65 63 130 0
ODI 0 11 97 96 74 111 172 4
CDI 0 7 61 85 126 220 550 47
VCDI 0 1 29 103 186 367 6349 8382


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