Future change in summertime rainfall under a warmer climate will impact the lives of more than two-thirds of the world’s population. However, the future changes in the duration of the rainy season affected by regional characteristics are not yet entirely understood. We try to understand changes in the length of the rainy season as well as the amounts of the future summertime precipitation, and the related processes over regional monsoon domains using phase six of the Coupled Model Intercomparison Project archive. Projections reveal extensions of the rainy season over the most of monsoon domains, except over the American monsoon. Enhancing the precipitation in the future climate has various increasing rates depending on the subregional monsoon, and it is mainly affected by changes in thermodynamic factors. This study promotes awareness for the risk of unforeseen future situations by showing regional changes in precipitation according to future scenarios.

在温暖的气候下，夏季降雨量的未来变化将影响世界三分之二以上人口的生活。但是，尚未完全了解受区域特征​​影响的雨季持续时间的未来变化。我们尝试使用耦合模型比较项目档案的第六阶段，了解雨季长度的变化以及未来夏季降水的数量，以及区域季风域的相关过程。预测表明，除美国季风以外，大部分季风区域的雨季都在延长。取决于次区域季风，未来气候中降水的增加有各种不同的增长率，并且主要受热力学因素变化的影响。