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

Validation of sea ice concentration - Full domain

Bulletin date: 2024-06-13

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

Model vs. observations, sea ice class contingency tables

Date: 2024-06-07:

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 64190 14583 121 148 21 1 0 0
OW 914 3730 425 538 132 33 5 0
VODI 2451 1713 705 1797 881 165 24 0
ODI 1102 502 273 1384 1910 712 128 0
CDI 0 555 201 900 4244 5476 1979 0
VCDI 0 369 144 478 1523 8421 42336 15596
...date precedes bulletin

Date: 2024-06-09:

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 66911 12925 87 64 30 18 0 0
OW 986 3583 377 513 157 46 0 0
VODI 2521 1878 621 1507 746 205 64 0
ODI 1025 768 386 1230 1556 693 156 0
CDI 0 810 298 1117 3933 5804 2989 11
VCDI 0 304 119 453 1162 7109 43519 14129
...date precedes bulletin

Date: 2024-06-11:

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 67010 14261 112 74 16 31 0 0
OW 938 4609 654 652 94 35 1 0
VODI 2969 1362 756 2208 1030 164 22 0
ODI 550 373 159 981 2510 1017 105 3
CDI 0 301 193 712 3057 7872 2968 6
VCDI 0 3 16 111 403 7961 39211 15300
...date precedes bulletin

Date: 2024-06-13:

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 67179 14035 112 79 29 18 0 0
OW 1061 4722 602 680 137 63 1 0
VODI 3368 1775 784 1990 931 223 18 0
ODI 0 470 169 1076 2429 1090 162 0
CDI 0 440 191 873 3788 8041 3864 16
VCDI 0 9 18 109 991 9450 39805 10012
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 67176 14112 131 103 38 12 0 0
OW 1065 4705 608 714 141 68 1 0
VODI 3367 1717 754 1947 927 212 17 0
ODI 0 471 186 1042 2372 1113 177 1
CDI 0 437 174 865 3769 8015 3834 10
VCDI 0 9 23 136 1058 9465 39821 10017

Date: 2024-06-15:

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 66851 14594 137 145 37 35 0 0
OW 1002 4661 612 755 178 87 1 0
VODI 3361 1999 665 1749 999 309 44 0
ODI 0 658 263 1068 2258 1252 196 0
CDI 0 479 204 954 3704 8150 3814 22
VCDI 0 39 40 142 1129 15696 32206 10315
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 66847 14727 169 194 53 35 0 0
OW 1006 4671 564 744 199 86 0 0
VODI 3361 1839 684 1709 1010 295 37 0
ODI 0 661 259 1064 2197 1252 200 1
CDI 0 489 196 934 3717 8109 3738 133
VCDI 0 43 49 168 1129 15752 32286 10203

Date: 2024-06-17:

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 67520 15842 238 130 67 2 0 0
OW 1081 5045 774 728 145 21 1 0
VODI 3346 1103 728 2516 1162 86 19 0
ODI 2 250 149 1237 3917 1292 64 0
CDI 0 60 70 464 3304 12367 2057 0
VCDI 0 0 3 103 1514 18505 28360 6538
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 67499 14437 199 148 76 0 0 0
OW 1040 4565 663 775 272 36 14 0
VODI 3389 1834 573 1718 1181 237 68 0
ODI 21 797 256 1177 2261 1115 156 0
CDI 0 641 241 1092 4013 8105 4704 41
VCDI 0 26 30 268 2306 22780 25559 6497

Date: 2024-06-19:

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 68337 15838 210 154 69 23 0 0
OW 1033 4838 741 689 166 48 0 0
VODI 3316 1315 697 2306 1160 260 16 0
ODI 0 244 153 1209 3172 1680 132 0
CDI 0 115 105 546 3796 12160 2945 0
VCDI 0 6 24 168 2391 26204 20963 3581
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 68323 14191 185 171 77 46 0 0
OW 1022 4481 633 705 251 100 0 0
VODI 3341 1986 576 1563 1063 421 21 0
ODI 0 970 257 1144 1835 1352 221 0
CDI 0 684 212 1158 4812 8999 4093 0
VCDI 0 44 67 331 2716 29457 19721 3581

Date: 2024-06-21:

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 68643 16640 228 185 65 31 0 0
OW 1106 4309 719 747 228 75 5 0
VODI 3326 1495 641 1864 1225 349 37 0
ODI 5 396 220 1251 2992 1068 162 0
CDI 0 186 132 686 4947 11982 2878 0
VCDI 0 34 31 328 2425 27541 18493 3135
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 68596 14785 243 181 90 25 0 0
OW 1103 4075 552 698 318 113 2 0
VODI 3374 2114 502 1277 1215 384 40 0
ODI 7 1193 330 1116 1901 1160 279 0
CDI 0 806 264 1301 5474 8542 4260 76
VCDI 0 87 80 488 2884 30822 16994 3059


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