Results 41 to 50 of about 113 (80)
Drivers of Mid‐Latitude Quiet‐Time Longitude Variations in Ionospheric Density
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract The aim of this study is to provide an observational benchmark of mid‐latitude quiet‐time variability in winds, O/N2, and TEC across longitude and local time to provide a foundation for future model–data comparison studies. The quiet‐time ionospheric structure is not uniform but rather exhibits pronounced longitudinal and local‐time ...
K. R. Greer +3 more
wiley +1 more source
Oscillation criteria for semilinear elliptic equations with a damping term in R^n
Electronic Journal of Differential Equations, 2010 We use a method based on Picone-type identities to find oscillation conditions for the equation $$ sum_{i j =1}^n frac{partial}{partial x_i} Big( a_{ij}(x) frac{partial}{partial x_j} Big)u + f(x,u, abla u) + c(x) u =0,, $$ with Dirichlet boundary ...
Tadie
doaj
WACCM‐X Simulation of the Atmosphere From 1950 Through 2024 at an Hourly Resolution
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract Modeling of the upper atmosphere, namely the thermosphere and ionosphere, is becoming important for applications such as orbital propagation (including satellite collision avoidance), radio propagation for communications, radar and position, navigation and timing.
M. K. Brown +3 more
wiley +1 more source
Necessary and sufficient conditions of existence for a system involving the p-Laplacian (1
, 2003 In this work, we study the existence of positive solutions for the system(P)−Δpu=μf(x,u,v)inRN,−Δpv=μg(x,u,v)inRN,lim|x|→∞u(x)=0=lim|x|→∞v(x),where Δpu=div(|∇u|p−2∇u) is the p-Laplacian ...
Chaı̈b, K.
core +1 more source
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract A number of external sources and internal circulation mechanisms have been proposed to explain the well‐known semiannual variation in global mean thermospheric densities. We use the polarity of the Y $Y$‐component (dawn to dusk) of the Interplanetary Magnetic Field (IMF) in the Geocentric Solar Equatorial (GSEQ) frame to identify the influence,
Mike Lockwood +4 more
wiley +1 more source
Investigating the Impact of Rocket Exhaust on Ionospheric Disturbances
Space Weather, Volume 24, Issue 5, May 2026.Abstract The study of chemical releases into the ionosphere is crucial for understanding ionospheric dynamics and managing space environmental effects. In this work, we investigate the impact of rocket exhaust emissions, particularly CO2 and H2O, on electron density in the ionosphere.
Cunqun Fan +7 more
wiley +1 more source
A generalized nonlinear Picone identity for the p-biharmonic operator and its applications [PDF]
Journal of Inequalities and Applications, 2019 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
openaire +3 more sources
Updates, Examples and Validation of the Global Ionosphere Thermosphere Model
Space Weather, Volume 24, Issue 5, May 2026.Abstract This study provides an updated description, example simulations, and validation of the Global Ionosphere Thermosphere Model (GITM). The updates to GITM include using an exothermic semi‐implicit chemistry scheme that no longer requires an altitude dependent heating efficiency; an ionospheric wind‐driven dynamo; improved neutral, ion, and ...
A. J. Ridley +3 more
wiley +1 more source
A linearization method in oscillation theory of half-linear second-order differential equations
Journal of Inequalities and Applications, 2005 Using inequalities for a certain function appearing in the half-linear version of Picone's identity, we show that oscillatory properties of the half-linear second-order differential equation , , can be investigated via oscillatory properties of a ...
Došlý Ondřej +1 more
doaj
Journal of Geophysical Research: Space Physics, Volume 131, Issue 5, May 2026.Abstract This study presents a cross‐comparison of mesosphere and lower thermosphere (MLT) neutral temperatures between 88 and 110 km measured by ICON/Michelson Interferometer for Global High‐resolution Thermospheric Imaging (MIGHTI) and Thermosphere Ionosphere Mesosphere Energetics and Dynamics/Sounding of the Atmosphere using Broadband Emission ...
Manbharat Dhadly +4 more
wiley +1 more source