Quantitative Study of Solar Farside Observations to Predict Active Regions

Details Quantitative Study of Solar Farside Observations to Predict Active Regions Quantitative Study of Solar Farside Observations to Predict Active Regions

Dec 2006

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2006agufmsh33b0412b&link_type=abstract

American Geophysical Union, Fall Meeting 2006, abstract #SH33B-0412

Physics

7522 Helioseismology, 7524 Magnetic Fields

Scientific paper

Estimates of sunspots on the far side of the Sun have been obtained for several years with SOHO/MDI and recently with GONG observations. E.g. http://soi.stanford.edu/data/full_farside/. We have examined the predictive usefulness of far-side images of regions within a few days of the East limb by comparing the far-side images with subsequent magnetograms. We developed a quantitative measure of success based on the frequency of true positives and false alarms. We can detect about 75% of strong magnetic regions with a false alarm rate of less than 20%.

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