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Posts Tagged ‘solar storms’

UK Leads New International Solar Storm Tracking Initiative

October 2, 2014 Leave a comment

UK scientists have unveiled a new £2.5 million (€3.2 million) project that will improve forecasts of solar storms, including their arrival time and impact on the Earth. The three year project will provide the most comprehensive set of information to date about the Sun’s influence on interplanetary space and the effects space weather can have on the Earth. The project will enable governments to improve their strategies to lessen the potential negative impacts from the Sun.

Link To Full Story

Solar Eruptions Cause Sunquakes

April 2, 2012 1 comment

A study led by UCL’s Mullard Space Science Laboratory has shown for the first time that sunquakes can be produced during eruptions of magnetic field and charged particles, as the immense magnetic structure blasts off into the Solar System. The results will be presented by Dr Sergei Zharkov at the National Astronomy Meeting 2012 in Manchester on Friday 30th March 2012.

The first observation of a sunquake was reported by Kosovichev & Zharkova in the late 1990s. During the last decade it has become well established that explosions in the Sun’s atmosphere, known as solar flares, can create sunquakes through the impact of powerful beams of particles which travel into the Sun. This new study shows that eruptions of material known as coronal mass ejections are also able to produce sunquakes.

Full Story: http://www.jodrellbank.manchester.ac.uk/meetings/nam2012/pressreleases/nam16.html

Huge Tornadoes Discovered on the Sun


Solar tornadoes several times as wide as the Earth can be generated in the solar atmosphere, say researchers in the UK. A solar tornado was discovered using the Atmospheric Imaging Assembly (AIA) telescope on board the Solar Dynamic Observatory (SDO) satellite. A movie of the tornado will be presented at the National Astronomy Meeting 2012 in Manchester on Thursday 29th March.

“This is perhaps the first time that such a huge solar tornado is filmed by an imager. Previously much smaller solar tornadoes were found my SOHO satellite. But they were not filmed,” says Dr. Xing Li, of Aberystwyth University.

Dr. Huw Morgan, co-discover of the solar tornado, adds, “This unique and spectacular tornado must play a role in triggering global solar storms.”

Full Story: http://www.jodrellbank.manchester.ac.uk/meetings/nam2012/pressreleases/nam14.html

Spacecraft Observe Impact of Powerful Solar Storm

March 28, 2012 Leave a comment

For the first time, instrumentation aboard two NASA missions operating from complementary vantage points watched as a powerful solar storm spewed a two million-mile-per-hour stream of charged particles and interacted with the invisible magnetic field surrounding Earth, according to a paper published today in the Journal of Geophysical Research.

The spacecraft, NASA’s Two Wide-angle Imaging Neutral-atom Spectrometers (TWINS) and Interstellar Boundary Explorer (IBEX), observed the impact from inside and outside the Earth’s magnetosphere, respectively. The energetic neutral atom (ENA) cameras aboard each spacecraft enabled global imaging of the magnetosphere, the invisible bubble that protects Earth from the majority of charged particles from the Sun, as it compressed in response to sharply faster solar wind.

The storm, observed April 5, 2010, also is thought to have caused an important communications satellite, Galaxy-15, to founder and drift, taking almost a year to return to its station.

Full Story: http://www.swri.org/press/2012/twins-ibex.htm#axzz1qT8kzuQ2

Improved Forecasting to Coincide with Peak in Solar Activity

January 27, 2012 Leave a comment

After years of relative somnolence, the sun is beginning to stir. By the time it’s fully awake in about 20 months, the team at NASA’s Goddard Space Flight Center in Greenbelt, Md., charged with researching and tracking solar activity, will have at their disposal a greatly enhanced forecasting capability.

Goddard’s Space Weather Laboratory recently received support under NASA’s Space Technology Program Game Changing Program to implement “ensemble forecasting,” a computer technique already used by meteorologists to track potential paths and impacts of hurricanes and other severe weather events.

Instead of analyzing one set of solar-storm conditions, as is the case now, Goddard forecasters will be able to simultaneously produce as many as 100 computerized forecasts by calculating multiple possible conditions or, in the parlance of Heliophysicists, parameters. Just as important, they will be able to do this quickly and use the information to provide alerts of space weather storms that could potentially be harmful to astronauts and NASA spacecraft.

Full Story: http://www.nasa.gov/mission_pages/sunearth/news/ensemble-forecasting.html

Ultrafast Substorm Auroras Explained

September 7, 2011 Leave a comment

From time to time, sudden releases of energy in Earth’s magnetosphere lead to major disturbances that result in bright auroral displays over the planet’s polar regions. These auroras are caused by a phenomenon known as a geomagnetic substorm. The precise cause of these substorms has been debated for decades, but new computer simulations, allied to analysis of data from ESA’s Cluster spacecraft, are now filling in many of the missing pieces in the puzzle.

Full Story: http://sci.esa.int/science-e/www/object/index.cfm?fobjectid=49107