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Validation of Drifting Buoy Data for Ocean Wave Observation
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Drifting buoys collect wave data in the open ocean far from land and in areas with strong currents. However, the validation of the drifting buoy wave data is limited. Here, we compared the drifting buoy wave data, ERA5 wave data, and moored GPS buoy wave data. Data from 2009 to 2018 near the coast of Japan were used. The agreement of the drifting buoy-observed wave parameters with the moored GPS buoy-observed wave parameters is better than that of ERA5 wave parameters, which is statistically significant. In particular, the accuracy of the ERA5 wave heights tends to be lower where the ocean currents are fast. On the other hand, the agreement between the drifting buoy-observed wave heights and the moored GPS buoy-observed wave heights was good even in the areas with strong currents. It is confirmed that the drifting buoy wave data can be used as reference data for wave modeling study.
Title: Validation of Drifting Buoy Data for Ocean Wave Observation
Description:
Drifting buoys collect wave data in the open ocean far from land and in areas with strong currents.
However, the validation of the drifting buoy wave data is limited.
Here, we compared the drifting buoy wave data, ERA5 wave data, and moored GPS buoy wave data.
Data from 2009 to 2018 near the coast of Japan were used.
The agreement of the drifting buoy-observed wave parameters with the moored GPS buoy-observed wave parameters is better than that of ERA5 wave parameters, which is statistically significant.
In particular, the accuracy of the ERA5 wave heights tends to be lower where the ocean currents are fast.
On the other hand, the agreement between the drifting buoy-observed wave heights and the moored GPS buoy-observed wave heights was good even in the areas with strong currents.
It is confirmed that the drifting buoy wave data can be used as reference data for wave modeling study.
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