通过项目所有人的共同努力，目前已完成青年基金项目制定的目标，绘制出夏季江淮流域降水准双周变率的存在和运动特征，解释了其产生和维持的物理过程，探讨了其特征的季节依赖性和原因, 为江淮流域季节内尺度的模拟评估和预测提供了科学的依据。项目实施两年内，项目负责人共撰写相关的SCI文章5篇（其中第一作者4篇，通讯作者1篇），其中有2篇投在影响因子3以上的国际知名刊物上（Climate Dynamics 和 Mon. Wea. Rev.）。青年基金项目研究结果还发现：上游地区的青藏高原也存在着明显的准双周信号；但其特征和物理机制至今并不清楚。为了进一步探索江淮流域季节内预测的先兆因子，申请人希望利用各种可靠的青藏高原观测资料，继续研究上游地区青藏高原准双周信号的存在和运动特征，以及形成和演变过程；并从寻找上游预报因子的角度，探索青藏高原地区准双周振荡对下游地区天气和气候的影响。

The aim of the Youth Fund project to depict a comprehensive picture of behavior characteristics and genesis for the quasi-biweekly (QB) variation over Yangtze-Huai River Basin (YHRB) has been finished through the efforts from all participants, which can provide empirical indication for the subseasonal simulation and prediction over YHRB. In the past two years of project implemented, the PI wrote 5 papers in the SCI magazines and two of them have impact factors above 3. The Youth Fund project also found that QB signals are significant over Tibetan Plateau region, but the behavior features and forming mechanism of QB oscillation over Tibetan Plateau are not well known. To further investigate the forerunner of subseasonal prediction over YHRB, the new project will apply numerous reliable observational datasets over Tibetan Plateau that is an important upstream region of YHRB to investigate the behavior features, evolutions, and forming mechanism, and then further to recognize the influence of QB over Tibetan Plateau on downstream regions.