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Heliophysics at AGU Fall 2010
Monday, Dec. 13, 1pm EST (10 am PST)

From the Sun to Earth: The 1 August 2010 Solar Event

Related Sessions: SH13A, SH21C, SH23A

New observations of the Sun indicate that the search for the factors that play a role in the initiation and evolution of eruptive and explosive events, sought after for improved space-weather forecasting, requires knowledge of much, if not all, of the solar surface field. The combination of SDO and STEREO observations enable us to view much of the solar surface and atmosphere simultaneously and continuously.

  • Madhulika Guhathakurta, program scientist, SDO and STEREO missions, NASA Headquarters, Washington
  • Alan Title, Lockheed Martin, principal investigator, SDO/AIA, Lockheed Martin Advanced Technology Center, Palo Alto, Calif.
  • Karel Schrijver, lead scientist, SDO/AIA, Lockheed Martin Advanced Technology Center, Palo Alto, Calif.
  • Rodney Viereck, director of research, NOAA Space Weather Prediction Center, Boulder, Colo.
Related Links:
› Link to Briefing Materials
› Link to Feature Story

Monday, Dec 13

Pulsating aurora image taken on Oct 30, 2008 in Laukvik, Lofoten Islands, Norway. › View larger
Pulsating aurora image taken on Oct 30, 2008 in Laukvik, Lofoten Islands, Norway. Credit: Jan Koeman

Yukitoshi Nishimura will present the first experimental technique to describe the geometry of Earth's constantly changing magnetic field. The presentation will show how the correlation between a special kind of aurora and chorus waves – electromagnetic waves high in Earth's magnetosphere that sound like birds chirping when played through a speaker – can provide this measurement by mapping magnetic field lines from distant space to a unique point on the ground. Pulsating auroras are beautiful emissions that blink in the atmosphere up to 12 times per minute. Earlier work based on observations both from NASA's THEMIS spacecraft and from the ground solved the mystery of how the pulsating auroras were formed -- the spectacular light shows were driven by chorus waves observed deep in space. Now Nishimura will discuss an extended survey of over 40 chorus wave/pulsating aurora conjunctions, and the lessons learned from this novel technique that links aurora in the ionosphere to a location over 40,000 km away in the magnetosphere. (Presentation SM14B-02)

Friday, Dec 17

CCMC model of the magnetopause position on Dec 12, 2010 at 18:31:11 UT. › View larger
CCMC model of magnetopause postion on Dec 6, 2010 at 18:31:11 UT. Credit: NASA/CCMC

As we approach the solar maximum we face an increased risk of solar storm damage to satellites and radio communication systems. The US Air Force Weather Agency, which provides round-the-clock space weather watch for the Department of Defense, and NASA's Space Weather Services at the Community Coordinated Modeling Center (CCMC) at Goddard Space Flight Center have just begun to collaborate to improve their space weather forecasts. Both organizations benefit from the other's expertise. CCMC offers the Air Force access to state-of-the-art models to forecast the travel path of solar storms from the solar corona to the Earth's upper atmosphere. The Air Force Weather Agency, in turn, gives CCMC up to the minute alerts as needed to support their mandate to provide solar weather warnings to NASA's robotic mission fleet. Presentations by GSFC's Michael Hesse and USAF's Joseph Reich. (Posters: SM51A-1746, SM51A-1747)

More about CCMC: http://ccmc.gsfc.nasa.gov/

AGU Fall 2010 promo