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

Validation of sea ice concentration - Asian sector

Bulletin date: 2023-09-21

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

Model vs. observations, sea ice class contingency tables

Date: 2023-09-15:

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 12699 4782 1 0 0 0 0 0
OW 0 1367 184 106 4 0 0 0
VODI 0 286 295 1585 507 12 0 0
ODI 0 8 12 529 5286 940 5 0
CDI 0 0 0 1 698 2767 8 0
VCDI 0 0 0 0 0 0 0 0
...date precedes bulletin

Date: 2023-09-17:

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 12604 4658 3 0 0 0 0 0
OW 0 1446 172 120 12 0 0 0
VODI 0 337 349 1461 483 21 0 0
ODI 0 12 23 566 3809 1399 20 0
CDI 0 0 0 0 827 3709 51 0
VCDI 0 0 0 0 0 0 0 0
...date precedes bulletin

Date: 2023-09-19:

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 12831 4708 14 1 0 0 0 0
OW 0 1128 270 144 4 0 0 0
VODI 0 115 206 1378 334 1 0 0
ODI 0 1 7 264 2734 633 1 0
CDI 0 0 0 7 1634 5152 34 0
VCDI 0 0 0 0 2 460 19 0
...date precedes bulletin

Date: 2023-09-21:

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 13007 4507 22 2 0 0 0 0
OW 0 1203 194 171 13 0 0 0
VODI 0 187 181 913 495 44 0 0
ODI 0 4 24 234 2050 675 0 0
CDI 0 0 0 36 1292 6037 187 0
VCDI 0 0 0 0 6 531 67 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13007 4612 27 14 0 0 0 0
OW 0 1098 186 162 14 0 0 0
VODI 0 181 183 898 592 50 0 0
ODI 0 10 25 234 2005 875 0 0
CDI 0 0 0 48 1212 5165 179 0
VCDI 0 0 0 0 33 1197 75 0

Date: 2023-09-23:

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 13114 4522 20 0 0 0 0 0
OW 0 981 190 253 45 29 3 0
VODI 0 212 144 641 440 266 25 0
ODI 0 29 26 264 1621 592 110 0
CDI 0 0 0 36 429 5386 860 0
VCDI 0 0 0 0 9 827 1008 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13114 4634 31 10 0 0 0 0
OW 0 873 169 250 54 12 1 0
VODI 0 212 150 628 497 283 23 0
ODI 0 25 30 263 1486 693 206 0
CDI 0 0 0 43 502 4688 669 0
VCDI 0 0 0 0 5 1424 1107 0

Date: 2023-09-25:

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 13215 4820 6 2 0 0 0 0
OW 1 1049 132 51 0 0 0 0
VODI 0 188 191 719 141 0 0 0
ODI 0 2 4 344 1780 141 0 0
CDI 0 0 0 3 528 2828 11 0
VCDI 0 0 0 0 5 3584 2337 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13215 4560 10 9 1 0 0 0
OW 1 988 136 147 40 0 0 0
VODI 0 437 139 600 450 220 0 0
ODI 0 72 43 335 1486 685 0 0
CDI 0 2 5 28 477 3554 682 0
VCDI 0 0 0 0 0 2094 1666 0

Date: 2023-09-27:

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 13309 4687 20 5 0 0 0 0
OW 1 1058 140 80 0 0 0 0
VODI 0 201 171 706 223 0 0 0
ODI 0 22 15 323 1761 242 0 0
CDI 0 6 7 84 660 2882 37 0
VCDI 0 0 0 19 228 3794 1401 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 13310 4430 24 14 0 0 0 0
OW 0 1047 116 204 52 2 0 0
VODI 0 473 181 575 708 14 0 0
ODI 0 24 32 405 1721 778 0 0
CDI 0 0 0 19 391 4655 565 0
VCDI 0 0 0 0 0 1469 873 0

Date: 2023-09-29:

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 12628 4920 25 21 4 0 0 0
OW 0 896 230 244 22 5 0 0
VODI 0 152 110 618 340 26 0 0
ODI 0 29 25 196 1420 414 0 0
CDI 0 10 25 92 652 2355 186 0
VCDI 0 0 0 22 223 2801 3391 0
observations
Ice free Ice free
near MIZ
OW VODI ODI CDI VCDI
near MIZ
VCDI
m
o
d
e
l
Ice free 12628 4835 89 71 19 0 0 0
OW 0 806 128 317 184 42 0 0
VODI 0 360 185 467 670 290 0 0
ODI 0 6 13 324 975 961 51 0
CDI 0 0 0 14 813 3443 2120 0
VCDI 0 0 0 0 0 865 1406 0


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