Impact of Thunderstorms on the Upper Atmosphere

A special issue of Atmosphere (ISSN 2073-4433). This special issue belongs to the section "Upper Atmosphere".

Deadline for manuscript submissions: closed (31 August 2024) | Viewed by 2377

Special Issue Editor


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Guest Editor
Research Center for Environmental Changes, Academia Sinica, Taipei 115, Taiwan
Interests: cloud microphysics; cloud dynamics; climate change

Special Issue Information

Dear Colleagues,

Thunderstorms play an important role in global atmospheric processes by transporting momentum, energy and trace chemicals from near the earth surface to the upper atmosphere by means of their powerful updrafts—the strongest in nature. Once hitting the tropopause, they excite strong internal gravity waves that propagate throughout the stable stratosphere and enter the mesosphere, where many of the gravity waves break and release energy in this layer. Others continue to propagate to the mesopause at an altitude of ~ 100 km and may excite concentric airglow, observed using satellites (such as SUOMI NPP/VIIRS) as well as ground-based instruments.  These storm-induced energy and momentum will continue to propagate to the higher thermosphere and ionosphere.

In addition, thunderstorms are also a major player in atmospheric electricity. Aside from the more familiar cloud-to-ground and in-cloud lightning flashes, they also produce electrical phenomena in the upper atmosphere called transient luminous events (TLEs) such as elves, red sprites, and blue jets. These upper atmospheric phenomena associated with thunderstorms are just beginning to be studied, but many details are still poorly understood and their importance underappreciated.

Recent studies have also shown that thunderstorms can transport substantial amounts of trace chemicals, such as liquid substance, trace gases and aerosol particles, to the stratosphere via internal gravity wave breaking. The details of this process and its impact on the upper atmospheric physics and chemistry are still largely unknown and in need of study.

This Special Issue, welcomes papers dealing with the observational methods, data analyses and modeling of all phenomena associated with the impact of thunderstorms on upper atmospheric processes. Potential topics include, but are not limited to the following topics: satellite observations of storm top phenomena; analysis and modeling of storm-top processes; upward internal gravity wave generation and propagation induced by thunderstorms; observations of storm impact phenomena on the upper atmosphere; upward lightning discharge processes; and the upward transportation of trace chemicals such as ice, water vapor, trace gases and aerosol particles.

Prof. Dr. Pao K. Wang
Guest Editor

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Keywords

  • thunderstorms
  • upper atmosphere
  • lightning discharge processes
  • atmospheric electricity
  • internal gravity waves
  • wave breaking
  • airglow

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Published Papers (2 papers)

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Research

19 pages, 6484 KiB  
Article
Simulated Impacts of Thundercloud Charge Distributions on Sprite Halos Using a 3D Quasi-Electrostatic Field Model
by Jinbo Zhang, Jiawei Niu, Zhibin Xie, Yajun Wang, Xiaolong Li and Qilin Zhang
Atmosphere 2024, 15(11), 1395; https://doi.org/10.3390/atmos15111395 - 19 Nov 2024
Cited by 1 | Viewed by 819
Abstract
Sprite halos are transient luminous phenomena in the lower ionosphere triggered by tropospheric lightning. The effect of removed charge distributions on sprite halos has not been sufficiently discussed. A three-dimensional (3D) quasi-electrostatic (QES) field model was developed in this paper, including the ionospheric [...] Read more.
Sprite halos are transient luminous phenomena in the lower ionosphere triggered by tropospheric lightning. The effect of removed charge distributions on sprite halos has not been sufficiently discussed. A three-dimensional (3D) quasi-electrostatic (QES) field model was developed in this paper, including the ionospheric nonlinear effect and optical emissions. Simulation results show that, for a total charge of 150 C removed within 1 ms with different spatial distributions, higher altitudes of charge removal lead to stronger electric fields and increase sprite halos’ emission intensities. The non-axisymmetric horizontal distribution of charge affects mesospheric electric fields, and the corresponding scales and intensities of emissions vary with observation orientations. Considering the tilted dipole charge structure due to wind shear, the generated electric field and the corresponding position of sprite halos shift accordingly with the tropospheric removed charge, providing an explanation for the horizontal displacement between sprite halos and the parent lightning. Full article
(This article belongs to the Special Issue Impact of Thunderstorms on the Upper Atmosphere)
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14 pages, 3241 KiB  
Article
Modeling the Effect of Ionospheric Electron Density Profile and Its Inhomogeneities on Sprite Halos
by Jinbo Zhang, Jiawei Niu, Zhibin Xie, Yajun Wang, Xiaolong Li and Qilin Zhang
Atmosphere 2024, 15(10), 1169; https://doi.org/10.3390/atmos15101169 - 30 Sep 2024
Cited by 1 | Viewed by 958
Abstract
Sprite halos are diffuse glow discharges in the D-region ionosphere triggered by the quasi-electrostatic (QES) fields of lightning discharges. A three-dimensional (3D) QES model is adopted to investigate the effect of ionospheric electron density on sprite halos. The electron density is described by [...] Read more.
Sprite halos are diffuse glow discharges in the D-region ionosphere triggered by the quasi-electrostatic (QES) fields of lightning discharges. A three-dimensional (3D) QES model is adopted to investigate the effect of ionospheric electron density on sprite halos. The electron density is described by an exponential formula, parameterized by reference height (h’) and sharpness (β), and the local inhomogeneity has a Gaussian density distribution. Simulation results indicate that the reference height and steepness of the nighttime electron density affect the penetration altitudes and amplitudes of normalized electric fields, as well as the altitudes and intensities of the corresponding sprite halos optical emissions. A comparison of the daytime and nighttime conditions demonstrates that the daytime electron density profile is not favorable for generating sprite halos emissions. Furthermore, the pre-existing electron density inhomogeneities lead to enhanced local electric fields and optical emissions, potentially offering a plausible explanation for the horizontal displacement between sprites and their parent lightning, as well as their clustering. Full article
(This article belongs to the Special Issue Impact of Thunderstorms on the Upper Atmosphere)
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