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

Validation of sea ice concentration - Asian sector

Bulletin date: 2025-08-14

Data source: OSI SAF N.H. multi-product sea ice concentration

Model vs. observations, sea ice class contingency tables

Date: 2025-08-08:

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 7769 6454 29 11 0 0 0 0
OW 62 1881 339 446 1 0 0 0
VODI 0 184 146 1412 406 0 0 0
ODI 0 0 6 245 3011 894 0 0
CDI 0 0 0 0 1645 7986 142 0
VCDI 0 0 0 0 0 9 18 0
...date precedes bulletin

Date: 2025-08-10:

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 8390 5663 6 7 0 0 0 0
OW 203 2094 298 249 1 0 0 0
VODI 2 262 240 1523 283 0 0 0
ODI 0 8 12 479 2769 1263 10 0
CDI 0 0 0 44 4016 4665 566 0
VCDI 0 0 0 0 0 0 43 0
...date precedes bulletin

Date: 2025-08-12:

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 9751 4588 29 6 0 0 0 0
OW 517 1543 267 355 10 0 0 0
VODI 68 315 182 1266 406 15 0 0
ODI 0 15 13 442 2740 814 0 0
CDI 0 0 0 64 3674 5735 125 0
VCDI 0 0 0 0 0 156 0 0
...date precedes bulletin

Date: 2025-08-14:

Best estimate Forecast
...observations not yet available ...observations not yet available

Date: 2025-08-16:

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 -14972 0 0 0 0 0 0 0
OW 0 0 -2608 0 0 0 0 0
VODI 0 0 0 -2348 0 0 0 0
ODI 0 0 0 0 -6134 0 0 0
CDI 0 0 0 0 0 -7034 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free -14972 0 0 0 0 0 0 0
OW 0 0 -2608 0 0 0 0 0
VODI 0 0 0 -2348 0 0 0 0
ODI 0 0 0 0 -6134 0 0 0
CDI 0 0 0 0 0 -7034 0 0
VCDI 0 0 0 0 0 0 0 0

Date: 2025-08-18:

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 -15024 0 0 0 0 0 0 0
OW 0 0 -2651 0 0 0 0 0
VODI 0 0 0 -2562 0 0 0 0
ODI 0 0 0 0 -6519 0 0 0
CDI 0 0 0 0 0 -6340 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free -15024 0 0 0 0 0 0 0
OW 0 0 -2651 0 0 0 0 0
VODI 0 0 0 -2562 0 0 0 0
ODI 0 0 0 0 -6519 0 0 0
CDI 0 0 0 0 0 -6340 0 0
VCDI 0 0 0 0 0 0 0 0

Date: 2025-08-20:

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 -15220 0 0 0 0 0 0 0
OW 0 0 -2716 0 0 0 0 0
VODI 0 0 0 -2701 0 0 0 0
ODI 0 0 0 0 -6073 0 0 0
CDI 0 0 0 0 0 -6386 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free -15220 0 0 0 0 0 0 0
OW 0 0 -2716 0 0 0 0 0
VODI 0 0 0 -2701 0 0 0 0
ODI 0 0 0 0 -6073 0 0 0
CDI 0 0 0 0 0 -6386 0 0
VCDI 0 0 0 0 0 0 0 0

Date: 2025-08-22:

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 -15428 0 0 0 0 0 0 0
OW 0 0 -2896 0 0 0 0 0
VODI 0 0 0 -2774 0 0 0 0
ODI 0 0 0 0 -5369 0 0 0
CDI 0 0 0 0 0 -6629 0 0
VCDI 0 0 0 0 0 0 0 0
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free -15428 0 0 0 0 0 0 0
OW 0 0 -2896 0 0 0 0 0
VODI 0 0 0 -2774 0 0 0 0
ODI 0 0 0 0 -5369 0 0 0
CDI 0 0 0 0 0 -6629 0 0
VCDI 0 0 0 0 0 0 0 0


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