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http://dx.doi.org/10.5467/JKESS.2019.40.3.259

An Application of Statistical Downscaling Method for Construction of High-Resolution Coastal Wave Prediction System in East Sea  

Jee, Joon-Bum (Research Center for Atmospheric Environment, Hankuk University of Foreign Studies)
Zo, Il-Sung (Research Institute for Radiation-Satellite, Gangneung-Wonju National University)
Lee, Kyu-Tae (Research Institute for Radiation-Satellite, Gangneung-Wonju National University)
Lee, Won-Hak (Research Institute for Gangwon)
Publication Information
Journal of the Korean earth science society / v.40, no.3, 2019 , pp. 259-271 More about this Journal
Abstract
A statistical downscaling method was adopted in order to establish the high-resolution wave prediction system in the East Sea coastal area. This system used forecast data from the Global Wave Watch (GWW) model, and the East Sea and Busan Coastal Wave Watch (CWW) model operated by the Korea Meteorological Administration (KMA). We used the CWW forecast data until three days and the GWW forecast data from three to seven days to implement the statistical downscaling method (inverse distance weight interpolation and conditional merge). The two-dimensional and station wave heights as well as sea surface wind speed from the high-resolution coastal prediction system were verified with statistical analysis, using an initial analysis field and oceanic observation with buoys carried out by the KMA and the Korea Hydrographic and Oceanographic Agency (KHOA). Similar to the predictive performance of the GWW and the CWW data, the system has a high predictive performance at the initial stages that decreased gradually with forecast time. As a result, during the entire prediction period, the correlation coefficient and root mean square error of the predicted wave heights improved from 0.46 and 0.34 m to 0.6 and 0.28 m before and after applying the statistical downscaling method.
Keywords
Wave watch; Wave height; Downscaling; Conditional Merge; Inverse distance weight; East Coast;
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Times Cited By KSCI : 5  (Citation Analysis)
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