Results 41 to 50 of about 118,766 (238)

Van Allen Probes Observations of a Fundamental Poloidal Wave in the Plasmasphere

Journal of Geophysical Research: Space Physics, Volume 131, Issue 11, November 2026.
Abstract All past spacecraft observations of fundamental poloidal Alfvén (P1) waves attributed to ion drift resonance have been made outside the plasmasphere. In this study, we present the first spacecraft observations of a plasmaspheric P1 wave driven by that resonance.
Kazue Takahashi, Tomotsugu Yamakawa, Matina Gkioulidou, D. G. Mitchell, Jerry W. Manweiler   +4 more
wiley   +1 more source

Study on Equatorial Bubbles Detected by SPS IMS Onboard the Kompsat-I [PDF]

Journal of Astronomy and Space Sciences, 2002
Space Physics Sensor onboard the KOMPSAT-1, which was launched at 1999, had transmitted ionospheric data during the solar maximum from June 2000 to August 2001.
Jaejeung Park, Jaejin Lee, Ensang Lee, Kyoung-Wook Min   +3 more
doaj   +1 more source

Quiet Time Ionosphere‐Thermosphere Predictability During Sudden Stratospheric Warmings in TIE‐GCM

Space Weather, Volume 24, Issue 11, November 2026.
Abstract We investigate the predictability of the ionosphere‐thermosphere (IT) region during sudden stratospheric warmings (SSWs) by using subseasonal hindcasts in the Community Earth System Model, version 2 with the Whole Atmosphere Community Climate Model (CESM2 [WACCM6]) to force the lower boundary of the TIE‐GCM.
B. C. Martinez, N. M. Pedatella, Xian Lu
wiley   +1 more source

Daily and seasonal variations in the linear growth rate of the Rayleigh-Taylor instability in the ionosphere obtained with GAIA

Progress in Earth and Planetary Science, 2018
The linear growth rates of the Rayleigh-Taylor (R-T) instability in the ionosphere from 2011 to 2013 were obtained with a whole atmosphere-ionosphere coupled model GAIA (ground-to-topside model of atmosphere and ionosphere for aeronomy).
Hiroyuki Shinagawa, Hidekatsu Jin, Yasunobu Miyoshi, Hitoshi Fujiwara, Tatsuhiro Yokoyama, Yuichi Otsuka   +5 more
doaj   +1 more source

A Data‐Driven Model of the Geomagnetic Storm Recovery Phase

Space Weather, Volume 24, Issue 11, November 2026.
Abstract The recovery phase of geomagnetic storms poses a significant challenge for accurate space weather forecasting. Traditional models based on a constant decay rate fail to capture its prolonged and variable duration, leading to uncertainties in predicting impacts on technological systems.
G. Consolini, M. Lacal, P. De Michelis, S. Benella, E. Consolini, M. Piersanti   +5 more
wiley   +1 more source

Effects of strong IMF B_z southward events on the equatorial and mid-latitude ionosphere [PDF]

Annales Geophysicae, 2009
Dayside ionospheric response to five intense geomagnetic storms (Dst<−120 nT) that occurred in 2001–2005 was investigated by use of simultaneous TEC measurements by the CHAMP, SAC-C, TOPEX/Jason-1 satellites.
E. Astafyeva, E. Astafyeva
doaj   +1 more source

Long‐Term Increase in Equatorial Rayleigh‐Taylor Instability: Synergistic Effects of Greenhouse Gas Cooling and Geomagnetic Field Secular Variation

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract Equatorial plasma bubbles (EPBs) are ionospheric irregularities generated by Rayleigh–Taylor instability (RTI) that disrupt satellite communications. We quantify secular change of RTI growth rates and isolate underlying drivers using WACCM‐X simulations.
Liying Qian, Chih‐Ting Hsu, Wenbin Wang, Shun‐Rong Zhang, Joseph McInerney   +4 more
wiley   +1 more source

The ultra-fast Kelvin waves in the equatorial ionosphere: observations and modeling [PDF]

Annales Geophysicae, 2013
The main purpose of this study is to investigate the vertical coupling between the mesosphere and lower thermosphere (MLT) region and the ionosphere through ultra-fast Kelvin (UFK) waves in the equatorial atmosphere.
A. N. Onohara, I. S. Batista, H. Takahashi   +2 more
doaj   +1 more source

Equatorial ionospheric bubble precursor [PDF]

Geophysical Research Letters, 2010
A time‐dependent nonlinear three‐dimensional model for the evolution of the equatorial bottomside lower ionosphere in the presence of dissipating gravity waves has been developed. From the numerical solution of the model, it is found that large bottomtype F‐region ionospheric density perturbations and electric fields can be driven by dissipating ...
openaire   +1 more source

A Radio Science Experiment for Dragonfly to Investigate Titan's Rotation and Interior Structure

Geophysical Research Letters, Volume 53, Issue 20, 28 October 2026.
Abstract NASA's mission Dragonfly to Titan is scheduled for launch in 2028 with arrival in 2034 to study Titan's prebiotic chemistry and habitability. We propose a radio science experiment for Dragonfly, in which radiometric tracking of the rotorcraft from the Deep Space Network, already baselined for communications and navigation, is used as a ...
Flavio Petricca, Dustin Buccino
wiley   +1 more source