Sun  ID: 3211

Space Weather Forecasting: Quiet Times Ahead

Visualizations by Tom Bridgman Released on August 16, 2005
SOHO/MDI magnetograms combined with the Potential-Field Source-Surface (PFSS) model can be used to generate a model of magnetic field lines in the lower part of the solar corona. When these models are compared to the loops visible in TRACE imagery, a good match (as in this case) indicates that the region will not generate flare events over the next few days.
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This movie zooms in to the solar surface then fades to a time varying magnetogram. The PFSS model is overlaid on the source magnetic field, then compared to the TRACE loops. Following the region for several days, we see no flare events.
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A full-disk view of the Sun.
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A magnetogram closeup view of an active region. White indicates north magnetic polarity, black is south.
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Overlay of the PFSS model on the active region.
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In this case, we see the PFSS model matches the TRACE coronal loops very well.
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The region continues to show changes...
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but over two days later, no flares have occurred.

For More Information

http://www.nasa.gov/vision/universe/solarsystem/clear_weather_feature.html

Visualization Credits

Tom Bridgman (Global Science and Technology, Inc.): Lead Animator
Carolus J. Schrijver (LMSAL): Scientist
Marc L. DeRosa (LMSAL): Scientist
William Steigerwald (NASA/GSFC): Writer
Please give credit for this item to:
NASA/Goddard Space Flight Center Scientific Visualization Studio

Short URL to share this page:
https://svs.gsfc.nasa.gov/3211

Missions:
SOHO
TRACE

Data Used:
PFSS/Magnetic Field Lines also referred to as: PFSS
Model - NASA and ESA - 2001/03/15T00:00:09
This model generated from SOHO/MDI magnetograms through the SolarSoft package.
view all stories where this data set is used
SOHO/Michelson Doppler Interferometer (MDI)/Magnetogram
NASA and ESA - 2001/03/07T15:59:01-2001/03/15T00:00:01
view all stories where this data set is used
SOHO/Michelson Doppler Interferometer (MDI)/Continuum
NASA and ESA - 2001/03/06T23:59:31-2001/03/09T11:11:31
view all stories where this data set is used
TRACE/Optical Telescope/171 Angstroms
2001/03/15T01:34:57-2001/03/17T22:07:41
view all stories where this data set is used
Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.

This item is part of this series:
Space Weather Forecasting

Goddard TV Tape:
G2005-060

Keywords:
SVS >> Magnetic Fields
SVS >> SOHO
DLESE >> Space science
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity
GCMD >> Earth Science >> Sun-earth Interactions >> Solar Activity >> Solar Active Regions
SVS >> Space Weather
SVS >> TRACE
NASA Science >> Sun

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version 8.0.0.0.0