Simulation of Vesuvius volcanic ash hazards within Romanian airspace using the Hybrid Single-Particle Lagrangian Integrated Trajectory Volcanic Ash numerical model,Meteorological Applications

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Simulation of Vesuvius volcanic ash hazards within Romanian airspace using the Hybrid Single-Particle Lagrangian Integrated Trajectory Volcanic Ash numerical model
Meteorological Applications ( IF 2.3 ) Pub Date : 2021-05-25 , DOI: 10.1002/met.2001
Ana Denisa Urlea _{1,

2} , Nicu Barbu ₂ , Simona Andrei ₃ , Sabina Ştefan ₁

Affiliation

The goal of this article is to investigate how the Romanian air space would be affected by a potential large eruption of Vesuvius volcano. In order to characterize the potential impact of such an event on the Romanian air space, we simulated the ash plume transport from a hypothetical explosive eruption with a significant magnitude, that is, Volcanic Explosivity Index (VEI 4). The volcanic ash cloud transport towards Romania was described by using the mass distribution from the HYbrid Single Particle Lagrangian Integrated Trajectory (HYSPLIT) for Volcanic Ash numerical model. To assess the dominant air circulation types, an adaptation of the WetterLagenKlassification (WLK) classification scheme was used. The results emphasized that a long-wave trough and southwesterly flow in upper levels would favour the direct transport of volcanic ash cloud towards the Romanian air space. Non-negative matrix factorization method has been used to identify the atmospheric layer with the maximum values of mass. The simulation results reveal that the maximum values of averaged mass were obtained at an altitude around 7 km.

中文翻译：

使用混合单颗粒拉格朗日综合轨迹火山灰数值模型模拟罗马尼亚领空内维苏威火山灰的危害

本文的目的是研究潜在的维苏威火山大爆发对罗马尼亚领空的影响。为了描述此类事件对罗马尼亚领空的潜在影响，我们模拟了一个假想的喷发，该喷发来自一个假设爆炸，爆发幅度很大，即火山爆炸指数（VEI 4）。利用火山灰数值模型的混合单粒子拉格朗日综合轨迹（HYSPLIT）的质量分布描述了向罗马尼亚的火山灰云运移。为了评估主要的空气循环类型，使用了WetterLagenKlassification（WLK）分类方案的改编版。结果强调，长波谷和西南偏南气流将有利于火山灰云直接向罗马尼亚领空运输。非负矩阵分解方法已用于识别质量最大值的大气层。仿真结果表明，平均质量的最大值是在7 km左右的高度获得的。

更新日期：2021-05-26

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