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The Use of HYDRUS-1D for Groundwater Recharge Estimation in Boreal Environmentsстатья
- Авторы: Grinevskiy S.O., Pozdniakov S.P.
- Сборник: Proceedings of the 4th International Conference "HYDRUS Software Applications to Subsurface Flow and Contaminant Transport Problems", edited by J. Šimůnek, M. Th. van Genuchten, and R. Kodešová, March 21-22, 2013
- Год издания: 2013
- Место издания: Dept. of Soil Science and Geology, Czech University of Life Sciences Prague, Czech Republic. ISBN: 978-80-213-2380-3
- Первая страница: 107
- Последняя страница: 118
- Аннотация: The well-known package HYDRUS-1D (Šimůnek et al., 2009) was used for groundwater recharge simulations based on long term meteorological data with daily resolution. For a boreal climate with a long winter period, initial meteorological data such as precipitation cannot be used directly as the atmospheric boundary condition in HYDRUS. This data must be preprocessed to take snow accumulation and snow melting, evaporation from snow and vegetation cover, and soil freezing-defrosting processes into account. For this purpose, SurfBal (Grinevskii and Pozdnyakov, 2010), a special preprocessing code for simulating surface water and energy balances and generating upper boundary conditions for HYDRUS-1D was developed. SurfBal calculates surface water balance using known daily values of precipitation, solar radiation, and maximum and minimum temperatures. It calculates interception by canopy, surface (leaf and snow) evaporation, snow accumulation, consolidation of snowpack and its melting and surface runoff, as well as initial potential values of evaporation, transpiration, and input water fluxes for HYDRUS-1D. The results of water balance and groundwater recharge simulations using SurfBal and HYDRUS-1D for climate conditions of the south-western part of Moscow Artesian Basin show the principal role of the spring-period surface-soil water budget for groundwater recharge under various landscapes and soil cover, and the effects of various groundwater level depths.
- Добавил в систему: Гриневский Сергей Олегович