Improvement of a wind map over the Korean Peninsula based on mesoscale model WRF

Wind map in South Korea was established to provide accurate and detailed wind resource based on numerical model WRF in the previous study. Although the bottom boundary conditions such as 100-m resolution topography and 30-m resolution land-use data were improved into the WRF model, local meteorological impact is not considered. In order to ingest regional observations, WRF-FDDA (Four-Dimensional Data Assimilation) is conducted with a surface and upper observation. The simulations are performed on a nested grid from 27-km down to 1-km horizontal resolution. Spatial distribution of mean wind speed shows wind energy potential at its peak in mountainous region and southern coastal region of South Korea. Seasonal variation of wind speed indicates that wind is strongest during the spring and winter seasons. General characteristics of wind speed similar to the simulated results without FDDA. But the overestimation tendency of wind speed decreased by WRF-FDDA. The performance and wind characteristics of the wind fields in the surface layer simulated by WRF-FDDA would be presented in the conference. We have developed wind map over North Korea to provide wind information over whole region of the Korean Peninsula. North Korea wind map is developed by WRF model with a 1-km topography and MODIS land-use. Wind fields are simulated for one year representing mean characteristics of an 11-year period from year 1998 to year 2008. Mean wind speed shows peak in mountainous region and western coastal region. The simulation wind speed at 10-m above ground level is verified with 27 surface observations. Wind speed simulated in North Korea overestimates than the observation. General characteristics of wind map over North Korea will be introduced in the conference. The results of wind mapping study over South and North Korea help identify locations of with highest wind energy potential in the Korean Peninsula.