by Staff Writers
Greenbelt MD (SPX) Aug 13, 2014
At times, the sun erupts, hurling a magnetic superheated cloud of gas toward Earth. Racing at thousands of miles per second, and hundreds of times bigger than the sun, this cloud of solar particles can cause a magnetic storm near Earth, disrupting satellite communications and-in worse case scenarios-overloading power transformers.
Here on Earth, Dhaneshvaran Krishnarao monitors satellite footage for this type of activity. He started at NASA in 2013 as a space weather forecaster after his professor at American University recommended the internship. Krishnarao returned to NASA's Goddard Space Flight Center in Greenbelt, Maryland, to continue his work this summer.
"We'll be looking at images, like x-ray data and UV data," Krishnarao said.
"We monitor everything to see if something crosses a certain threshold. If it does, we would send out notifications for NASA robotic mission operators. Sometimes we respond to requests that the Air Force or other agencies would make to us."
Modern technology makes society more susceptible to the blackouts caused by solar storms. When struck by one of these huge clouds of solar material, called a coronal mass ejection, our planet's magnetic fields jostle back and forth.
As the atmosphere changes, GPS satellite frequencies that must pierce the ionosphere now betray exact coordinates by a couple of yards. For airplanes, military operations, farmers' vehicles, and financial transaction that rely on GPS, this can prove devastating.
Another type of eruption from the sun, called a solar flare, can interfere with shortwave radios. These low frequency radio waves use the ionosphere as a mirror to reflect transmissions around the globe; but during a solar storm, they simply disappear up into the sky-unable to bounce off of an atmosphere so changed by these storms.
But our technology also allows us to monitor these solar events and take necessary preparations. Goddard trains intern forecasters in a space weather boot camp for two weeks. During this orientation period, presentations and lecturers train the interns to study past space weather events so they would know how to respond to certain space weather events.
"I now forecast eight hours a week," Krishnarao said.
"The rest of the time, I work on a project to use preexisting spacecraft to monitor solar conditions. This new system will allow mission operators to select a spacecraft and ascertain the likelihood of different risks occurring."
Krishnarao hopes to continue working in astrophysics and heliophysics in grad school. He found the environment at NASA conducive to his education.
"They're really pushing us and encouraging us," Krishnarao said of his mentors. "They are our friends."
Goddard Space Flight Center
Solar Science News at SpaceDaily
|The content herein, unless otherwise known to be public domain, are Copyright 1995-2014 - Space Media Network. All websites are published in Australia and are solely subject to Australian law and governed by Fair Use principals for news reporting and research purposes. AFP, UPI and IANS news wire stories are copyright Agence France-Presse, United Press International and Indo-Asia News Service. ESA news reports are copyright European Space Agency. All NASA sourced material is public domain. Additional copyrights may apply in whole or part to other bona fide parties. Advertising does not imply endorsement, agreement or approval of any opinions, statements or information provided by Space Media Network on any Web page published or hosted by Space Media Network. Privacy Statement All images and articles appearing on Space Media Network have been edited or digitally altered in some way. Any requests to remove copyright material will be acted upon in a timely and appropriate manner. Any attempt to extort money from Space Media Network will be ignored and reported to Australian Law Enforcement Agencies as a potential case of financial fraud involving the use of a telephonic carriage device or postal service.|