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: 2025-08-14

Data source: OSI SAF N.H. AMSR 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 6939 6521 28 8 3 0 0 0
OW 2 1896 327 305 26 0 0 0
VODI 0 270 273 1076 448 7 0 0
ODI 0 9 16 364 2514 1248 2 0
CDI 0 0 6 100 2128 6970 569 0
VCDI 0 0 0 0 0 1 26 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 7240 6048 7 3 2 0 0 0
OW 48 2147 271 205 7 0 0 0
VODI 0 444 347 1080 340 18 0 0
ODI 0 24 34 563 2358 1392 170 0
CDI 0 1 22 155 3283 5129 701 0
VCDI 0 0 0 0 0 3 40 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 8041 5493 17 6 0 0 0 0
OW 249 1794 265 231 12 0 0 0
VODI 27 441 306 917 430 76 0 0
ODI 0 38 57 494 2355 1064 15 0
CDI 0 1 19 221 3453 5613 291 0
VCDI 0 0 0 0 0 154 2 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 -14112 0 0 0 0 0 0 0
OW 0 0 -2456 0 0 0 0 0
VODI 0 0 0 -2346 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 -14112 0 0 0 0 0 0 0
OW 0 0 -2456 0 0 0 0 0
VODI 0 0 0 -2346 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 -14140 0 0 0 0 0 0 0
OW 0 0 -2521 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 -14140 0 0 0 0 0 0 0
OW 0 0 -2521 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 -14319 0 0 0 0 0 0 0
OW 0 0 -2603 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 -14319 0 0 0 0 0 0 0
OW 0 0 -2603 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 -14532 0 0 0 0 0 0 0
OW 0 0 -2778 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 -14532 0 0 0 0 0 0 0
OW 0 0 -2778 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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