Geomagnetic Storms

Geomagnetic Storms News -- ScienceDaily Latest research news on geomagnetic storms and solar flares including risks to electrical grids, astronauts, satellites and more.

  • Satellites more at risk from fast solar wind than a major space storm
    on September 4, 2018 at 2:32 pm

    Satellites are more likely to be at risk from high-speed solar wind than a major geomagnetic storm according to a new study. […]

  • New technique to forecast geomagnetic storms developed
    on August 29, 2018 at 3:54 pm

    Flashes of brightness known as solar flares can be followed by coronal mass ejections that send plasma from the sun into space. These charged particles can then travel to Earth, and when they arrive they wreak havoc on Earth's magnetic field. The result can be beautiful but also destructive: auroras and geomagnetic storms. Researchers now report a method for analyzing magnetic field data that might provide better short-term forecasting of geomagnetic storms. […]

  • Historic space weather could clarify what's next
    on August 13, 2018 at 3:33 pm

    Scientists have discovered an underlying repeatable pattern in how space weather activity changes with the solar cycle - having analysed solar activity for the last half century. […]

  • Satellite measurements of the Earth's magnetosphere promise better space weather forecasts
    on August 9, 2018 at 1:34 pm

    A Japan-based research team led by Kanazawa University equipped the Arase satellite with sensors to study the convoluted interactions between high-energy particles in the inner magnetosphere and the Earth's electric and magnetic field. They have collected their first set of data from the satellite and from ground-based sensors, which they will soon analyze. Their approach promises to provide better predictions of harmful bursts of high-energy particles from the magnetosphere. […]

  • Solar flares disrupted radio communications during September 2017 Atlantic hurricanes
    on July 30, 2018 at 6:54 pm

    An unlucky coincidence of space and Earth weather in early September 2017 caused radio blackouts for hours during critical hurricane emergency response efforts, according to a new study. The new research, which details how the events on the Sun and Earth unfolded side-by-side, could aid in the development of space weather forecasting and response, according to the study's authors. […]

  • How does the sun's rotational cycle influence lightning activity on earth?
    on July 17, 2018 at 1:47 pm

    A collaborative research team has taken the first steps to understanding how the sun's rotational cycle influences lightning activity. They found answers in an unusual source -- diaries dating back to the 1700s. […]

  • How Earth slows the solar wind to a gentle breeze
    on May 31, 2018 at 5:11 pm

    A new study describes the first observations of the process of electron heating in Earth's bow shock. The researchers found that when the electrons in the solar wind encounter the bow shock, they momentarily accelerate to such a high speed that the electron stream becomes unstable and breaks down. This breakdown process robs the electrons of their high speed and converts the energy to heat. […]

  • The case of the relativistic particles solved with NASA missions
    on May 29, 2018 at 6:09 pm

    Encircling Earth are two enormous rings -- called the Van Allen radiation belts -- of highly energized ions and electrons. Various processes can accelerate these particles to relativistic speeds, which endanger spacecraft unlucky enough to enter these giant bands of damaging radiation. Scientists had previously identified certain factors that might cause particles in the belts to become highly energized, but they had not known which cause dominates. […]

  • New magnetic process in turbulent space
    on May 9, 2018 at 5:54 pm

    Explorations in Earth's space environment by NASA's Magnetospheric Multiscale spacecraft have discovered a surprising new magnetic event in turbulent plasma. […]

  • Earth's magnetic field is not about to reverse
    on April 30, 2018 at 8:04 pm

    A study of the most recent near-reversals of the Earth's magnetic field by an international team of researchers has found it is unlikely that such an event will take place anytime soon. […]

  • New 3-D measurements improve understanding of geomagnetic storm hazards
    on March 8, 2018 at 6:33 pm

    Measurements of the three-dimensional structure of Earth, as opposed to the one-dimensional models typically used, can help scientists more accurately determine which areas of the United States are most vulnerable to blackouts during hazardous geomagnetic storms. […]

  • Towards a better prediction of solar eruptions
    on February 7, 2018 at 7:03 pm

    Just one phenomenon may underlie all solar eruptions. Researchers have identified the presence of a confining 'cage' in which a magnetic rope forms, causing solar eruptions. It is the resistance of this cage to the attack of the rope that determines the power and type of the upcoming flare. This work has enabled the scientists to develop a model capable of predicting the maximum energy that can be released during a solar flare. […]

  • Reduced energy from the sun might occur by mid-century: Now scientists know by how much
    on February 6, 2018 at 3:58 pm

    The Sun might emit less radiation by mid-century, giving planet Earth a chance to warm a bit more slowly but not halt the trend of human-induced climate change. […]

  • Special star is a Rosetta Stone for understanding the sun's variability and climate effect
    on January 5, 2018 at 5:40 pm

    Scientists have found a star that can help shed light on the physics underlying the solar dynamo. Researchers combined observations from the Kepler spacecraft with ground-based observations as far back as 1978, thereby reconstructing a 7.4-year cycle in this star. The star is almost identical to the Sun, except for the chemical composition. That makes it a Rosetta Stone for the study of stellar dynamos. […]

