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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Daytime Ionospheric TEC Weather Study Over Latin America

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Romero-Hernandez, E. [1, 2] ; Denardini, C. M. [1] ; Takahashi, H. [1] ; Gonzalez-Esparza, J. A. [3] ; Nogueira, P. A. B. [4] ; de Padua, M. B. [1] ; Lotte, R. G. [1] ; Negreti, P. M. S. [1] ; Jonah, O. F. [5] ; Resende, L. C. A. [1] ; Rodriguez-Martinez, M. [6] ; Sergeeva, M. A. [3, 7] ; Barbosa Neto, P. F. [1] ; de la Luz, V [3, 7] ; Galera Monico, J. F. [8] ; Aguilar-Rodriguez, E. [3]
Total Authors: 16
[1] Inst Nacl Pesquisas Espaciais, Sao Jose Dos Campos - Brazil
[2] Univ Autonoma Nuevo Leon, Fac Ciencias Fis Matemat, LANCE, Monterrey - Mexico
[3] Univ Nacl Autonoma Mexico, Inst Geofis, Unidad Michoacan, LANCE, Morelia, Michoacan - Mexico
[4] Inst Fed Educ Ciencia & Tecnol Sao Paulo, Jacarei - Brazil
[5] MIT, Haystack Observ, Westford, MA 01886 - USA
[6] Univ Nacl Autonoma Mexico, Unidad Morelia, Escuela Nacl Estudios Super, Morelia, Michoacan - Mexico
[7] Univ Nacl Autonoma Mexico, Inst Geofis, Unidad Michoacan, CONACyT, Morelia, Michoacan - Mexico
[8] Univ Estadual Paulista, Dept Cartog, Presidente Prudente - Brazil
Total Affiliations: 8
Document type: Journal article
Source: JOURNAL OF GEOPHYSICAL RESEARCH-SPACE PHYSICS; v. 123, n. 12, p. 10345-10357, DEC 2018.
Web of Science Citations: 1

The present work is the first of a two-part weather study of the ionospheric Total Electron Content (TEC), based on data collected by four ground-based Global Navigation Satellite System networks that cover the whole Latin America from the Patagonia to the north of Mexico. From the best of our knowledge, the maps presented here are the first TEC maps obtained using ground-based data that covers the entire Latin America region, which represent an advance to the space weather monitoring and forecasting of the ionosphere. This work provides a qualitative and quantitative daytime analysis of the ionospheric TEC variation, which encompasses: (a) the response of TEC to the solar flux at midday; (b) the seasonal variation of TEC in different latitudinal ranges; and (c) the North-South asymmetry of TEC over Latin America. The response to the solar flux is based on day-to-day TEC variations during two periods of different solar activity conditions: 2011 (ascending phase) and 2014 (maximum). The approximations of meridional wind component derived from Horizontal Wind Model-14 model and h(m)F(2) obtained from International Reference Ionosphere model were used. Equinoctial asymmetries with an opposite configuration in high and moderate solar activity were identified in the TEC variation. For 2011, it was related to the solar flux change. However, in 2014, according to the h(m)F(2) variation, the influence of neutral wind becomes dominant. Among the results, we highlight an absence of winter anomaly in the Northern Hemisphere in 2014 and a stronger annual anomaly for latitudes under -20 degrees. (AU)

FAPESP's process: 14/11198-9 - Analysis of the Disturbed Electrical Fields Effects in the Sporadic Layers on Equatorials and Low Latitude Regions
Grantee:Láysa Cristina Araújo Resende Chagas
Support type: Scholarships in Brazil - Post-Doctorate