Using the data of earthquake, 3.2 m deep ground temperature and rainfall field from January 2009 to April 2010, the evolution of earth-atmosphere system is analyzed, which, on the one hand, attempts to clarify the cause of climate change during this time; on the other hand, tries to predict the precipitation situation in the flood season of 2010 preliminarily. The results show that the strong earthquake is an important factor in the destruction of the rule of more rain in positive ground temperature and less rain in negative ground temperature. Moreover, there is an earthquake-birth trilogy before the earthquake, a beat frequency vortex is occurring in the mid-point of two past strong earthquakes and a drought with a quasi-half-year period is appeared after the earthquake, in the end, all of which make up of the control system over the climate anomaly together in 2009.

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