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: 2024-06-06

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

Model vs. observations, sea ice class contingency tables

Date: 2024-05-31:

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 75403 14633 149 183 3 4 0 0
OW 3 2846 594 874 133 11 0 0
VODI 0 637 462 3051 868 100 11 0
ODI 0 168 98 1381 2933 525 47 0
CDI 0 192 95 937 4952 8150 1370 0
VCDI 0 0 13 278 1798 8912 33650 29279
...date precedes bulletin

Date: 2024-06-02:

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 76444 13431 134 112 18 0 0 0
OW 1 3349 498 956 219 7 1 0
VODI 0 1093 501 2568 999 89 5 0
ODI 0 340 155 1489 2861 536 36 0
CDI 0 360 102 1341 5310 7445 1911 103
VCDI 0 1 10 320 1716 6995 37479 25808
...date precedes bulletin

Date: 2024-06-04:

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 76937 15015 91 135 22 0 0 0
OW 26 3831 883 945 141 19 2 0
VODI 0 607 379 3829 1000 75 1 0
ODI 0 77 56 1148 4299 372 20 0
CDI 0 3 25 453 4275 8330 1290 1
VCDI 0 18 0 229 1133 6968 36478 25630
...date precedes bulletin

Date: 2024-06-06:

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 78147 14940 139 148 38 0 0 0
OW 211 3553 629 1024 228 16 2 0
VODI 0 863 550 3301 1089 62 6 0
ODI 0 163 78 1666 2943 448 46 0
CDI 0 110 80 836 4876 6823 1382 2
VCDI 0 30 40 433 1656 7005 37452 23728
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 78187 15047 152 175 48 0 1 0
OW 171 3390 639 1103 238 19 1 0
VODI 0 917 522 3196 1106 78 8 0
ODI 0 158 80 1648 2888 425 54 0
CDI 0 114 86 877 4917 6623 1430 48
VCDI 0 33 37 409 1633 7209 37394 23682

Date: 2024-06-08:

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 80244 14100 97 261 48 3 0 0
OW 348 3488 538 934 220 21 0 0
VODI 1 1244 649 2617 871 138 4 0
ODI 0 354 207 1735 2180 504 50 0
CDI 0 244 132 1634 4849 6232 1522 4
VCDI 0 76 79 604 2212 8298 33371 24630
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 80342 14174 124 290 71 6 0 0
OW 250 3341 542 1053 209 15 0 0
VODI 1 1294 627 2532 867 154 11 0
ODI 0 358 191 1847 2087 494 52 0
CDI 0 263 125 1424 4929 6034 1501 8
VCDI 0 76 93 639 2217 8493 33383 24626

Date: 2024-06-10:

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 80720 15763 144 259 40 6 0 0
OW 67 4178 1211 1018 92 12 0 0
VODI 1 469 329 4137 840 48 6 0
ODI 0 142 66 962 3907 349 52 4
CDI 0 65 45 657 3948 9195 799 9
VCDI 0 1 1 23 516 6497 37534 20631
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 80630 14658 151 281 70 19 0 0
OW 157 3273 532 1073 168 25 1 0
VODI 1 1568 553 2215 855 158 31 0
ODI 0 654 318 1764 1922 558 91 3
CDI 0 425 183 1251 4799 6401 2349 8
VCDI 0 40 59 472 1529 8946 35919 20633

Date: 2024-06-12:

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 80728 15632 183 288 36 20 0 0
OW 48 4326 886 1364 155 34 0 0
VODI 0 846 568 3549 874 99 18 1
ODI 0 189 78 1124 3414 699 95 4
CDI 0 146 72 875 4426 8721 2360 18
VCDI 0 0 0 28 654 8857 32757 20571
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 80657 14688 215 325 54 53 0 0
OW 119 3167 482 1294 181 51 0 0
VODI 0 1768 510 2065 995 207 29 0
ODI 0 940 352 1733 1939 591 139 8
CDI 0 573 214 1567 4947 7030 2841 51
VCDI 0 3 14 244 1443 10498 32221 20535

Date: 2024-06-14:

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 81657 15143 161 223 62 14 0 0
OW 127 4216 847 1347 156 43 1 0
VODI 23 1304 544 3077 922 215 17 2
ODI 0 247 108 1359 2956 985 116 8
CDI 0 206 84 911 4723 9108 3100 41
VCDI 0 3 5 101 942 11636 30222 17781
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 81653 13893 145 260 78 35 0 0
OW 141 3208 528 1192 236 75 0 0
VODI 11 2095 479 2016 941 312 26 0
ODI 2 1213 351 1711 1933 821 98 8
CDI 0 684 202 1519 4829 8337 3122 94
VCDI 0 26 44 320 1744 12421 30210 17730


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