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: 2024-07-04

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2024-06-28:

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 87663 17114 333 351 49 7 0 0
OW 45 3544 855 1643 211 48 0 0
VODI 11 761 457 3474 1624 139 1 0
ODI 3 66 107 2127 5931 1148 13 0
CDI 0 29 8 509 7193 18478 2311 0
VCDI 0 13 1 68 3348 32151 2906 3
...date precedes bulletin

Date: 2024-06-30:

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 88744 16121 274 337 54 0 0 0
OW 28 4109 761 1496 249 1 0 0
VODI 12 1061 535 3493 2031 82 0 0
ODI 2 262 301 2225 5767 837 4 0
CDI 0 51 18 881 7743 19325 1311 0
VCDI 0 9 1 213 4371 29638 2389 7
...date precedes bulletin

Date: 2024-07-02:

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 90044 17406 338 285 61 0 0 0
OW 42 4327 1177 1242 197 2 0 0
VODI 9 327 508 5906 1954 13 0 0
ODI 1 27 10 1176 8918 1700 1 0
CDI 34 3 3 399 6072 26710 454 0
VCDI 16 0 0 40 2715 20709 1917 0
...date precedes bulletin

Date: 2024-07-04:

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 92020 16387 274 267 41 0 0 0
OW 87 4566 924 1290 208 12 0 0
VODI 8 583 600 5704 2340 52 0 0
ODI 7 42 53 1474 8645 991 1 0
CDI 43 14 5 733 9730 24026 643 0
VCDI 16 0 0 41 1539 16901 4474 2
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 92010 16709 312 302 61 0 0 0
OW 94 4272 879 1348 224 12 0 0
VODI 11 554 610 5539 2328 51 0 0
ODI 5 42 49 1528 8424 1203 0 0
CDI 42 15 6 744 9862 23535 590 0
VCDI 19 0 0 48 1604 17181 4528 2

Date: 2024-07-06:

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 93260 16069 252 299 38 0 0 0
OW 158 4818 898 1371 254 4 0 0
VODI 10 720 626 5405 2567 78 0 0
ODI 3 76 95 1610 7852 1310 2 0
CDI 31 5 4 786 8500 24267 703 0
VCDI 16 0 0 46 1914 19136 1560 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 93242 16519 296 369 54 2 0 0
OW 180 4342 838 1468 269 5 0 0
VODI 6 728 629 5198 2524 116 0 0
ODI 1 94 102 1641 7721 1519 0 0
CDI 30 5 10 768 8355 23449 609 0
VCDI 19 0 0 73 2202 19704 1656 0

Date: 2024-07-08:

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 94987 17673 221 146 25 2 0 0
OW 62 3894 1643 1268 87 2 0 0
VODI 21 87 167 7246 1476 33 0 0
ODI 13 9 2 1056 13125 711 0 0
CDI 26 1 5 154 5189 30357 538 0
VCDI 6 0 0 64 741 11569 2137 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 94897 15867 267 253 61 2 0 0
OW 145 4441 809 1698 332 6 0 0
VODI 8 1047 782 4523 2544 225 0 0
ODI 9 289 142 1784 6900 1812 4 0
CDI 38 20 38 1475 8688 22164 1094 0
VCDI 18 0 0 201 2118 18465 1577 0

Date: 2024-07-10:

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 96488 16877 158 159 46 2 0 0
OW 63 4515 1276 1329 124 0 0 0
VODI 21 549 745 6631 1704 16 0 0
ODI 15 55 26 1740 10852 1771 0 0
CDI 25 7 4 448 5278 31985 214 0
VCDI 2 0 1 38 637 10628 314 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 96428 14848 215 313 66 2 0 0
OW 115 5029 749 1661 389 6 0 0
VODI 8 1524 867 4391 2318 124 0 0
ODI 10 451 223 2101 6619 1503 0 0
CDI 38 151 155 1657 7544 24132 130 0
VCDI 15 0 1 222 1705 18635 398 0

Date: 2024-07-12:

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 97361 16577 148 123 56 0 0 0
OW 89 5180 1120 1515 134 6 0 0
VODI 19 1054 763 6217 2044 23 0 0
ODI 16 95 114 2049 9797 1343 1 0
CDI 25 35 20 582 5417 33893 314 0
VCDI 1 12 3 46 942 7557 52 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 97285 14461 205 277 36 0 0 0
OW 154 5615 719 1888 440 8 0 0
VODI 11 1931 807 3937 2267 156 0 0
ODI 19 712 259 2476 6179 1210 1 0
CDI 29 216 169 1562 6580 25762 161 0
VCDI 13 18 9 392 2888 15686 205 0


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