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space weather (hazard)

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

Kimberly M. S. Cartier, News Writing and Production Intern for Eos.org by Kimberly M. S. Cartier 8 September 201727 March 2023

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.

Researchers unravel the mystery of an anomaly in Earth’s ionosphere
Posted inResearch Spotlights

Auroras May Explain an Anomaly in Earth’s Ionosphere

by E. Underwood 7 August 201723 January 2023

A new study finds that the ionospheric anomaly over the Weddell Sea is likely influenced by proximity to auroral energy input, rather than by tilting magnetic fields.

New research unveils how geomagnetic storms influence Earth’s geocorona
Posted inResearch Spotlights

How Geomagnetic Storms Light Up the Geocorona

Leah Crane by L. Crane 14 July 201713 April 2022

After geomagnetic storms, Earth’s corona abruptly increases in hydrogen density. For the first time, serendipitous observations have allowed researchers to investigate why.

Researchers use satellite data to spot how plasma waves affect the Van Allen radiation belts around Earth
Posted inResearch Spotlights

How “Whistling” Plasma Waves Shape Earth’s Radiation Belts

by Mark Zastrow 2 June 20171 March 2023

The Van Allen radiation belts surrounding Earth shrink and swell due to plasma waves moving through them, an analysis of satellite data suggests.

An aurora glows above Tromso, Norway, in 2010.
Posted inNews

Mining Ancient Texts Reveals Clues to Space Weather of Yore

Tim Hornyak, Science Writer by Tim Hornyak 24 May 201718 April 2022

Low-latitude sightings of colorful hues in the sky likely to have been auroras indicate powerful geomagnetic storms buffeted Earth when some old chronicles were written, researchers report.

The impact of solar storms on power grids might be determined by the conductivity of the ground.
Posted inResearch Spotlights

Ground Surveys Reveal Space Weather Risk to Spain’s Power Grid

by Mark Zastrow 23 May 201713 October 2021

A survey of bedrock conductivity across Spain improves predictions of how vulnerable the nation’s power grid is to solar storms.

A rendering of the sunset from space.
Posted inScience Updates

Integrating Research of the Sun-Earth System

by V. K. Jordanova, J. E. Borovsky and V. T. Jordanov 2 May 20174 May 2022

International Symposium on Recent Observations and Simulations of the Sun-Earth System III; 11–16 September 2016, Varna, Bulgaria

Coronal mass ejection.
Posted inScience Updates

Predictive Capability for Extreme Space Weather Events

by A. S. Sharma, E. E. Kalnay and M. Bonadonna 26 April 201722 April 2022

Workshop on Modeling and Prediction of Extreme Space Weather Events; College Park, Maryland, 22–24 August 2016

The Sun’s magnetic field lines, shown here using a model, can further twist and loop after they encounter near-Earth space.
Posted inResearch Spotlights

Explaining Unexpected Twists in the Sun's Magnetic Field

by Mark Zastrow 4 April 201718 July 2023

New research shows how the Sun's magnetic field can shift when it approaches Earth, which can throw off space weather forecasts.

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