Description of algorithm
Full domain
  Ice concntr, edge pos
  Contingency tables
American sector
European sector
Asian sector
GODAE regions

Validation of sea ice concentration - Full domain

Bulletin date: 2021-09-02

Data source: OSI SAF N.H. sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2021-08-27:

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 123558 16511 144 575 41 11 0 0
OW 14 1868 165 1306 114 8 0 0
VODI 0 833 164 4635 1083 15 0 0
ODI 0 62 3 712 5264 698 22 0
CDI 0 15 1 85 6314 11086 2069 0
VCDI 0 8 3 70 257 3552 4535 1247
...date precedes bulletin

Date: 2021-08-29:

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 123048 16915 160 578 50 22 0 0
OW 14 2226 146 1436 152 9 0 0
VODI 0 1189 166 3941 1100 49 1 0
ODI 0 67 2 1071 4359 763 94 0
CDI 0 12 5 171 5694 10990 1170 14
VCDI 0 0 3 27 953 5730 4608 113
...date precedes bulletin

Date: 2021-08-31:

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 124009 16995 171 592 29 4 0 0
OW 0 2174 221 1476 68 2 0 0
VODI 0 335 104 4433 1106 4 0 0
ODI 0 8 4 521 6756 465 0 0
CDI 0 18 4 156 5183 14801 454 0
VCDI 0 0 0 4 0 2968 3978 5
...date precedes bulletin

Date: 2021-09-02:

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 124479 16529 129 571 48 1 0 0
OW 0 2307 223 1816 110 0 0 0
VODI 0 424 117 3893 1133 7 0 0
ODI 0 21 5 691 5315 378 0 0
CDI 0 27 5 140 5567 13363 823 0
VCDI 0 0 0 6 83 4399 3990 448
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 124479 17120 173 782 63 1 0 0
OW 0 1573 181 1576 109 0 0 0
VODI 0 568 115 3708 1084 6 0 0
ODI 0 20 4 895 5638 321 0 0
CDI 0 27 6 151 4910 12791 689 0
VCDI 0 0 0 5 452 5029 4124 448

Date: 2021-09-04:

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 125704 15245 101 349 35 4 0 0
OW 0 2767 226 1504 137 15 0 0
VODI 0 474 132 3407 1549 35 0 0
ODI 0 35 7 769 3500 1007 0 0
CDI 0 20 6 168 2561 15453 629 0
VCDI 0 1 3 10 47 7313 3835 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 125704 15782 126 538 60 8 0 0
OW 0 2059 191 1452 234 10 0 0
VODI 0 640 142 3072 1372 25 0 0
ODI 0 37 6 959 3966 885 0 0
CDI 0 23 7 176 2141 14708 567 0
VCDI 0 1 3 10 56 8191 3897 0

Date: 2021-09-06:

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 125422 16153 130 450 60 9 0 0
OW 0 2446 168 1127 145 3 0 0
VODI 0 1147 177 2721 930 6 0 0
ODI 0 113 28 1507 2726 192 0 0
CDI 0 77 9 177 3138 11223 414 0
VCDI 0 17 2 49 104 13064 3114 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 125422 16173 121 433 58 12 0 0
OW 0 2400 173 1243 291 3 0 0
VODI 0 1186 184 2585 896 6 0 0
ODI 0 101 26 1524 2710 219 0 0
CDI 0 77 7 185 3024 11545 442 0
VCDI 0 16 3 61 124 12712 3086 0

Date: 2021-09-08:

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 124636 17039 145 696 71 16 0 0
OW 0 2223 142 1174 188 2 0 0
VODI 0 1288 162 2260 985 84 0 0
ODI 0 217 42 1421 2108 424 0 0
CDI 0 74 10 216 2537 7905 314 0
VCDI 0 48 5 69 134 12120 8289 4
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 124636 16538 135 640 75 12 0 0
OW 0 2505 122 1259 252 10 0 0
VODI 0 1398 166 2133 1032 113 0 0
ODI 0 308 68 1390 2048 361 0 0
CDI 0 115 12 342 2477 7419 504 0
VCDI 0 25 3 72 139 12636 8099 4

Date: 2021-09-10:

Best estimate Forecast
...observations not yet available ...observations not yet available


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