Validation of sea ice concentration

Bulletin date: 2022-03-17

Model vs. observations, sea ice class contingency tables

Date: 2022-03-11:

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 13422 5576 989 223 102 46 90 0
OW 0 76 245 105 37 35 40 0
VODI 0 35 215 179 86 54 71 0
ODI 0 13 82 180 141 135 187 0
CDI 0 9 63 175 207 162 526 36
VCDI 0 0 124 273 500 676 7659 5385
...date precedes bulletin

Date: 2022-03-15:

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 14202 5726 847 204 92 37 67 0
OW 0 67 249 115 57 32 36 0
VODI 0 16 128 162 132 86 127 0
ODI 0 13 30 130 141 162 158 3
CDI 0 14 14 83 187 287 661 34
VCDI 0 52 70 302 448 1062 6952 4974
...date precedes bulletin

Date: 2022-03-17:

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 14140 5756 869 209 134 34 47 0
OW 0 54 410 128 73 44 60 0
VODI 0 14 200 203 120 73 141 0
ODI 0 10 80 132 173 111 218 1
CDI 0 11 30 146 172 221 799 62
VCDI 0 12 133 482 382 504 7363 4408
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 14140 5746 841 201 123 37 54 0
OW 0 64 412 102 66 46 57 0
VODI 0 15 218 217 137 64 132 0
ODI 0 10 87 152 171 109 200 1
CDI 0 9 31 160 172 220 793 58
VCDI 0 13 133 468 385 511 7392 4412

Date: 2022-03-21:

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 13998 5761 988 301 116 42 41 0
OW 0 109 185 168 119 58 30 0
VODI 0 60 194 278 170 156 77 0
ODI 0 16 139 250 208 269 136 0
CDI 0 6 128 192 223 532 777 2
VCDI 0 2 83 138 249 796 7577 3585
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13998 5536 826 238 107 52 36 0
OW 0 198 189 147 120 63 42 0
VODI 0 112 192 225 110 138 88 0
ODI 0 36 107 205 123 147 109 0
CDI 0 36 84 151 181 394 489 4
VCDI 0 36 319 361 444 1059 7874 3583

Date: 2022-03-23:

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 13286 5963 1116 341 99 41 51 0
OW 0 98 259 215 108 81 21 0
VODI 0 35 158 226 162 113 67 0
ODI 0 46 125 164 156 179 124 0
CDI 0 21 90 139 171 365 484 5
VCDI 0 22 275 265 393 1021 7858 3816
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13286 5786 1014 292 98 51 50 0
OW 0 149 205 164 90 62 29 0
VODI 0 106 194 156 121 131 61 0
ODI 0 27 126 159 125 174 103 0
CDI 0 32 107 182 150 253 370 6
VCDI 0 85 377 397 505 1129 7992 3815

Date: 2022-03-25:

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 13240 5707 857 324 144 84 87 0
OW 0 103 224 142 125 87 40 0
VODI 0 53 172 165 164 201 77 0
ODI 0 11 80 129 201 215 137 0
CDI 0 0 46 77 136 293 453 5
VCDI 0 0 147 212 292 658 7474 5597
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 13240 5577 818 331 159 91 81 0
OW 0 113 163 100 103 79 45 0
VODI 0 91 152 122 116 172 82 0
ODI 0 63 106 96 94 147 172 0
CDI 0 30 98 134 150 269 471 18
VCDI 0 0 189 266 440 780 7417 5584


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