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: 2022-09-29

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

Model vs. observations, sea ice class contingency tables

Date: 2022-09-23:

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 123577 17766 1125 808 180 21 2 0
OW 2 1238 592 936 321 24 0 0
VODI 0 226 262 1203 1022 214 0 0
ODI 0 11 53 433 1093 722 27 0
CDI 0 0 5 146 574 3268 911 0
VCDI 0 5 2 111 363 9699 19257 849
...date precedes bulletin

Date: 2022-09-25:

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 120841 18285 1491 1025 140 19 0 0
OW 1 1698 566 953 507 123 0 0
VODI 0 422 227 923 1151 264 3 0
ODI 0 91 86 333 1185 704 34 0
CDI 0 24 47 166 706 2289 613 0
VCDI 0 9 7 95 447 13431 18129 13
...date precedes bulletin

Date: 2022-09-27:

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 123332 17654 1018 768 341 44 0 0
OW 0 475 536 764 421 92 3 0
VODI 0 129 179 724 1039 295 7 0
ODI 0 21 32 232 1178 776 16 0
CDI 0 13 15 82 641 3130 771 0
VCDI 0 2 0 3 170 13046 18500 599
...date precedes bulletin

Date: 2022-09-29:

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 120512 19249 921 733 237 71 0 0
OW 4 783 539 993 503 86 0 0
VODI 0 132 189 652 1209 314 4 0
ODI 0 49 37 216 1049 669 39 0
CDI 0 25 38 114 854 2300 948 0
VCDI 0 0 2 8 268 11163 22040 98
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 120516 19429 1115 1007 308 70 0 0
OW 0 575 361 739 508 111 1 0
VODI 0 149 179 674 1192 394 4 0
ODI 0 49 30 183 1002 659 36 0
CDI 0 34 35 101 831 2106 855 0
VCDI 0 2 6 12 279 11263 22135 98

Date: 2022-10-01:

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 117997 20684 956 636 223 2 0 0
OW 9 1136 564 991 567 38 0 0
VODI 0 158 255 755 1168 312 7 0
ODI 0 22 71 295 974 719 44 0
CDI 0 3 20 180 649 2032 577 0
VCDI 0 0 0 27 223 10058 24670 26
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 118004 20873 1134 883 247 7 0 0
OW 2 869 381 766 600 65 0 0
VODI 0 226 258 782 1255 329 15 0
ODI 0 29 63 244 785 785 53 0
CDI 0 6 27 166 636 1788 617 0
VCDI 0 0 3 43 281 10187 24613 26

Date: 2022-10-03:

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 115339 23036 1167 691 80 7 0 0
OW 5 503 488 703 221 7 0 0
VODI 0 122 241 978 896 51 11 0
ODI 0 20 48 259 1972 465 33 0
CDI 0 16 22 82 714 2720 347 0
VCDI 0 0 0 7 72 8338 26834 553
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 115334 22457 1214 820 170 8 0 0
OW 10 806 352 751 709 46 0 0
VODI 0 330 251 671 1319 335 2 0
ODI 0 59 76 281 852 855 31 0
CDI 0 37 51 137 648 1549 659 0
VCDI 0 8 22 60 257 8795 26533 553

Date: 2022-10-05:

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 114037 22899 1666 847 174 3 0 0
OW 21 620 402 784 401 28 0 0
VODI 0 150 232 692 1022 204 0 0
ODI 0 26 56 292 1156 798 2 0
CDI 0 10 32 175 968 2086 139 0
VCDI 0 0 0 20 246 10916 23531 2413
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 114044 22011 1521 918 316 46 0 0
OW 14 1219 386 626 574 184 1 0
VODI 0 345 321 617 1142 535 13 0
ODI 0 76 87 338 820 920 43 0
CDI 0 45 52 182 707 1583 345 0
VCDI 0 9 21 129 408 10767 23270 2413

Date: 2022-10-07:

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 116637 19879 1353 372 113 14 0 0
OW 84 1145 595 746 174 0 0 0
VODI 0 198 321 1152 726 97 2 0
ODI 0 43 78 637 1065 260 30 0
CDI 0 23 54 306 1339 1113 181 0
VCDI 0 0 4 117 1391 13424 21706 1669
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 116701 18882 1355 537 240 49 2 0
OW 20 1634 406 704 268 114 11 0
VODI 0 570 399 1080 880 256 62 0
ODI 0 148 121 460 931 506 105 0
CDI 0 48 89 309 1054 967 245 0
VCDI 0 6 35 240 1435 13016 21494 1669


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