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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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Understanding snowmelt movement to the watershed is crucial for both climate change and hydrological studies because the snowmelt is a significant component of groundwater and surface runoff in temperature area. In this work, a new energy balance budget algorithm has been developed for melting snow from a snowpack at the Central Sierra Snow Laboratory (CSSL) in California, US. Using two sets of experiments, artificial rain-on-snow experiments and observations of diel variations, carried out in the winter of 2002 and 2003, we investigate how to calculate the amount of snowmelt from the snowpack using radiation energy and air temperature. To address the effect of air temperature, we calculate the integrated daily solar radiation energy input, and the integrated discharge of snowmelt under the snowpack and the energy required to generate such an amount of meltwater. The difference between the two is the excess (or deficit) energy input and we compare this energy to the average daily temperature. The resulting empirical relationship is used to calculate the instantaneous snowmelt rate in the model used by Lee et al. (2008a; 2010), in addition to the net-short radiation. If for a given 10 minute interval, the energy obtained by the melt calculation is negative, then no melt is generated. The input energy from the sun is considered to be used to increase the temperature of the snowpack. Positive energy is used for melting snow for the 10-minute interval. Using this energy budget algorithm, we optimize the intrinsic permeability of the snowpack for the two sets of experiments using one-dimensional water percolation model, which are $52.5{\times}10^{-10}m^2$ and $75{\times}10^{-10}m^2$ for the artificial rain-on-snow experiments and observations of diel variation, respectively.
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참고문헌 (17)
참고문헌 신청
박영윤 / 2010 / 동토지역의 지하수연구 고찰 / 지질학회지 46(4):429~437
염종민 / 2009 / 적설역에서 나타나는 적외 휘도온도와 반사도 특성 / 대한원격탐사학회지 25(2):193~203
Alexander, P. / 2011 / Modeled surface air temperature response to snow depth variability / J. Geophys. Res 116:14105
Bales, R.C. / 1989 / Ion elution through shallow homogeneous snow / Water Resour. Res 25:1869~1877
Colbeck, S.C. / 1972 / A theory of water percolation in snow / J. Glaciol 11:369~385
염종민 / 2009 / 적설역에서 나타나는 적외 휘도온도와 반사도 특성 / 대한원격탐사학회지 25(2):193~203
Alexander, P. / 2011 / Modeled surface air temperature response to snow depth variability / J. Geophys. Res 116:14105
Bales, R.C. / 1989 / Ion elution through shallow homogeneous snow / Water Resour. Res 25:1869~1877
Colbeck, S.C. / 1972 / A theory of water percolation in snow / J. Glaciol 11:369~385
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