Discrepancies in precipitation changes over the Southwest River Basin of China based on ISIMIP3b.

From the early 1960s to the 1970s, the PCI in the SWRB exhibited a decreasing trend, followed by successive fluctuating changes characterized by increases and decreases from the late 1970s to the early 21st century, with relatively small amplitude variations.

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S3 , the central and the Himalayan regions of the SWRB exhibit an overall trend towards wetter conditions, while the northern and southern regions show a trend towards aridity, with the southern region experiencing particularly intense dryness.

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