  • Extreme magnetic storm: Red aurora over Kyoto in 1770
    on October 3, 2017 at 3:10 pm

    Researchers used historic accounts of a rare red aurora over Kyoto, Japan, in the 18th century to support calculations of the strength of the associated magnetic storm. The September 1770 storm could be 3-10% stronger than the September 1859 storm, the greatest storm in the past 200 years. The research provides insights that could assist preparation for an unlikely, but possible, future intense magnetic storm. […]

  • Solar observer created key sunspot record
    on October 2, 2017 at 6:49 pm

    Few people have heard of Hisako Koyama, but the dedicated female solar observer, born in Tokyo in 1916, created one of the most important sunspot records of the past 400 years. […]

  • Spoiler alert: Computer simulations provide preview of upcoming eclipse
    on August 18, 2017 at 1:21 pm

    Scientists have forecast the corona of the sun during the upcoming eclipse. The findings shed light on what the eclipse of the sun might look like Aug. 21 when it will be visible across much of the US, tracing a 70-mile-wide band across 14 states. […]

  • Day to night and back again: Earth's ionosphere during the total solar eclipse
    on August 10, 2017 at 6:57 pm

    Three NASA-funded studies will use the Aug. 21 total solar eclipse as a ready-made experiment, courtesy of nature, to improve our understanding of the ionosphere and its relationship to the Sun. […]

  • Solving the mystery of the sun's hot atmosphere
    on August 3, 2017 at 1:19 pm

    The elemental composition of the Sun's hot atmosphere known as the 'corona' is strongly linked to the 11-year solar magnetic activity cycle, a team of scientists has revealed for the first time. […]

  • Improved representation of solar variability in climate models
    on July 3, 2017 at 4:10 pm

    For upcoming climate model studies, scientists can use a new, significantly improved data set for solar forcing. Scientists have now published the details of the new reconstruction of this reference dataset. A significantly enhanced influence of solar cycle effects is expected, particularly in the stratosphere. […]

  • First direct exploration of magnetic fields in the upper solar atmosphere
    on May 18, 2017 at 2:41 pm

    Scientists have explored the magnetic field in upper solar atmosphere by observing the polarization of ultraviolet light with the CLASP sounding rocket experiment during its 5-minute flight in space on Sept. 3, 2015. The data show that the structures of the solar chromosphere and transition region are more complicated than expected. It is proven that ultraviolet spectropolarimetry can be used in future investigations of the magnetic fields in upper solar chromosphere and transition region. […]

  • Space weather events linked to human activity
    on May 17, 2017 at 3:16 pm

    Human activities, like nuclear tests and radio transmissions, have been changing near-Earth space and weather, and have created artificial radiation belts, damaged satellites and induced auroras. […]

  • Key differences in solar wind models
    on May 15, 2017 at 4:59 pm

    The challenge of predicting space weather, which can cause issues with telecommunications and other satellite operations on Earth, requires a detailed understanding of the solar wind (a stream of charged particles released from the sun) and sophisticated computer simulations. New research has found that when choosing the right model to describe the solar wind, using the one that takes longer to calculate does not make it the most accurate. […]

  • Planetary waves, first found on Earth, are discovered on sun
    on March 27, 2017 at 3:44 pm

    The same kind of large-scale planetary waves that meander through the atmosphere high above Earth's surface may also exist on the sun, according to a new study. […]

  • New data from NOAA GOES-16's Space Environment In-Situ Suite (SEISS) instrument
    on February 13, 2017 at 1:37 pm

    The new Space Environment In-Situ Suite (SEISS) instrument onboard NOAA's GOES-16 is working and successfully sending data back to Earth. […]

  • What happened to the sun over 7,000 years ago?
    on February 7, 2017 at 2:27 pm

    By analyzing the level of a carbon isotope in tree rings from a specimen of an ancient bristlecone pine, researchers have revealed that the sun exhibited a unique pattern of activity in 5480 BC. By comparing this event with other similar but more recent phenomena, they reported that this event may have involved a change in the sun's magnetic activity, or a number of successive solar burst emissions. […]

  • First-ever GPS data release to boost space-weather science
    on January 30, 2017 at 4:10 pm

    Today, more than 16 years of space-weather data is publicly available for the first time in history. The data comes from space-weather sensors. […]

  • Extreme space weather-induced blackouts could cost US more than $40 billion daily
    on January 18, 2017 at 3:38 pm

    The daily US economic cost from solar storm-induced electricity blackouts could be in the tens of billions of dollars, with more than half the loss from indirect costs outside the blackout zone, according to a new study. […]

  • Revolutions in understanding the ionosphere, Earth's interface to space
    on December 14, 2016 at 8:16 pm

    Far above Earth's surface is a sea of particles that have been split into positive and negative ions by the suns harsh ultraviolet radiation called the ionosphere -- this is Earth's interface to space. […]

  • Researchers dial in to 'thermostat' in Earth's upper atmosphere
    on December 14, 2016 at 8:15 pm

    A team has found the mechanism behind the sudden onset of a 'natural thermostat' in Earth's upper atmosphere that dramatically cools the air after it has been heated by violent solar activity. […]