The impact of the Western Pacific Warm Pool variability on extreme precipitation over the Tibetan Plateau
Abstract
Western Pacific Warm Pool Strength (WPWPS) index, on extreme precipitation (RX1day) over the Tibetan Plateau. Using gridded daily precipitation data from the Climate Prediction Center and SST data from the National Climate Center, we analyze the relationship between WPWPS and extreme precipitation from 1994 to 2023. The results reveal a strong positive correlation (r = 0.631) between WPWPS and RX1day.
Spatially, the influence of the WPWPS extends across much of the plateau, with particularly strong correlations in the southeastern, central,
and eastern regions. These findings suggest that SST anomalies in the Western Pacific significantly impact monsoonal flows and subtropical
high circulation patterns, leading to enhanced moisture transport and more intense extreme precipitation events.
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DOI: http://dx.doi.org/10.18686/ag.v8i3.13475
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