Mesospheric winds have been measured by meteor radar at Cachoeira Paulista (22.7° S;
45° W) since April 1999. The tidal components were analyzed over about 21 years of …

This work presents an analysis of the ionospheric responses to the solar eclipse that
occurred on December 14, 2020, over the Brazilian sector. This event partially covers the …

Sporadic‐E (Es) layers are investigated over five Digisonde stations located inside (Santa
Maria and Cachoeira Paulista), boundary (São Luís), and outside (Millstone Hill and Port …

In this work, we use a new version of the Disturbance Ionosphere Index (DIX) to evaluate
ionospheric disturbances over the Brazilian region during two intense geomagnetic storms …

We present a study about the atypical and spreading Sporadic E-layers (Es) observed in
Digisonde data. We analyzed a set of days around space weather events from 2016 to 2018 …

This paper presents an analysis of Equatorial Plasma Bubble (EPB) events that occurred
during pre‐and post‐sunrise hours in the South America sector on 18 March 2015, when the …

This study investigates the effects of the electric fields (E‐fields) on day‐to‐day variations in
geomagnetic mid‐latitude sporadic E layers (EsLs) using a numerical ionospheric model. It …

The development of sporadic-E (Es) layers over five Digisonde stations in the American
sector is analyzed. This work aims to investigate the dynamic of such layers during the days …

This work analyzes the worldwide development of Sporadic E (Es) layers in different regions
during a High-Speed Solar Wind Stream (HSS) event on March 18, 2018. We used …

The equatorial (Esq) and blanketing (Esb) sporadic (Es) layers occur due to the Equatorial
Electrojet Current (EEJ) plasma instabilities and tidal wind components, respectively. Both …