Influence of Three Gorges Dam on Microclimate in Sichuan Basin

Have an impact. The Three Gorges Dam first increases the water area of Sichuan, which is beneficial to increase local precipitation and atmospheric humidity.

The extreme climate in Sichuan should come from the global warming environment. First, the melting water of glaciers in this area is increasing due to climate warming, and the instability of weather system also causes the instability of rainfall. Sichuan basin is affected by southeast and southwest monsoon. The weak monsoon performance this year led to the drought in southwest China at the beginning of the year. Later, due to the lack of power, the monsoon stayed in this area for too long and was suppressed by the northern thermal high pressure, which led to long-term concentrated rainfall in the Sichuan Basin and even the middle and lower reaches of the Yangtze River. For the next period of time, the pressure of drought resistance in the north is great.