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Artículo

Evidence of Geomagnetic Storm Effects in the Lower Atmosphere: A Case Study

Mansilla, Gustavo AdolfoIcon ; Zossi Artigas, Marta MariaIcon
Fecha de publicación: 01/2010
Editorial: Springer
Revista: Studia Geophysica Et Geodaetica
ISSN: 0039-3169
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Meteorología y Ciencias Atmosféricas

Resumen

Disturbances produced by geomagnetic storms in the higher regions of the Earth's atmosphere, such as in the ionospheric F2 region and in the lower ionosphere, are relatively better known than those produced at lower altitudes, where the effects of geomagnetic storms have been little studied. During magnetically perturbed conditions, some changes in pressure and temperature at high latitudes have been observed, from the surface level to heights of around 30 km, but there are no morphological studies and/or patterns of behavior. Moreover, the physical mechanisms are still unknown and what exists is a matter of controversy. Thus, the aim of this paper is to contribute to the vertical profile of the effects of geomagnetic storms as observed in the lower sectors of the atmosphere. For that, we study the variations of two atmospheric parameters (temperature and wind speed) during an intense geomagnetic storm (minimum Dst = -300 nT), at heights between about 6 km and 20 km. The data used were obtained from weather balloon flights carried out at low, mid and mid-high latitudes in different longitudinal sectors of the northern hemisphere, which took place twice per day: 00:00 and 12:00 UT. Small, but statistically significant changes in temperature and in zonal component of the neutral winds are observed at mid-high latitudes, which can be linked to short-term geomagnetic forcing. However, the results show different atmospheric response to the geomagnetic storm in the different longitudinal sectors at tropospheric and stratospheric levels, which suggests a regional character of the geomagnetic storms effects at tropospheric levels. © 2010 Institute of Geophysics of the ASCR, v.v.i.
Palabras clave: Geomagnetic Storm , Temperature , Wind Velocity
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info:eu-repo/semantics/restrictedAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/72304
URL: https://link.springer.com/article/10.1007/s11200-010-0028-4
DOI: https://doi.org/10.1007/s11200-010-0028-4
Colecciones
Articulos(CCT - NOA SUR)
Articulos de CTRO.CIENTIFICO TECNOL.CONICET - NOA SUR
Citación
Mansilla, Gustavo Adolfo; Zossi Artigas, Marta Maria; Evidence of Geomagnetic Storm Effects in the Lower Atmosphere: A Case Study; Springer; Studia Geophysica Et Geodaetica; 54; 3; 1-2010; 487-494
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