Implementation of the Brunswick model system into the Hydrus software suite

IF 2.5 3区地球科学 Q3 ENVIRONMENTAL SCIENCES

Vadose Zone Journal Pub Date : 2024-04-01 DOI:10.1002/vzj2.20326

Efstathios Diamantopoulos, Jirka Simunek, Tobias K. D. Weber

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引用次数: 0

Abstract

The Brunswick modular framework for modeling unsaturated soil hydraulic properties (SHP) over the full moisture range was implemented in the Hydrus suite. Users can now additionally choose between four different variants of the Brunswick model: (i) van Genuchten–Mualem (VGM), (ii) Brooks–Corey, (iii) Kosugi, and (iv) modified van Genuchten. For demonstration purposes, simulation results for two different setups, (i) bare soil evaporation and (ii) root water uptake, are presented, along with a comparison of the original VGM model and its Brunswick variant. Results show that the original VGM model underestimates the simulated cumulative evaporation and cumulative transpiration due to the inconsistent representation of the SHP in the dry moisture range. We also implemented a two‐step hydro‐PTF (pedotransfer function) into the Hydrus suite that converts the parameters of the original VGM model (from Rosetta) to the corresponding Brunswick variant. In that way, physically comprehensive simulations are ensured if no data on SHP are directly available, but information on physical soil properties (e.g., texture and bulk density) exists.

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将不伦瑞克模型系统纳入水文学软件套件

水文学套件中采用了用于模拟全湿度范围内非饱和土壤水力特性（SHP）的布朗斯维克模块框架。现在，用户还可以在 Brunswick 模型的四个不同变体之间进行选择：(i) van Genuchten-Mualem (VGM)，(ii) Brooks-Corey，(iii) Kosugi 和 (iv) 改进的 van Genuchten。为演示起见，本文介绍了两种不同设置的模拟结果：(i) 裸土蒸发和 (ii) 根系吸水，并对原始 VGM 模型及其不伦瑞克变体进行了比较。结果表明，原始 VGM 模型低估了模拟累积蒸发量和累积蒸腾量，原因是在干湿度范围内对 SHP 的表示不一致。我们还在 Hydrus 套件中实施了一个两步水文转换函数（hydro-PTF），将原始 VGM 模型（来自 Rosetta）的参数转换为相应的不伦瑞克变体。这样，如果无法直接获得有关 SHP 的数据，但存在有关土壤物理特性（如质地和容重）的信息，也能确保进行物理上全面的模拟。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Vadose Zone Journal 环境科学-环境科学

CiteScore

5.60

自引率

7.10%

发文量

审稿时长

3.8 months

期刊介绍： Vadose Zone Journal is a unique publication outlet for interdisciplinary research and assessment of the vadose zone, the portion of the Critical Zone that comprises the Earth’s critical living surface down to groundwater. It is a peer-reviewed, international journal publishing reviews, original research, and special sections across a wide range of disciplines. Vadose Zone Journal reports fundamental and applied research from disciplinary and multidisciplinary investigations, including assessment and policy analyses, of the mostly unsaturated zone between the soil surface and the groundwater table. The goal is to disseminate information to facilitate science-based decision-making and sustainable management of the vadose zone. Examples of topic areas suitable for VZJ are variably saturated fluid flow, heat and solute transport in granular and fractured media, flow processes in the capillary fringe at or near the water table, water table management, regional and global climate change impacts on the vadose zone, carbon sequestration, design and performance of waste disposal facilities, long-term stewardship of contaminated sites in the vadose zone, biogeochemical transformation processes, microbial processes in shallow and deep formations, bioremediation, and the fate and transport of radionuclides, inorganic and organic chemicals, colloids, viruses, and microorganisms. Articles in VZJ also address yet-to-be-resolved issues, such as how to quantify heterogeneity of subsurface processes and properties, and how to couple physical, chemical, and biological processes across a range of spatial scales from the molecular to the global.