Scintillations in the signal-to-noise (SNR) profiles of GNSS radio occultation (RO)
measurements at lower ionospheric altitudes are caused by compact layers of high …

The possibility of sporadic E (Es) layer formation in the mid-latitude nighttime lower
thermosphere by horizontal homogeneous and inhomogeneous (vertically changing) winds …

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 study analyzes strong sporadic E layer (Es) formation in Boa Vista (BV, 2.8° N, 60.7° W,
dip: 18°), a low‐latitude region in the Brazilian sector, which occurred far after the onset of a …

This work presents new results about sporadic E-layers (Es layers) using GPS (global
positioning system) radio occultation (RO) measurements obtained from the FORMOSAT …

The formation of multilayered sporadic E by atmospheric gravity waves (AGWs), propagating
in the mid-latitude lower thermosphere, is shown theoretically and numerically. AGWs with a …

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 …

The COSMIC radio occultation observations are used to investigate the wavenumber‐4
(WN4) structure of the Sporadic E (Es) layer during 2007–2018. The WN4 pattern is …

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 …

The dynamics of the electron population in the Earth's radiation belts affect the upper
atmosphere's ionization level through the low-energy Electron Precipitation (EP). The impact …