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KMID : 1024520000090020109
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Journal of the Environmental Sciences
2000 Volume.9 No. 2 p.109 ~ p.114
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Estimation of Daytime Sensible Heat Flux using Routine Meteorological Data
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Lee Chong-Bum
Kim Yong-Goog
Park Chol-Yong
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Abstract
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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.
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KEYWORD
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sensible heat flux, routine meteorological data, 3-D sonic anemometer-thermometer
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