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

Validation of sea ice concentration - American sector

Bulletin date: 2021-04-15

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

Model vs. observations, sea ice class contingency tables

Date: 2021-04-09:

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 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 2 0 0 0
ODI 0 0 0 0 28 11 1 0
CDI 0 0 0 0 110 214 41 5
VCDI 0 0 0 5 319 1443 5693 37994
...date precedes bulletin

Date: 2021-04-11:

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 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 3 0 0 0
ODI 0 0 0 0 32 11 3 0
CDI 0 0 0 4 153 182 105 0
VCDI 0 0 0 14 509 2630 7882 34338
...date precedes bulletin

Date: 2021-04-13:

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 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 3 4 0 0
ODI 0 0 0 0 68 37 33 5
CDI 0 0 0 14 187 480 409 32
VCDI 0 0 0 0 215 2743 6858 34778
...date precedes bulletin

Date: 2021-04-15:

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 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 21 5 0 0
ODI 0 0 0 0 63 70 8 0
CDI 0 0 0 0 173 355 187 1
VCDI 0 0 0 2 387 2726 7584 34284
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 17 0 0 0
ODI 0 0 0 0 66 64 6 0
CDI 0 0 0 0 172 394 199 6
VCDI 0 0 0 2 389 2698 7574 34279

Date: 2021-04-17:

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 0 0 0 0 0 0 0 0
OW 0 0 0 0 5 0 0 0
VODI 0 0 0 7 25 12 1 0
ODI 0 0 0 8 53 48 15 0
CDI 0 0 0 5 158 334 152 18
VCDI 0 0 0 2 320 2139 11422 31142
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 5 0 0 0
VODI 0 0 0 6 18 8 0 0
ODI 0 0 0 9 51 38 13 0
CDI 0 0 0 5 168 402 165 37
VCDI 0 0 0 2 319 2085 11412 31123

Date: 2021-04-19:

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 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 51 5 9 0
ODI 0 0 0 0 124 26 14 0
CDI 0 0 0 0 384 481 70 8
VCDI 0 0 0 1 280 2928 10175 31310
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 1 6 0
VODI 0 0 0 0 24 3 19 0
ODI 0 0 0 0 86 32 22 0
CDI 0 0 0 0 285 383 143 65
VCDI 0 0 0 1 444 3021 10078 31253

Date: 2021-04-21:

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 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 33 0 4 0
ODI 0 0 0 0 66 4 16 0
CDI 0 0 0 0 376 350 149 0
VCDI 0 0 0 0 334 1825 13372 29337
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 1 0 0 0
VODI 0 0 0 0 5 0 18 0
ODI 0 0 0 0 46 9 22 0
CDI 0 0 0 0 274 197 217 20
VCDI 0 0 0 0 483 1973 13284 29317

Date: 2021-04-23:

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 0 0 0 0 0 0 0 0
OW 0 0 0 0 5 0 0 0
VODI 0 0 0 0 28 0 15 0
ODI 0 0 0 0 75 11 27 0
CDI 0 0 0 0 219 336 250 8
VCDI 0 0 0 0 395 2460 9054 32983
observations
Ice free Ice free
near MIZ		 OW VODI ODI CDI VCDI
near MIZ		 VCDI
m
o
d
e
l		 Ice free 0 0 0 0 0 0 0 0
OW 0 0 0 0 0 0 0 0
VODI 0 0 0 0 1 0 11 0
ODI 0 0 0 0 27 4 20 0
CDI 0 0 0 0 142 197 225 11
VCDI 0 0 0 0 552 2606 9090 32980


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