When a dual‐probe heat pulse (DPHP) sensor is installed in soil near the soil–atmosphere interface, the basic assumptions of the infinite line heat source (ILS) model and its improvement, the infinite line heat source model with an adiabatic boundary condition (ILS‐ABC) might not be satisfied because of wind. This study aims to explore the effects of wind on DPHP measurements and to compare the performance of the ILS and ILS‐ABC models at different values of wind velocity (υ) and burial depth (d). Our study shows that the results of laboratory experiments, COMSOL simulations, and field experiments are consistent with each other. For dry sand with d ≤ 4 mm, the effects of wind is non‐negligible at υ ≥ 3.5 m s⁻¹ and the DPHP method does not provide accurate estimations whether the ILS model or the ILS‐ABC model is used. Field experiments are prone to large background temperature fluctuations, which can cause a commonly used linear detrending method to perform poorly. In general, at υ < 2.7 m s⁻¹ in field and d = 5 mm, the ILS‐ABC model provides more accurate estimations with relative errors of <15% in thermal conductivity and relative errors of <9% in heat capacity.

中文翻译：

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用双探针热脉冲法测量风对土壤热特性的影响

当在土壤-大气界面附近的土壤中安装双探针热脉冲（DPHP）传感器时，无限线热源（ILS）模型的基本假设及其改进，具有绝热边界条件的无限线热源模型（ILS‐ABC）可能由于风而无法满足。本研究旨在探讨风对DPHP测量的影响，并比较不同风速（υ）和埋深（d）下ILS和ILS-ABC模型的性能。我们的研究表明，实验室实验，COMSOL模拟和现场实验的结果彼此一致。对于干砂d ≤4mm时，风的影响是在不可忽略υ ≥3.5毫秒^-1无论使用ILS模型还是ILS-ABC模型，DPHP方法都无法提供准确的估计。现场实验容易产生较大的背景温度波动，这可能导致常用的线性去趋势方法的性能下降。通常，在现场υ <2.7 ms ^-1且d  = 5 mm时，ILS-ABC模型可提供更准确的估计，其相对热导率相对误差<15％，热容相对误差<9％。