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Journal of Geophysical Research: Space Physics

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Jupiter as seen by the Juno spacecraft on 17 February 2020
Posted inResearch Spotlights

A Juno Era Model of the Jovian Magnetosphere

by Morgan Rehnberg 9 November 202020 July 2022

Updating a model developed during the Voyager flybys will enable better mission planning and a deeper understanding of Juno data.

Image of part of Mars showing the planet’s atmosphere on the horizon
Posted inResearch Spotlights

Capturing Heat-Driven Atmospheric Tides on Mars

Sarah Stanley, Science Writer by Sarah Stanley 13 October 202023 September 2022

Spacecraft observations and model simulations provide new insights into tidal patterns that transport momentum and energy into the planet’s upper atmosphere.

Radio towers at the VLF Transmitter Cutler in Maine
Posted inResearch Spotlights

Terrestrial Radio Signals May Suppress High-Energy Electrons

by Morgan Rehnberg 12 October 202018 January 2023

Naval radio signals may cause the formation of a barrier observed during geomagnetic storms that is seemingly impenetrable by relativistic electrons.

Satellite image of gravity waves in tropospheric clouds off southern Australia in 2017
Posted inResearch Spotlights

Successfully Simulating Atmospheric Gravity Waves

by Morgan Rehnberg 30 September 202019 October 2021

These waves are key to moving energy from the troposphere to the thermosphere, but until now they haven’t been well described at high altitudes in computer models.

Plot showing the monthly averaged column abundances of Nickel as a function of season and month, simulated by the WACCM-Ni model
Posted inEditors' Highlights

First Model of Meteoric Nickel in the Upper Atmosphere

by Michael P. Hickey 31 August 202016 March 2023

A layer of nickel of cosmic origin, which exists between 80 and 110 km high in Earth’s atmosphere, has been modeled for the first time, including dynamics and complex neutral and ion chemistry.

Illustration of “expanding,” “contracting,” and “stable‐propagating” magnetic dip structures
Posted inEditors' Highlights

Upstream Propagating Magnetic Dips in the Magnetosheath

by M. Balikhin 28 July 202010 March 2022

The previous consensus that magnetic dips in the magnetosheath can be attributed to non-propagating mirror waves is now shown to be oversimplified.

Plumes of ice particles erupt from the surface of Enceladus in an image from the Cassini spacecraft
Posted inResearch Spotlights

Electron Density near Enceladus Shows Orbital Variation

by Morgan Rehnberg 24 June 202010 February 2023

The electron density peaks well after the activity of the moon’s distinctive south polar ice plume reaches its maximum, but the cause of the lag remains puzzling.

Graphic showing what the JEDI instrument can see of Io and Europa from its trajectory
Posted inEditors' Highlights

New Energetic Neutral Atom Emissions from Jupiter, Io, and Europa

by Viviane Pierrard 15 June 202011 April 2023

The first Jovian off-equator Energetic Neutral Atom viewings reveal distinct emissions from Jupiter and the orbits of Io and Europa: Energetic particle injections surprisingly occur inside Io’s orbit.

Collage of space physics images
Posted inEditors' Vox

JGR: Space Physics Seeks Submissions on Underrepresented Topics

by M. Balikhin 3 June 202012 January 2023

Under a new editor in chief, the Journal of Geophysical Research: Space Physics is encouraging more scientific papers on space instrumentation, numerical models, and solar physics.

Side-by-side illustrations of a Martian horizon featuring a dry landscape and a wet landscape
Posted inResearch Spotlights

How Mars’s Magnetic Field Let Its Atmosphere Slip Away

by Mark Zastrow 31 March 202010 February 2023

A planet’s magnetic field usually protects its atmosphere from being blown away by its star. But new research suggests Mars’s weak magnetic field may have helped its atmosphere escape.

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