Spatiotemporal Climate Variation and Analysis of Dry-Wet Trends for 1960–2019 in Jiangsu Province, Southeastern China

The spatiotemporal characteristics of dry-wet trends were identified and assessed, the dominant meteorological factors for climate Jiangsu province in humid southeastern China period 1960–2019. We conducted research using data entire as well three major regions (Huaibei, Jianghuai, Sunan) with different regional climates. results showed that decreased precipitation relative humidity spring autumn over study mainly responsible dry climates all province. Precipitation had a greater influence autumn. Decreases sunshine hours wind speed summer wet Huaibei Jianghuai However, increased significantly was increasing trend Sunan. Significantly winter primarily wetness Sunan season. northern caused by decrease period. For growing season annually, positive effects changes speed, hours, led to index Sunan, decreasing countered decreases which resulted slight both annually. Sensitivity analysis indicated positively sensitive negatively air temperature, during Overall, this region most followed, order sensitivity, humidity. Our findings provide theoretical basis adjusting irrigation programs efficient utilization water resources at scale China.