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2019/2020 drought impacts on South America and atmospheric and oceanic influences
(Elsevier, 2021-12)
The 2019/2020 drought in South America caused many impacts on several sectors, as agriculture, water resources and environment, which are reported here. Besides, there is a discussion about anomalies in the atmosphere and ...
Whole atmosphere modeling: Connecting terrestrial and space weather
(American Geophysical Union, 2011-11-12)
At the turn of the century R. G. Roble advanced an ambitious program of developing an atmospheric general circulation model (GCM) extending from the surface to the exosphere. He outlined several areas of research and ...
Lunar tidal effects in the electrodynamics of the low latitude ionosphere
(Elsevier, 2013-02-04)
The low latitude ionosphere is highly variable over a large range of temporal and spatial scales even during geomagnetically quiet periods, largely as a result of electrodynamic plasma drift effects. Several recent ...
Lunar tidal effects in the electrodynamics of the low-latitude ionosphere
(Utah State University, 2013)
We used extensive measurements made by the Jicamarca Unattended Long-Term Investigations of the Ionosphere and Atmosphere (JULIA) and Incoherent Scatter Radar (ISR) systems at Jicamarca, Peru during geomagnetic quiet ...
Ionospheric Irregularities: Frontiers
(American Geophysical Union, 2014-03-14)
There are several thermosphere ionosphere models with bottom boundaries somewhere in the middle atmosphere. Achieving a true whole atmosphere modeling capability requires the specification of atmospheric conditions at a ...
Sudden stratospheric warmings seen in MINOS deep underground muon data
(AMER GEOPHYSICAL UNION, 2009)
The rate of high energy cosmic ray muons as measured underground is shown to be strongly correlated with upper-air temperatures during short-term atmospheric (10-day) events. The effects are seen by correlating data from ...
Coherent and incoherent scatter radar study of the climatology and day-to-day variability of mean F-region vertical drifts and equatorial spread F
(American Geophysical Union, 2016-02)
We conducted a comprehensive analysis of the vertical drifts and equatorial spread F (ESF) measurements made by the Jicamarca incoherent scatter radar (ISR) between 1994 and 2013. The ISR measurements allowed us to construct ...
SAMI3/SD‐WACCM‐X simulations of ionospheric variability during northern winter 2009
(American Geophysical Union, 2015-08-07)
We have performed simulations using the Naval Research Laboratory's physics‐based model of the ionosphere, Sami3 is A Model of the Ionosphere (SAMI3), to illustrate how neutral wind dynamics is responsible for day‐to‐day ...
Efeitos do SSW na Ionosfera equatorial observado pelo TEC: estudo de caso
(Universidade Federal do Rio Grande do NorteBrasilUFRNGeofísica, 2018-11-06)
The Sudden Stratospheric Warming(SSW) is a weather event that occurs during the winters of both the northern and southern hemispheres. This type of event has several saws ranging from changes in ...
Equatorial 150 km echoes and daytime F-region vertical plasma drifts in the Brazilian longitude sector
(European Geosciences Union, 2013-10-31)
Previous studies showed that conventional coherent backscatter radar measurements of the Doppler velocity of the so-called 150 km echoes can provide an alternative way of estimating ionospheric vertical plasma drifts during ...