Turbulent fluxes above the snow surface
Turbulent fluxes above the snow surface
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DOI：
10.3189/1998aog26-1-179-183
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发表时间：
1998
影响因子：
2.9
通讯作者：
E. Martin;Y. Lejeune
中科院分区：
文献类型：
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作者：
E. Martin;Y. Lejeune
在稳定条件下对感热通量和潜热通量的测量很少。为了获得紊流通量的间接测量，使用了在非常稳定的条件下（寒冷、晴朗、低风的夜晚）在Col de Porte实验室（法国a.s.l. 1320米）测量的气象数据。测量了辐射通量，利用雪模型Crocus计算了积雪内的传导，并将湍流通量作为地表能量平衡方程的残差项确定。这些数据被用来拟合雪模式湍流通量的一个新的参数化。与理论相比，湍流通量增加了。还将番红花应用于LEADEX92实验的数据，并将该模型计算的湍流通量与现场用声速计/温度计测量的通量进行了比较。
Measurements of sensible- and latent-heat fluxes under stable conditions are rare. In order to obtain indirect measurements of turbulent fluxes, meteorological data measured at the Col de Porte laboratory (1320 m a.s.l, France) under very stable conditions (cold, clear night with low wind) are used. The radiative fluxes are measured, the conduction within the snowpack is calculated using the snow model Crocus and the turbulent fluxes are determined as a residual term of the surface-energy balance equation. These data were used to fit a new parameterization of the turbulent fluxes for the snow model. The turbulent fluxes are increased as compared to the theory. Crocus was also applied to the data from the LEADEX92 experiment and the turbulent fluxes calculated by the model were compared to the fluxes measured using sonic anemometers/thermometers on the site.