@Article{HajraTsurBrumEche:2017:CaStDu,
author = "Hajra, Rajkumar and Tsurutani, Bruce T. and Brum, Christiano G. M.
and Echer, Ezequiel",
affiliation = "{Laboratoire de Physique et Chimie de l'Environnement et de
l'Espace} and Jet Propulsion Laboratory, California Institute of
Technology and {Arecibo Observatory/SRI International} and
{Instituto Nacional de Pesquisas Espaciais (INPE)}",
title = "High-speed solar wind stream effects on the topside ionosphere
over Arecibo: A case study during solar minimum",
journal = "Geophysical Research Letters",
year = "2017",
volume = "44",
number = "15",
pages = "7607--7617",
month = "Aug.",
abstract = "The impact of a high-speed solar wind stream (HSS) on the topside
near-equatorial ionosphere (Arecibo: 28.17°N, L = 1.3) is
investigated for the first time. Although the HSS did not lead to
any significant geomagnetic storm activity, the ionosphere over
Arecibo became hotter and expanded significantly in altitude as
compared to a non-HSS interval. The O+/H+ transition height hT
increased by ~200 km in the daytime and by ~100 km at night. At
the hT, the peak ionospheric electron and ion temperatures
increased by ~200500 K during day and by ~5070 K at night. While
the O+ ion concentration exhibited an overall enhancement, deep
penetration of the H+ ions below hT are observed during the day.
The noontime peak electron density was ~4 times higher during the
HSS event compared to the non-HSS interval. We present three
possible mechanisms to explain this topside ionospheric heating.",
doi = "10.1002/2017GL073805",
url = "http://dx.doi.org/10.1002/2017GL073805",
issn = "0094-8276",
language = "en",
targetfile = "Hajra_et_al-2017-Geophysical_Research_Letters.pdf",
urlaccessdate = "16 jun. 2024"
}