Notice of RetractionInfluence of winter vegetation variation over Tibetan Plateau on summer precipitation of Southwest China

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

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On the basis of precipitation data for the period 1982-2001 collected from 96 observational stations in Southwest China and normalized difference vegetation index, the influence of winter vegetation variation over Tibetan Plateau on summer precipitation in Southwest China have been analyzed. The result may lead to following conclusions: The winter NDVI over Tibetan Plateau increased in recent 20 years. Correlation and SVD analyze show that there are obviously connections between the summer precipitation fluctuation in Southwest China and those in preceding winter vegetation variation over Tibetan Plateau. Corresponding to the NDVI in preceding winter is positive departure distribution over Tibetan Plateau, especially in mid-western and northern arid, the precipitation appeared an obviously decrease trend in northern Sichuan, eastern Sichuan and Chongqing and increase in other arid of Southwest China, vice versa.