How Could Sun Storms Affect Climate ?

These days in Jakarta, Indonesia, it’s already raining. Usually now it has entered the rainy season. But in other areas, such as in East Java, it has not rained. Even there the air gets very hot and there are some areas that have difficulty with clean water. According to forecasts of some astronomers in 2012 will occur Sun Storms. Now it’s just about 3 months more to year of 2012. `Would Sun Storms that cause climate change drastically happen?
The most direct influence would come if the change meant a rise or fall in the total energy the Sun radiated upon the Earth, the so-called "solar constant." The development of highly accurate radiometers in the 1970s raised hopes that variations well below one percent could be detected at last. But few trusted any of the measurements from the ground or even from stratospheric balloons. Rockets launched above the atmosphere provided brief observations that seemed to show variation over time, but it was hard to rule out instrumentation errors. Nor were many convinced by Peter Foukal when he applied modern statistical methods to Abbot's huge body of old data, and turned up a faint connection between sunspots and the amount of solar energy reaching the Earth. Even if that were accepted, was it because the Sun emitted less energy? Or was it because ultraviolet radiation from solar storms somehow changed the upper atmosphere, which in turn somehow influenced climate, and thus affected how much sunlight Abbot had seen at the surface 
Related articles :
- Solar Storms in 2012 

- The Discovery of Global Warming