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Daily Variation of Heat Budget Balance in the Gangjeong-Goryung Reservoir for Summertime - Concerning around the Rate of Heat Storage -

낙동강 강정고령보의 여름철 열수지 일변화 - 열 저장량 변동을 중심으로 -

  • Received : 2015.01.14
  • Accepted : 2015.05.12
  • Published : 2015.06.30

Abstract

Surface heat balance of the Gangjeong-Goryung Reservoir is analyzed for 12-17 August 2013. Each flux elements at the water surface is derived from the special field observations with application of an aerodynamical bulk method for the turbulent heat fluxes and empirical formulae for the radiation heat fluxes. The rate of heat storage in the reservoir is estimated by using estimated by surface heating rate and the vertical water temperature data. The flux divergence of heat transport is estimated as a residual. The features of the surface heat balance are almost decided by the latent heat flux and the solar radiation flux. On average for 12-17 August 2014 in the Gangjeong- Goryung Reservoir, if one defines the insolation at the water surface as 100 %, 94 % is absorbed in the reservoir; thereafter the reservoir loses about 30~50% by sensible heat, latent heat and net long-wave radiation. The residue of 50~80 % raises the water temperature in the reservoir or transported away by the river flow during the daytime.

Keywords

Heat balance;Heat storage;Heat transport;Sensible heat;Latent heat

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Cited by

  1. Seasonal Variation of Water Temperature Before and After Weir Construction Using Satellite Image in the Nakdong River vol.24, pp.11, 2015, https://doi.org/10.5322/JESI.2015.24.11.1417
  2. Spatiotemporal and Longitudinal Variability of Hydro-meteorology, Basic Water Quality and Dominant Algal Assemblages in the Eight Weir Pools of Regulated River (Nakdong) vol.51, pp.4, 2018, https://doi.org/10.11614/KSL.2018.51.4.268

Acknowledgement

Grant : 응용기상기술개발연구