Estimation of Daytime Sensible Heat Flux using Routine Meteorological Data

정규기상관측자료를 이용한 주간의 현열 플럭스 추정

  • 이종범 (강원대학교 환경학과) ;
  • 김용국 (강원대학교 환경학과) ;
  • 박철용 (강원대학교 환경학과)
  • Published : 2000.04.01

Abstract

The purpose of the present study is to develope the estimation scheme for sensible heat flux by semi-empirical approach using routine meteorological data such as solar radiation and air temperature. To compare observed sensible heat flux with estimated sensible heat flux, the sensible heat fluxes were measured by three dimensional sonic anemometer-thermometer. The field observation was performed during 1 year from December 1, 1995 to November 30, 1996 on a rice paddy field in Chunchon basin. The heat fluxes were measured at a heights of 5m and mean meteorological variables were obtained at two levels, 2.5m(or 1.5m) and 10m. Since condition of rice paddy field such as, wetness of the field, roughness length, vary widely, we devided annual data to 5 periods. Comparing with two sensible heat fluxes, the results showed that the correlation coefficients were more than 0.86. Thus, we can conclude that the estimation method of sensible heat fluxes using routine meteorological data is practical and reliable enough.

Keywords

sensible heat flux;routine meteorological data;3-D sonic anemometer-thermometer

References

  1. Modeling and climatological aspects of convective boundary layer Lee, C. B.
  2. J. Appl. Meteor. v.18 The Priestley-Taylor evaporation model applied to a large shallow lake in the Nehterlands De Bruin, H. A.;J. Q. Keijman
  3. JAPCA v.38 An quality model evaluation and uncertainty Hanna, S. R.
  4. J. Appl. Meteor. v.16 Parameterization of surface evaporation rate for use in numerical modeling Yu, T. W.
  5. J. Clim. Appl Meteor. v.7 A simple scheme for daytime estimates of the surface fluxes from routine weather data Holtslag, A. A. M.;A. P. Van Ulden
  6. J. Appl Meteor. v.21 A simple parameterization of the surface fluxes of sensible and latent heat during daytime compared with the Penman-Monteith concept De Bruin, H. A.;A. A. M. Holtslag
  7. Mon. Wea. Rev. v.106 On the assessment of surface heat flux and evaporation using large-scale parameters Priestley, C. H.;R. J. Taylor