Effects of Tibetan Plateau and Tropical Ocean on Autumn Rainfall Variation in Southwest China

Abstract:

In recent years, droughts often occur in Southwest China (SWC) in autumn, affecting crop production and human life. The drought in SWC is closely related to rainfall deficiency. The current study investigates the possible factors from Tropical Ocean and the Tibetan Plateau that affect the inter-annual variability of SWC autumn rainfall, and analyze their individual and combined effects in the current climate. The correlation between regressed precipitation sequence from three factors and original precipitation sequence is higher than that between any single factor and the precipitation.