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Sea state and ocean surface meteorological in-situ observations are routinely collected by several national organisations via networks of moored buoys or weather ships and fixed platforms deployed in their near-shore and offshore areas of interest. The data are usually exchanged via the GTS. As part of this intercomparisoninter comparison, observations that are not commonly available on the GTS are also gathered on a case-by-case basis.Before using
The processing of the in-situ data is twofold. First, data for those sites reporting twice or more per hour are averaged after a basic quality control to produce an hourly data set. This hourly data set is then combined with other locations which are only reporting every hour. This hourly dataset is made available to the participants
Second, before using these hourly observations for verification, care has to be taken to process the data to remove any erroneous observations. Moreover, extra care has to be taken to match the scale of both model and observations. This scale matching is achieved by averaging the hourly data in ±1 hour time windows centered on the four major synoptic times corresponding
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. The original quality control and averaging procedure was discussed in Bidlot et al. (2002). It was extended to include platform data as described in Sætra and Bidlot (2004).
Match-up between observations and the model data
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