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DOI | 10.1029/2020GL087094 |
A first look at cloud inhomogeneity and its effect on lightning optical emission | |
K. N. Brunner; P. M. Bitzer | |
2020-05-07 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2020 |
英文摘要 | Optical emission observed from lightning is the result of in‐cloud scattering, lightning channel geometry, and optical energy of the source discharge. To better understand how scattering affects measured optical emission, we developed a Monte Carlo (MC) model using an inhomogeneous scattering profile from a simulated storm using two‐moment bulk microphysics in the Weather Research and Forecasting (WRF) model, including the concentration and size distribution of cloud droplets and ice particles. Within the MC model lightning discharges are simulated as point and line sources. These idealized simulations indicate that for a lightning discharge at 7 km altitude approximately 22% and 13% of light, emitted near and away (respectively) from a reflectivity core will reach cloud‐top in a thunderstorm. The vertical gradient of the microphysical environment impacts light reaching cloud‐top regardless of overall particle concentration. Increasing cloud ice modifies the gradient of the microphysical profile and modulates the profile gradient effect. |
领域 | 气候变化 |
URL | 查看原文 |
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文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/249188 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | K. N. Brunner,P. M. Bitzer. A first look at cloud inhomogeneity and its effect on lightning optical emission[J]. Geophysical Research Letters,2020. |
APA | K. N. Brunner,&P. M. Bitzer.(2020).A first look at cloud inhomogeneity and its effect on lightning optical emission.Geophysical Research Letters. |
MLA | K. N. Brunner,et al."A first look at cloud inhomogeneity and its effect on lightning optical emission".Geophysical Research Letters (2020). |
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