Significant wave height (SWH) conditions observed from satellite
A large negative bias is evident in the SE part
of the model domain. This is due to exposure
to Pacific swell, which is not included in the model.
There are also patches with large errors
inside the Yellow Sea. This may be an artefact,
since near-shore satellite data may be prone to errors.
Average satellite SWH
Histogram of all observations
90% percentile of satellite SWH
Weekly averaged satellite SWH and 90% percentile
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
Scatter index
Histogram of comparisons
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
Temporal error statistics
Bias and stddev have been calculated for weekly averages
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ocean - dmi/coi - 2009-08-05
Ocean og Is - Danmarks Meteorologiske Institut - Sankt Kjelds Plads 11
- 2100 København Ø. Tlf: +45 39 15 75 00 -
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