Modelled wave height vs. satellite altimetry
North Sea-Baltic Sea
2009_07-12
English version

Average SWH conditions 
Scatter plot 
Error in 2 dimensions 
Error vs. forecast length 
Error vs. waveheight 
Temporal error statistics 
Information on the satellite observations  


Significant wave height (SWH) conditions observed from satellite

Average satellite SWH

Histogram of all observations

2009_07-12 statistics 2009_07-12 statistics

90% percentile of satellite SWH

Maximum satellite SWH

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Weekly averaged satellite SWH and 90% percentile

2009_07-12 statistics

Scatter plot and mean errors

All pairs of WAM (0-6 hour) and satellite observations have been used.
The number of observations in each 5x5 cm box is shown with colors. The red line represents the best fit to the data whereas the green dashed line represents a one to one relationship.


Errors in 2 dimensions

Average error statistics have been calculated over 100 km bins, to provide enough observations to obtain reliable 2D error estimates

Bias (WAM - altimetry)

Stddev

2009_07-12 statistics 2009_07-12 statistics

Scatter index

2009_07-12 statistics

Histogram of comparisons

2009_07-12 statistics

Error statistics vs. forecast length  

Bias and standard deviations have been calculated over the whole domain, for every  hour of WAM forecast, up to 60 hours

Error statistics vs. wave height  

The bin size is 1 meter
2009_07-12 statistics 2009_07-12 statistics

Temporal error statistics

Bias and stddev have been calculated for weekly averages
2009_07-12 statistics
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ocean - dmi/coi - 2011-01-13