Thermal diffusivity of snow is an important thermodynamic property associated with key hydrological phenomena such as snow melt and heat and water vapor exchange with the atmosphere. Direct determination of snow thermal diffusivity requires coupled point measurements of thermal conductivity and density, which continually change due to snow metamorphism. Traditional methods for determining these two quantities are generally limited by temporal resolution. In this study we present a method to determine the thermal diffusivity of snow with high temporal resolution using snow temperature profile measurements. High resolution (between 2.5 and 10 cm at 1 min) temperature measurements from the seasonal snow pack at the Plaine-Morte glacier in Switzerland are used as initial conditions and Neumann (heat flux) boundary conditions to numerically solve the one-dimensional heat equation and iteratively optimize for thermal diffusivity. The implementation of Neumann boundary conditions and a ttest, ensuring statistical significance between solutions of varied thermal diffusivity, are important to help constrain thermal diffusivity such that spurious high and low values as seen with Dirichlet (temperature) boundary conditions are reduced. The results show that time resolved thermal diffusivity can be determined from temperature measurements of seasonal snow and support density-based empirical parameterizations for thermal conductivity.

H.J. Oldroyd

C.W. Higgins

H. Huwald

J.S. Selker

M.B. Parlange

Advances in Water Resources

ADVANCES IN WATER RESOURCES 为介绍在理解水资源系统方面的基础科学进展提供了一个论坛。水资源进步的范围包括理论、计算和实验方法的任何组合，用于促进对地表或地下水资源系统或这些系统与大气、地圈、生物圈和人类社会的相互作用的基本理解。涉及不试图得出更广泛结论的案例研究的手稿、工程设计、应用水力学或水质和处理的研究，以及不促进对水文过程的基本理解的现有知识的应用，不适用于进展水资源。将考虑的适当主题领域的示例包括：• 地表和地下水文学• 水文气象• 环境流体动力学• 生态水文学和生态流体动力学• 多孔介质中的多相迁移现象• 流体流动和物质迁移和反应过程

Advances in Water Resources provides a forum for the presentation of fundamental scientific advances in the understanding of water resource systems. The scope of the journal includes any combination of theoretical, computational, and experimental methods aimed at enhancing the fundamental understanding of surface or groundwater resource systems and their interactions with the atmosphere, lithosphere, biosphere, and human society. Manuscripts that involve case studies, engineering design, applied hydraulics, or research on water quality and treatment, which do not aim to derive broader conclusions or do not promote a fundamental understanding of hydrological processes, are not suitable for submission. Examples of appropriate subject areas include: • Surface and groundwater hydrology • Hydrometeorology • Environmental fluid dynamics • Eco-hydrology and eco-fluid dynamics • Multiphase transport phenomena in porous media • Fluid flow and mass transport and reaction processes.

《Advances in Water Resources》为研究水资源系统的基础科学进展提供了一个论坛。该期刊涵盖的主题包括理论、计算和实验方法的结合，以促进对地表和地下水资源系统及其与大气、地圈、生物圈和人类社会相互作用的理解。适合投稿的内容包括案例研究、工程设计、应用水力学、水质和处理研究等，但不包括那些不促进水文过程基本理解的现有知识应用。适当的主题领域示例包括：• 地表和地下水文学 • 水文气象 • 环境流体动力学 • 生态水文学和生态流体动力学 • 多孔介质中的多相迁移现象 • 流体流动和物质迁移与反应过程。

Category	Quartile
环境科学与生态学	2
环境科学与生态学, 水资源	2

Thermal diffusivity of seasonal snow determined from temperature profiles

ivySCI AI Smartly Parses PDF, Answers Researchers' Questions, and Helps You Understand Papers in Seconds

Journal Info