Characteristics of Diurnal Variation of Wind over the South Korean

우리 나라의 바람 일변동 특성

  • 송봉근 (부경대학교 환경대기과학과) ;
  • 김영섭 (부경대학교 환경대기과학과) ;
  • 이동인 (부경대학교 환경대기과학과) ;
  • 한영호 (부경대학교 환경대기과학과)
  • Published : 2000.12.01

Abstract

The purpose of this study is to find out the temporal and spatial characteristics of the diurnal wind variation between coastal and inland areas using the hourly wind data of 58 AWS-stations in the South Korea which are collected during the 10 years from 1980. Diurnal variation is investigated by using the Fast Fourier Transform(FFT), and the wind direction in investigated by comparing C(sub)r with C(sub)v represented the constancy of wind. For the scalar wind speed, the maximum wind speed occurs in the daytime 14h to 16h. The maximum diurnal amplitude at coastal areas occurs from 12h to 16h, and is about 2 hours faster than that at inland areas. Vector mean wind speed is strong at coastal areas and Chupungnyong, Kumi, Taegu of inland areas. The diurnal variation ellipses make a right angle with coastline show that the land and sea breezes are prevailing. The constancy of wind is strong at all observations in January. In the relationship between $C_r and C_v, C_v is higher than C_r$.

Keywords

References

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