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: 2021-09-23

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

Model vs. observations, sea ice class contingency tables

Date: 2021-09-17:

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 125254 18031 159 730 126 0 0 0
OW 0 1798 195 1498 234 0 0 0
VODI 0 327 80 2179 1359 30 0 0
ODI 0 74 9 328 1948 484 7 2
CDI 0 29 0 22 826 4444 903 97
VCDI 0 0 0 0 20 6481 14394 4980
...date precedes bulletin

Date: 2021-09-19:

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 125623 16924 159 783 116 0 0 0
OW 0 1910 176 1742 253 0 0 0
VODI 0 377 97 1879 1570 30 2 0
ODI 0 121 10 310 1943 480 21 0
CDI 0 28 1 28 870 3719 866 7
VCDI 0 0 0 4 78 7242 14256 5423
...date precedes bulletin

Date: 2021-09-21:

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 123908 19126 212 833 55 0 0 0
OW 0 1075 188 1571 173 0 0 0
VODI 0 284 65 2408 1125 4 0 0
ODI 0 135 8 226 2442 144 13 0
CDI 0 0 0 26 1068 4166 260 0
VCDI 0 0 0 0 26 8222 16394 2891
...date precedes bulletin

Date: 2021-09-23:

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 123885 18350 178 688 31 0 0 0
OW 0 1189 168 1865 194 0 0 0
VODI 0 372 72 2373 1168 4 0 0
ODI 0 148 16 423 2014 185 4 0
CDI 0 1 1 58 1090 2926 181 1
VCDI 0 0 0 2 196 9536 17813 1916
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 123885 18550 208 1008 47 0 0 0
OW 0 964 133 1499 201 0 0 0
VODI 0 395 78 2349 1273 6 0 0
ODI 0 150 14 495 1983 400 6 0
CDI 0 1 2 50 983 2663 200 1
VCDI 0 0 0 8 206 9582 17792 1916

Date: 2021-09-25:

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 122358 19045 188 729 124 0 0 0
OW 0 1174 131 1370 674 58 0 0
VODI 0 439 56 983 2411 305 0 0
ODI 0 111 15 353 1613 651 2 0
CDI 0 8 7 113 869 2021 638 24
VCDI 0 0 0 14 208 4910 15650 9796
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 122358 19391 212 949 218 0 0 0
OW 0 828 100 1043 618 28 0 0
VODI 0 439 63 1085 2374 310 0 0
ODI 0 110 16 347 1621 893 31 0
CDI 0 9 4 113 853 1685 720 51
VCDI 0 0 2 25 215 5029 15539 9769

Date: 2021-09-27:

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 121012 20519 176 518 42 0 0 0
OW 0 827 137 927 119 1 0 0
VODI 0 212 48 1249 1054 14 0 0
ODI 0 27 3 213 4259 398 0 0
CDI 0 10 8 67 781 3379 284 16
VCDI 0 0 0 0 133 6447 15629 8539
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 121012 19871 197 998 178 0 0 0
OW 0 984 81 724 638 21 0 0
VODI 0 475 58 698 2628 378 0 0
ODI 0 190 16 285 1754 957 0 0
CDI 0 56 12 224 726 2076 408 33
VCDI 0 19 8 45 464 6807 15505 8522

Date: 2021-09-29:

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 120169 20368 205 837 70 0 0 0
OW 0 835 104 1051 267 6 0 0
VODI 0 255 49 849 1258 79 1 0
ODI 0 56 17 248 2604 1475 12 0
CDI 0 22 9 121 817 2811 632 12
VCDI 0 0 0 23 283 3980 16546 10977
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 120169 19750 200 1088 184 2 0 0
OW 0 967 75 788 634 12 0 0
VODI 0 481 56 672 1942 818 57 0
ODI 0 224 24 269 1205 1372 189 0
CDI 0 85 19 230 749 1959 641 21
VCDI 0 29 10 82 585 4188 16304 10968

Date: 2021-10-01:

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 120191 18900 179 758 249 0 0 0
OW 0 1236 104 877 506 76 0 0
VODI 0 273 59 736 1078 322 0 0
ODI 0 64 14 206 1211 2145 26 0
CDI 0 28 13 107 703 3168 943 15
VCDI 0 8 3 65 394 4418 16193 11780
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 120173 18577 182 1008 535 85 0 0
OW 18 1078 80 564 664 237 0 0
VODI 0 483 56 553 940 1779 178 0
ODI 0 202 17 290 652 1781 501 0
CDI 0 126 18 160 677 1382 941 9
VCDI 0 43 19 174 673 4865 15542 11786


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