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Journal of Geophysical Research: Space Physics

Artist’s conception of the motion of charged particles in Earth’s magnetosphere
Posted inResearch Spotlights

A New Approach to Characterizing Space Plasmas

by Morgan Rehnberg 16 December 202013 October 2022

When plasma particle velocity distributions have multiple, distinct parts, treating each as a separate beam may yield more intuitive results.

Two plots showing percent changes in TIME-GCM zonally averaged [O+] and [H+] as a function of latitude and altitude in the Northern Hemisphere between the “disturbed” and “pre-disturbance” time periods in 2012–2013
Posted inEditors' Highlights

Stratospheric Weather Impacts Light Species at Great Heights

by Michael P. Hickey 14 December 202017 January 2023

Sudden stratospheric warmings in the high latitude wintertime can drive changes in light species (H, He and O) all the way though the thermosphere, likely influencing ion densities in the exosphere.

A thin layer of green aurorae glows on the horizon above Earth in a photo taken from the International Space Station.
Posted inResearch Spotlights

Drivers of Upper Atmosphere Climate Change

by Sarah Stanley 8 December 202017 June 2022

New research confirms the influence of carbon dioxide on long-term temperature trends in the upper atmosphere, but changes in Earth’s magnetic field also play a key role.

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

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 202021 October 2021

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.

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 202027 January 2022

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.

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Features from AGU Journals

RESEARCH SPOTLIGHTS
JGR: Solid Earth
“New Tectonic Plate Model Could Improve Earthquake Risk Assessment”
By Morgan Rehnberg

EDITORS' HIGHLIGHTS
AGU Advances
“Eminently Complex – Climate Science and the 2021 Nobel Prize”
By Ana Barros

EDITORS' VOX
Perspectives of Earth and Space Scientists
“New Directions for Perspectives of Earth and Space Scientists”
By Michael Wysession


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