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: 2020-05-07

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

Model vs. observations, sea ice class contingency tables

Date: 2020-05-01:

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 70345 15252 258 2113 784 12 0 0
OW 63 149 42 488 844 77 3 0
VODI 0 21 13 244 1036 507 38 0
ODI 0 13 4 83 1110 1218 128 7
CDI 0 9 3 46 893 3655 1474 108
VCDI 0 10 3 49 299 7569 32200 45878
...date precedes bulletin

Date: 2020-05-03:

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 70708 15352 264 1976 891 2 0 0
OW 63 141 44 410 809 133 8 0
VODI 0 119 15 180 1004 434 62 0
ODI 0 10 9 117 924 1159 192 6
CDI 0 0 0 84 747 2984 1526 35
VCDI 0 0 0 37 483 5422 28533 52165
...date precedes bulletin

Date: 2020-05-05:

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 71110 15382 276 1787 309 2 0 0
OW 65 176 56 713 483 2 3 0
VODI 0 5 4 444 1066 99 19 0
ODI 0 0 0 82 1817 577 85 0
CDI 0 0 0 14 1001 3156 614 83
VCDI 0 0 0 0 352 5810 27171 54285
...date precedes bulletin

Date: 2020-05-07:

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 71860 15470 245 1309 291 3 0 0
OW 63 290 81 686 470 10 6 0
VODI 0 42 15 521 1073 220 19 0
ODI 0 0 4 161 1397 635 56 0
CDI 0 0 0 63 1043 2634 825 9
VCDI 0 0 0 17 561 6525 28068 52376
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 71860 15605 260 1407 351 4 0 0
OW 63 165 65 602 430 27 6 0
VODI 0 32 15 478 1042 193 18 0
ODI 0 0 5 185 1314 496 68 0
CDI 0 0 0 65 1119 2460 743 12
VCDI 0 0 0 20 579 6847 28139 52373

Date: 2020-05-09:

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 72041 15683 225 1322 376 6 4 0
OW 63 347 72 475 634 37 11 0
VODI 0 71 26 510 1020 306 54 0
ODI 0 28 12 252 1146 658 108 0
CDI 0 10 7 156 1487 2161 575 54
VCDI 0 6 4 77 1556 9447 27863 48158
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 72041 15894 244 1415 545 9 1 0
OW 63 141 53 407 508 68 12 0
VODI 0 65 25 472 975 285 50 0
ODI 0 26 13 283 1034 588 117 0
CDI 0 17 10 129 1562 1962 554 64
VCDI 0 2 1 86 1595 9703 27881 48148

Date: 2020-05-11:

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 73361 15133 149 968 147 5 8 0
OW 61 324 106 689 319 21 16 0
VODI 0 61 31 821 1187 116 6 0
ODI 0 13 8 174 2297 631 71 0
CDI 0 2 2 88 1601 3725 532 0
VCDI 0 0 0 24 1270 8639 28251 46191
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 73361 15114 163 1307 536 39 17 0
OW 61 272 72 397 484 92 30 0
VODI 0 85 30 483 1072 238 66 0
ODI 0 52 19 291 1164 639 188 0
CDI 0 10 11 205 1589 2369 663 22
VCDI 0 0 1 81 1976 9760 27920 46169

Date: 2020-05-13:

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 74120 14830 199 1083 395 21 16 0
OW 60 337 78 668 607 108 14 0
VODI 0 148 42 674 1305 294 102 0
ODI 0 58 17 350 1540 684 230 0
CDI 0 36 11 244 2322 2455 877 89
VCDI 0 0 4 155 2095 9889 27348 43543
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 74120 14707 192 1144 908 101 53 0
OW 60 297 53 421 546 139 60 0
VODI 0 168 45 570 1026 368 124 0
ODI 0 127 33 396 1097 548 268 0
CDI 0 59 18 437 2275 1922 887 35
VCDI 0 51 10 206 2412 10373 27195 43597

Date: 2020-05-15:

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 74404 15170 186 1125 566 79 3 0
OW 58 528 78 749 772 136 18 0
VODI 0 342 53 618 1483 282 142 0
ODI 0 117 22 489 1273 575 346 68
CDI 0 63 16 375 2070 2317 1154 178
VCDI 0 11 8 218 2034 8186 31914 38822
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 74403 14973 193 1241 1212 158 43 0
OW 59 410 37 359 522 143 35 0
VODI 0 435 55 601 1015 248 160 0
ODI 0 224 36 539 957 489 276 8
CDI 0 135 27 528 2229 2061 1070 84
VCDI 0 54 15 306 2263 8476 31993 38976


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