长江流域非典型少雨型主汛期环流特征及其影响机制分析

王海燕, 王孝慈, 张灵, 周耘逸, 孟英杰

Analysis of circulation characteristics and influencing mechanisms of atypical below-normal precipitation type during main flood season over the Yangtze River Basin

WANG Haiyan, WANG Xiaoci, ZHANG Ling, Zhou Yunyi, MENG Yingjie

图8 2025年和2023年6—8月副高脊线位置（a）和西伸脊点（b）逐日演变

Fig.8 Daily evolution of the ridge line （a） and the westward extension point （b） of the western Pacific subtropical high from June to August in 2025 and 2023