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The sudden release of magnetic energy on the Sun drives powerful solar flaresand coronal mass ejections. The key issue is the difficulty in predicting theoccurrence time and location of strong solar eruptions, i.e., those leading tothe high impact space weather disturbances at the near-Earth environment. Solarradio imaging helps identify the magnetic field characteristics of activeregions susceptible to intense flares and energetic coronal mass ejections.Mapping of the Sun at X-band (8.1 -- 9.3 GHz) with the 12-m radio telescope atthe Arecibo Observatory allows monitoring of the evolution of the brightnesstemperature of active regions in association with the development of magneticcomplexity, which can lead to strong eruptions. For a better forecastingstrategy in the future, such ground-based radio observations of high-spatialand temporal resolution, along with a full polarization capability, would havetremendous potential not only to understand the magnetic activity of solareruptions, but also for revealing the particle acceleration mechanism andadditional exciting science.

Regular Solar Radio Imaging at Arecibo: Space Weather Perspective of Evolution of Active Regions