Global S&T Development Trend Analysis Platform of Resources and Environment
IOD, ENSO, and seasonal precipitation variation over Eastern China | |
Yue Zhang, Wen Zhou, Xin Wang, Xuan Wang, ... Jianping Gan | |
2022-01-25 | |
发表期刊 | Atmospheric Research |
出版年 | 2022 |
英文摘要 | This study investigates seasonal precipitation variation over eastern China associated with Indian Ocean Dipole (IOD) forcing and emphasizes the distinction of such responses to preceding IOD events compared with responses to El Niño–Southern Oscillation (ENSO). Precipitation evolution patterns in response to the IOD from autumn to the ensuing summer are derived from singular value decomposition analysis, revealing that the IOD causes a large portion of the seasonal variation in precipitation over eastern China in the simultaneous autumn and time-lagged summer. The difference in the impacts associated with the IOD and ENSO revealed by multiple linear regression and partial correlation analysis is that the IOD contributes mainly to abnormal precipitation in South China during autumn and in the region between the Yangtze River and Yellow River during the ensuing summer; while ENSO primarily boosts precipitation over eastern China during winter and spring. The distinctive effects of the IOD on the ensuing summer precipitation contrast with the less significant signals related to ENSO during the ensuing summer. Such precipitation responses correspond to an anomalous anticyclonic circulation pattern around the South China Sea, which is sustained by direct IOD forcing during autumn and winter and an SST cooling pattern triggered by the IOD over the central equatorial Pacific during the ensuing spring and summer. The calculation of wave activity flux and anomalous AGCM model experiments further confirm the importance of the direct heating of the IOD during autumn and winter and the indirect heating sink over the central Pacific during the ensuing spring and summer for modulating the seasonal variation in precipitation over eastern China. |
领域 | 地球科学 |
URL | 查看原文 |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/345949 |
专题 | 地球科学 |
推荐引用方式 GB/T 7714 | Yue Zhang, Wen Zhou, Xin Wang, Xuan Wang, ... Jianping Gan. IOD, ENSO, and seasonal precipitation variation over Eastern China[J]. Atmospheric Research,2022. |
APA | Yue Zhang, Wen Zhou, Xin Wang, Xuan Wang, ... Jianping Gan.(2022).IOD, ENSO, and seasonal precipitation variation over Eastern China.Atmospheric Research. |
MLA | Yue Zhang, Wen Zhou, Xin Wang, Xuan Wang, ... Jianping Gan."IOD, ENSO, and seasonal precipitation variation over Eastern China".Atmospheric Research (2022). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论