Abstract This paper reports the first investigations of the mid-latitude convective boundary layer (CBL) electricity above the homogeneous land surface using a large-eddy simulation (LES). Our approach uses LES together with a subgrid kinematic model for relative dispersion of scalar to calculate Lagrangian trajectories of notional particles carrying radioactive nuclei, small atmospheric ions, and charged aerosol particles. This technique opens up new possibilities for quantifying the influence of various environmental conditions on the formation of the electrical state of the undisturbed lower atmosphere. We examine the altitude distribution of principal atmospheric electrical quantities in the CBL and lower free weakly stable atmosphere without clouds depending on surface turbulent heat flux, geostrophic wind speed, mixed-layer height, ionospheric potential, and various ion production rates due to cosmic rays and radioactive gases.

中文翻译：

---

中纬度对流边界层电：大涡模拟研究

摘要 本文首次报道了使用大涡模拟 (LES) 对均质地表上方的中纬度对流边界层 (CBL) 电力进行的调查。我们的方法将 LES 与用于标量相对分散的子网格运动学模型一起使用，以计算携带放射性核、大气小离子和带电气溶胶粒子的名义粒子的拉格朗日轨迹。这项技术为量化各种环境条件对未受干扰的低层大气电状态形成的影响开辟了新的可能性。我们根据地表湍流热通量、地转风速、混合层高度、