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solar activity

Posted inEditors' Highlights

Imaging the Sun’s Atmosphere

by D. J. Knipp 2 November 201731 May 2022

The technique of heliospheric imaging could be valuable for future space weather operations.

Researchers trace long-term changes in the ionosphere back to Sun cycles, not greenhouse gas emissions.
Posted inResearch Spotlights

Is There a Greenhouse Effect in the Ionosphere, Too? Likely Not

by Mark Zastrow 13 October 201723 January 2023

Controversial observations of long-term changes in the ionosphere appear to be explained by the Sun’s 11-year cycle of activity, not human greenhouse gas emissions.

Posted inOpinions

To Understand Future Solar Activity, One Has to Know the Past

by A. A. Pevtsov and F. Clette 29 September 201718 January 2023

Short-term funding strategies present serious problems for programs like solar activity studies, where observations and analysis span decades or longer.

Researchers use 8 years of satellite data to test modeling of coronal mass injections
Posted inResearch Spotlights

NASA Fleet Helps Predict Space Weather

by S. Witman 21 September 201720 December 2021

Using 8 years of data collected via spacecraft, scientists produce hindcasts of plasma eruptions from the Sun. These will help improve forecasts.

Posted inNews

Largest Flare of Past 9 Years Erupts from Sun

by Kimberly M. S. Cartier 8 September 201731 May 2022

A massive flare and blast of charged particles toward Earth may disrupt satellites and communications and push auroras toward lower latitudes through tomorrow, according to space weather experts.

Artist’s illustration of events on the Sun changing the conditions in near-Earth space.
Posted inResearch Spotlights

For Magnetic Reconnection Energy, O—not X—Might Mark the Spot

by Mark Zastrow 10 April 201720 December 2021

A new analysis of satellite data could upend conventional wisdom about how solar storms produce their dangerous radiation—not from X-shaped mergers of magnetic field lines but from swirling vortices.

Understanding how solar storms subside will help to improve future forecasting
Posted inResearch Spotlights

Scientists Probe the Calm After Solar Storms

by Mark Zastrow 21 March 20174 May 2022

In forecasting the effects of solar storms, understanding how they subside—and not just how they arrive—will be crucial.

Researchers identify the role of plasma waves where the magnetic fields of Earth and the Sun interact.
Posted inResearch Spotlights

Plasma Waves Pinpointed at the Site of Magnetic Reconnection

by Mark Zastrow 17 February 201710 March 2022

When the Earth's and the Sun's magnetic fields meet, they realign in explosive and mysterious reconnections. Data suggest that plasma waves called kinetic Alfvén waves play a key role.

Scientists successfully simulate coronal mass ejections in their laboratory.
Posted inResearch Spotlights

Lab Experiment Tests What Triggers Massive Solar Eruptions

by Sarah Stanley 7 October 201631 May 2022

In a first-of-its-kind demonstration, scientists provide experimental support for a possible mechanism behind the formation of coronal mass ejections.

Jupiter-auroras-plasma-magnetic-field-interaction
Posted inResearch Spotlights

Jupiter's Auroras Recharge Between Solar Storms

by Mark Zastrow 21 September 20164 May 2022

New research suggests that Jupiter's magnetic field replenishes its stock of plasma during lulls in solar activity, creating spectacular displays when a solar storm hits.

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JGR: Solid Earth
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By Morgan Rehnberg

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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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