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solar activity

Sunspots seen in February 2013
Posted inEditors' Vox

Hearing the Sun Tock

by C. T. Russell, L. K. Jian and J. G. Luhmann 25 October 201927 March 2023

The appearance of sunspots—their number, duration, and location—suggests that the dynamics of the Sun’s outer layer is synchronized with an internal clock.

A coronal mass ejection (CME) on 27 February 2000
Posted inNews

Forecasting Solar Storms in Real Time

Jenessa Duncombe, Staff Writer by Jenessa Duncombe 30 August 201931 May 2022

Predicting when solar storms will hit Earth remains a tricky business. To help, scientists can now submit their forecasts of coronal mass ejections online as they unfold in real time.

Black-and-white photo of round mines lined up on a ship’s deck
Posted inNews

Podcast: Space Weather and Global Policy

by S. M. Hanlon 19 August 201928 February 2023

In the latest episode of its Centennial series, AGU’s Third Pod from the Sun talks space weather and its influence on global policy with Delores Knipp.

Image of a solar prominence
Posted inNews

Moon Sheds Light on Early Solar Spin

Nola Taylor Redd, Science Writer by Nola Taylor Tillman 13 August 20197 March 2022

Lunar samples reveal that the Sun spun relatively slowly in its first billion years and blasted the Earth and Moon with coronal mass ejections.

An image of the Sun overlaid with magnetic field lines
Posted inNews

Planetary Low Tide May Force Regular Sunspot Sync Ups

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 21 June 201927 March 2023

A regular alignment of the planets—no, it’s not pseudoscience—makes a strong enough tug to regulate the Sun’s 11- and 22-year cycles.

An X8.2-class solar flare
Posted inResearch Spotlights

Solar Flares Increase Radiation Risk on Commercial Aircraft

by E. Underwood 18 April 201919 September 2022

A new study quantifies how space weather may affect polar transcontinental flight.

Space shuttle Endeavour in 2010 with a multihued view of Earth’s atmosphere layers
Posted inResearch Spotlights

The Thermosphere Responds to a Weaker Than Normal Solar Cycle

Aaron Sidder, freelance science writer by Aaron Sidder 5 April 201927 March 2023

Infrared emissions from nitric oxide and carbon dioxide in Earth’s upper atmosphere, which are closely tied to incoming solar radiation, are drastically lower than in the previous solar cycle.

Posted inEditors' Highlights

First Multi-Decade Simulation of the Earth’s Radiation Belt

by P. O’Brien 19 December 201827 March 2023

A new simulation of the Earth’s electron radiation belts captures large-scale variations over nearly three solar cycles, and replicates primary cyclical features and extreme behaviors.

A coronal loop of plasma travels along the Sun’s magnetic field lines
Posted inResearch Spotlights

Plasma Activity Around Sunspots May Foreshadow Solar Storms

Aaron Sidder, freelance science writer by Aaron Sidder 5 December 201831 January 2023

A new study identifies possible precursors to space weather in the regions encircling sunspots.

Jack Gosling at the Laboratory for Atmospheric and Space Physics, Space Sciences Building, at the University of Colorado Boulder
Posted inNews

John T. “Jack” Gosling (1938–2018)

by D. N. Baker, B. Feldman, D. McComas, S. Schwartz and M. Thomsen 26 September 20184 May 2022

This prolific researcher helped us understand the interactions of the solar wind and coronal mass ejections with Earth’s magnetic field.

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Features from AGU Journals

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“Collaboration Helps Overcome Challenges in Air Quality Monitoring”
By Muki Haklay

EDITORS' VOX
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“What We Know and Don’t Know About Climate Tipping Elements”
By Seaver Wang

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