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DOI	10.1016/j.atmosres.2020.105200
	Analysis of long-term potential gradient variations measured in the Argentinian Andes
	Tacza J.; Raulin J.-P.; Morales C.A.; Macotela E.; Marun A.; Fernandez G.
发表日期	2021
ISSN	0169-8095
卷号	248
英文摘要	Continuous measurements of the potential gradient are being recorded at the CASLEO astronomical observatory near to the Andes Mountain of Argentina, since 2010 (Latitude: 31°47.88′S, Longitude: 69°17.7′W, Altitude: 2552 masl). This study aims to use the potential gradient diurnal variation in fair weather conditions, which we named ‘standard curve’, to examine its correlation with the ‘universal’ Carnegie curve and to investigate its dependence with aerosol amount and lightning occurrences. In addition, a spectral analysis was performed to our data. The aerosol optical depth is recorded by an AERONET station at CASLEO, while the lightning occurrences was obtained from the STARNET network. For the analysis, the average of monthly, seasonal and annual electric field curves was determined. We found that the shape of these curves is preserved from year to year indicating their high reliability. The correlation between the standard curve for CASLEO and the Carnegie curve was found to be high (r = 0.94). However, some significant local effects were also found. We determined that these local effects in the standard curve may be associated to the convective process, which is more predominant during summertime than wintertime. The inspection of the seasonal variation of the potential gradient and the lightning occurrences showed a high similarity only after removing the effects of aerosols. Apart from this, the spectral analysis exposed a daily, annual and 165-day oscillation in the potential gradient. © 2020 Elsevier B.V.
英文关键词	Aerosols; Atmospheric electric field; Austausch process; Convective process; Global electric circuit
语种	英语
scopus关键词	Aerosols; Spectrum analysis; Aerosol optical depths; Astronomical observatories; Continuous measurements; Diurnal variation; Electric field curves; Long-term potential; Potential gradients; Seasonal variation; Lightning; AERONET; aerosol property; atmospheric convection; diurnal variation; electric field; lightning; optical depth; potential field; spectral analysis; Andes; Argentina
来源期刊	Atmospheric Research
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/141710
作者单位	Center of Radio Astronomy and Astrophysics Mackenzie, Engineering School, Mackenzie Presbyterian University, São Paulo, SP, Brazil; Institute of Astronomy, Geophysics and Atmospheric Science, Department of Atmospheric Science, University of São Paulo, São Paulo, SP, Brazil; Sodankyla Geophysical Observatory, University of Oulu, Sodankyla, Finland; Instituto de Ciencias Astronómicas de la Tierra y el Espacio, ICATE-CONICET-UNSJ, San Juan, Argentina; Complejo Astronómico El Leoncito, CASLEO, San Juan, Argentina
推荐引用方式 GB/T 7714	Tacza J.,Raulin J.-P.,Morales C.A.,et al. Analysis of long-term potential gradient variations measured in the Argentinian Andes[J],2021,248.
APA	Tacza J.,Raulin J.-P.,Morales C.A.,Macotela E.,Marun A.,&Fernandez G..(2021).Analysis of long-term potential gradient variations measured in the Argentinian Andes.Atmospheric Research,248.
MLA	Tacza J.,et al."Analysis of long-term potential gradient variations measured in the Argentinian Andes".Atmospheric Research 248(2021).