Previous Animation Next Animation Space Weather Forecasting: Active Times Ahead 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 bad match (as in this case) indicates that the region will generate flare events over the next few days.    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 a major flare event. Duration: 27.0 seconds Available formats:   320x240 (30 fps) MPEG-1   3 MB   640x480 (30 fps) MPEG-1   14 MB   720x480 (29.97 fps) MPEG-2   23 MB   320x240     JPEG         18 KB   720x480 (30 fps) Frames   320x240 (30 fps) X-FLV       881 KB How to play our movies    A full-disk view of the Sun Available formats:   2560 x 1920     TIFF 2 MB   320 x 240         JPEG     22 KB    A magnetogram closeup view of an active region. White indicates north magnetic polarity, black is south. Available formats:   2560 x 1920     TIFF 4 MB   320 x 240         JPEG     45 KB    Overlay of the PFSS model on the active region. Available formats:   2560 x 1920     TIFF 6 MB   320 x 240         JPEG     75 KB    The PFSS model is a poor match for the TRACE coronal loops. Available formats:   2560 x 1920     TIFF 7 MB   320 x 240         JPEG     76 KB   160 x 80           PNG       35 KB   80 x 40             PNG         9 KB    A very bright flare event occurs within twelve hours. Available formats:   2560 x 1920     TIFF 8 MB   320 x 240         JPEG     67 KB    The region continues to show activity. Available formats:   2560 x 1920     TIFF 5 MB   320 x 240         JPEG     60 KB    The region continues to show strong changes. Available formats:   2560 x 1920     TIFF 4 MB   320 x 240         JPEG     49 KB Animation Number: 3212 Completed: 2005-08-16 Animator: Tom Bridgman (GST) (Lead) Scientists: Carolus J. Schrijver (LMSAL)   Marc L. DeRosa (LMSAL) Writer: William Steigerwald (NASA/GSFC) Platforms/Sensors/Data Sets: PFSS/Magnetic Field Lines (2000/07/14T00:55:00)   SOHO/Michelson Doppler Interferometer (MDI)/Magnetogram (2000/07/08T14:24:01-2000/07/13T23:59:01)   SOHO/Michelson Doppler Interferometer (MDI)/Continuum (2000/07/07T23:59:31-2000/07/10T11:11:31)   TRACE/195 Angstroms (2000/07/14T00:17:12-2000/07/17T22:24:21) Data Collected: PFSS: 2000/07/14T00:55:00, TRACE 195A: 2000/07/14T00:17:12-2000/07/17T22:24:21, MDI Continuum: 2000/07/07T23:59:31-2000/07/10T11:11:31, MDI Magnetogram: 2000/07/08T14:24:01-2000/07/13T23:59:01 Series: Space Weather Forecasting Keywords: SVS >> Magnetic Fields SVS >> Solar Active Region DLESE >> Space science GCMD >> EARTH SCIENCE >> Sun-earth Interactions >> Solar Activity GCMD >> EARTH SCIENCE >> Sun-earth Interactions >> Solar Activity >> Solar Active Regions GCMD >> EARTH SCIENCE >> Sun-earth Interactions >> Solar Activity >> Solar Flares SVS >> Space Weather More Information on this topic available at: http://www.nasa.gov/vision/universe/solarsystem/clear_weather_feature.html     Please give credit for this item to: NASA/Goddard Space Flight Center Scientific Visualization Studio Back to Top

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