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AKW Model Validation |
Point of contact: NCEP.EMC.wavewatch@NOAA.gov
Last update: October 15, 2004 |
MMAB page | Main wave model page NWW3, AKW or WNA validation page |
This page presents error statistics of the regional AKW wave model and the wind fields driving this model. In set-up and data used it is similar to the validation page of the global model. Details on data used and validation methods can be found on the latter page. Only differences will be discussed here some detail.
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Wind Validation |
Buoy Data |
In the analysis of the buoy data two groups of buoys are considered. The first are the deep ocean data points that are also used in the global NWW3 model. The second group are the coastal buoy locations, that are not present in the global model. The data analysis is similar to that for the global model, resulting in:
Remarks on the above Figures:
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Satellite DataThe validation with the satellite data is performed in the same way as for the global model, with two differences. First, the validation is performed with the altimeter data at native resolution. Secondly, it is collocated on a 0.5O resolution grid. Both differences mean that the comparison includes smaller (meso-) scales in the data. Therefore (i), rms differences and scatter indices against this data may be expected to be larger for identical model wind fields, and (ii) the validation plots will generally be less smooth. |
Comments on Figures in the above Table:
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Wave Model Validation. |
Buoy Data |
The wave data from the buoys is separated into groups and analyzed in the
same way as the wind data.
Comments on above figures:
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Satellite Data |
The validation with the satellite data is performed in the same way as for the global model, with two differences. First, the validation is performed with the altimeter data at native resolution. Secondly, it is collocated on a 0.5o resolution grid. Both differences mean that the comparison includes smaller (meso-) scales in the data. Therefore (i), rms differences and scatter indices against this data may be expected to be larger for identical model wind fields, and (ii) the validation plots will generally be less smooth. |
Comments figures in above Table:
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