Results 101 to 110 of about 408,077 (211)

Impact of Realistic Detector Response and Azimuthal Drift on the Quantification of Energetic Electron Precipitation Using POES/MetOp

open access: yesGeophysical Research Letters, Volume 53, Issue 19, 16 October 2026.
Abstract Quantifying energetic electron precipitation is essential for understanding ring current and radiation belt loss, as well as magnetosphere‐ionosphere‐atmosphere coupling. The count rate ratio between the 90° and 0° telescopes (CR90/CR0) on POES/MetOp satellites is a commonly used proxy for precipitation and pitch‐angle diffusion rates (DW ${D ...
Weichao Tu, Zhi‐Gu Li
wiley   +1 more source

Assessing Co‐Located NISAR and Sentinel‐1 Observations for Atmospheric Characterization

open access: yesJournal of Geophysical Research: Atmospheres, Volume 131, Issue 19, 16 October 2026.
Abstract Tropospheric delay remains one of the largest sources of uncertainty in repeat‐pass Interferometric Synthetic Aperture Radar (InSAR) measurements, while accurate three‐dimensional deformation retrieval continues to be limited by the geometry of current spaceborne SAR systems.
Shadi Oveisgharan   +3 more
wiley   +1 more source

Rocket Observations of the Lower Ionosphere in the 12th-14th Japanese Antarctic Research Expeditions (1971-1973)

open access: yesAntarctic Record, 1975
The 12th, 13th and 14th Japanese Antarctic Research Expedition parties (1971-73), carried out firings of twenty-one rockets to observe the polar ionosphere and auroral phenomena at Syowa Station(69°00'S, 39°35'E; geomagnetic lat. 69.6°S, long.
Shigeru MIYAZAKI
doaj   +1 more source

GPS scintillation effects associated with polar cap patches and substorm auroral activity: direct comparison

open access: yesJournal of Space Weather and Space Climate, 2014
We directly compare the relative GPS scintillation levels associated with regions of enhanced plasma irregularities called auroral arcs, polar cap patches, and auroral blobs that frequently occur in the polar ionosphere.
Jin Yaqi   +2 more
doaj   +1 more source

Ionosphere-thermosphere (IT) response to solar wind forcing during magnetic storms

open access: yesJournal of Space Weather and Space Climate, 2016
During magnetic storms, there is a strong response in the ionosphere and thermosphere which occurs at polar latitudes. Energy input in the form of Poynting flux and energetic particle precipitation, and energy output in the form of heated ions and ...
Huang Cheryl Yu-Ying   +5 more
doaj   +1 more source

Three-dimensional metal ion flow in the polar ionosphere simulated by a new ionospheric model

open access: yesJournal of Space Weather and Space Climate
The temporal evolution of the three-dimensional metal ion flow (MIF) is crucial for polar sporadic E layer dynamics. Yet, until now it has not been studied in detail.
Andoh Satoshi   +4 more
doaj   +1 more source

The Semidiurnal Tidal Response of the Low Latitude Ionosphere to Northern Hemisphere Polar Vortex Strength (2020–2023) From COSMIC‐2 Global Ionospheric Specification

open access: yesGeophysical Research Letters
This paper investigates the day‐to‐day global tidal variability in the ionosphere/thermosphere system due to fluctuations in the strength of the northern hemisphere stratospheric polar vortex.
Deepali Aggarwal   +3 more
doaj   +1 more source

Thermally excited 630.0 nm emissions in the polar ionosphere [PDF]

open access: yes, 2018
This thesis investigates the importance and significance of thermally excited 630.0 nm emissions in the cusp and polar ionosphere. Thermal excitation by heated ambient electrons in the cusp and polar ionosphere is a rarely studied source of 630.0 nm ...
Kwagala, Norah Kaggwa
core  

Stare radar views polar ionosphere

open access: yesEos, Transactions American Geophysical Union, 1978
The ionosphere serves as a closure path for electrical currents flowing from one part of the magnetosphere to another. How this happens is shown in detail by recent work of R. A. Greenwald at the Max Planck Institute, using the Scandinavian twin auroral radar experiment (Stare).
openaire   +1 more source

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