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: 2024-08-29

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

Model vs. observations, sea ice class contingency tables

Date: 2024-08-23:

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 117029 10646 82 58 0 0 0 0
OW 2854 4934 848 440 17 0 0 0
VODI 1107 1199 1380 5149 837 32 0 0
ODI 20 42 50 1495 12369 3146 20 0
CDI 4 5 1 35 2069 9988 484 0
VCDI 0 26 3 11 39 1710 2681 0
...date precedes bulletin

Date: 2024-08-25:

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 117930 9955 69 19 0 0 0 0
OW 3029 4911 802 472 25 1 0 0
VODI 1065 1695 1442 4510 755 72 15 0
ODI 23 49 44 1948 12026 3594 83 0
CDI 1 19 0 48 1398 8891 1294 0
VCDI 0 11 0 14 44 1262 3294 0
...date precedes bulletin

Date: 2024-08-27:

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 116633 13654 128 68 0 0 0 0
OW 3029 5078 1240 505 6 0 0 0
VODI 944 516 939 4402 590 12 0 0
ODI 8 5 20 1394 10975 2047 28 0
CDI 0 21 2 25 2324 10699 1233 0
VCDI 0 7 0 5 17 899 3357 0
...date precedes bulletin

Date: 2024-08-29:

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 118821 12042 63 16 0 0 0 0
OW 3053 5418 882 406 8 0 0 0
VODI 904 784 972 4049 615 18 1 0
ODI 4 52 35 1987 11018 1583 29 0
CDI 0 15 12 48 2522 10168 996 0
VCDI 0 20 1 15 30 861 3362 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 118795 12337 71 25 0 0 0 0
OW 3076 5067 866 439 12 0 0 0
VODI 910 841 976 3902 780 21 0 0
ODI 1 51 39 2083 10614 1708 17 0
CDI 0 16 12 56 2754 10039 1069 0
VCDI 0 19 1 16 33 862 3302 0

Date: 2024-08-31:

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 118831 12339 45 40 3 0 0 0
OW 3088 5376 767 444 3 0 0 0
VODI 861 938 986 3879 551 23 0 0
ODI 1 57 43 2259 11034 1666 36 0
CDI 0 24 9 49 2071 10015 940 0
VCDI 0 10 1 13 43 996 3369 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 118800 12659 66 48 3 0 0 0
OW 3121 4960 758 506 3 0 0 0
VODI 859 1041 966 3713 811 34 0 0
ODI 1 55 51 2351 10470 1677 28 0
CDI 0 23 9 54 2368 9905 974 0
VCDI 0 6 1 12 50 1084 3343 0

Date: 2024-09-02:

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 119876 13668 85 25 0 0 0 0
OW 3158 4058 1045 556 7 0 0 0
VODI 663 297 547 4203 633 4 0 0
ODI 0 4 13 1877 12303 1944 3 0
CDI 0 21 6 17 1477 9522 748 0
VCDI 0 5 0 6 18 460 3561 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 119744 11513 59 15 0 0 0 0
OW 3127 5250 618 480 60 1 0 0
VODI 826 1187 946 3561 957 19 0 0
ODI 0 72 62 2565 10202 1757 4 0
CDI 0 22 11 51 3163 9381 687 0
VCDI 0 9 0 12 56 772 3621 0

Date: 2024-09-04:

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 113775 12141 7451 163 0 0 0 0
OW 3232 3561 1115 836 17 0 0 0
VODI 674 461 972 3782 678 2 1 0
ODI 0 9 673 3577 9665 1972 4 0
CDI 0 24 214 1153 2262 7176 1102 0
VCDI 0 4 0 5 112 849 3138 10
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 113605 10507 7037 28 1 0 0 0
OW 3244 4414 1165 798 16 1 2 0
VODI 832 1175 1265 3264 948 36 1 0
ODI 0 74 608 3842 8666 1463 7 0
CDI 0 13 350 1564 2945 7478 1302 0
VCDI 0 17 0 20 158 1021 2933 10

Date: 2024-09-06:

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 120784 12976 74 31 0 0 0 0
OW 3091 4141 732 466 52 8 0 0
VODI 752 610 702 3189 1067 21 0 0
ODI 0 17 23 866 9473 4516 33 0
CDI 0 20 2 54 1223 9878 1357 0
VCDI 0 9 0 7 12 1623 3001 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 120580 10801 76 33 7 0 0 0
OW 3267 5238 632 548 56 8 0 0
VODI 780 1635 732 2764 1246 55 1 0
ODI 0 66 91 1122 8251 3588 5 0
CDI 0 14 2 116 2210 10705 1507 0
VCDI 0 19 0 30 57 1690 2878 0


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