Journal of Environmental Science International (한국환경과학회지)

The Korean Environmental Sciences Society (한국환경과학회)
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Characteristic of the Nocturnal Inversion Layer observed by Tethersonde in Daegu

계류기구로 관측한 대구시 야간 안정층 특성에 관한 사례연구

  • 김희종 (경북대학교 자연과학대학 천문대기과학과) ;
  • 윤일희 (경북대학교 사범대학 지구과학교육과) ;
  • 권병혁 (알라고아스대학교 기상학과) ;
  • 허만천 (대구지방환경청 측정분석과)
  • Published : 2002.03.01
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Abstract

Using measured data at Daegu by tethersonde for the period of 1984∼1987, we have investigated the lower atmospheric boundary layer structure including relationships between inversion layer and meteorological factors(wind and temperature), and the inversion strength and inversion height. The inversion layer was defined from the vertical temperature profile and its strength was analyzed with the wind shear as well as the vertical temperature gradient. From October to January, measured inversion layer isn't destroyed, however, in June, after sun rise, it is destroyed by surface heating and mixed layer is developed from surface. According to Pasquill stability classes, the moderately stable cases dominated. It's the larger vertical temperature gradient the lower SBL height. We have introduced B(bulk turbulence scale) which indicated SBL height. It's larger B, the higher SBL height and vice versa. It was noted that the bulk turbulence scale (B) is appropriate to determine the stable boundary layer height.

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References

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