Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1175/JCLI-D-16-0434.1 |
A Dynamic Index for the Westward Ridge Point Variability of the Western Pacific Subtropical High during Summer | |
Yang, Ruowen1,2; Xie, Zhiang1,3; Cao, Jie1,2 | |
2017-05-01 | |
发表期刊 | JOURNAL OF CLIMATE |
ISSN | 0894-8755 |
EISSN | 1520-0442 |
出版年 | 2017 |
卷号 | 30期号:9 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Based on the ridge line of the western Pacific subtropical high (WPSH) and the theory of gradient wind approximation, a dynamic index for the westward ridge point (WRPI) of the WPSH is defined. Owing to its definition, the new dynamic index can be used to analyze the evolution of the WPSH at various time scales over most isobaric surfaces. The WRPI comprises two dimensions labeled ZWRPI and MWRPI, which depict the zonal and meridional movement, respectively, of the westward ridge point of the WPSH. The rationality and reliability of the dynamic index were validated using reanalysis atmospheric circulation, outgoing long-wave radiation, surface air temperature, and rainfall data. The WRPI series revealed that the westward ridge point of the WPSH generally advances poleward while withdrawing eastward. Furthermore, there were close relationships between the WRPI, atmospheric circulation, outgoing longwave radiation, and precipitation over East Asia and the western Pacific in summer. The significant correlation coefficients indicated that the ZWRPI and the MWRPI can reflect the impact of the zonal and meridional movement of the WPSH on the climate over East Asia and the western Pacific. The ZWRPI has no significant linear trend at the interdecadal time scale, indicating that the WPSH did not significantly extend westward in summer. The slight decrease of the MWRPI suggests that the WPSH moves southward but with an insignificant trend. Compared with indices proposed in previous studies, the WRPI showed advantages in objectivity, reliability, predictability, practicability, and therefore extensive potential for application. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000399680500015 |
WOS关键词 | SURFACE-TEMPERATURE ; LATE 1970S ; EL-NINO ; CLIMATE ; PRECIPITATION ; PREDICTABILITY ; REANALYSIS ; RAINFALL ; MODELS ; ERA-40 |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/19803 |
专题 | 气候变化 |
作者单位 | 1.Yunnan Univ, Dept Atmospher Sci, Kunming, Peoples R China; 2.Yunnan Key Lab Int Rivers & Transboundary Ecosecu, Kunming, Peoples R China; 3.Chinese Acad Sci, Inst Atmospher Phys, Beijing, Peoples R China |
推荐引用方式 GB/T 7714 | Yang, Ruowen,Xie, Zhiang,Cao, Jie. A Dynamic Index for the Westward Ridge Point Variability of the Western Pacific Subtropical High during Summer[J]. JOURNAL OF CLIMATE,2017,30(9). |
APA | Yang, Ruowen,Xie, Zhiang,&Cao, Jie.(2017).A Dynamic Index for the Westward Ridge Point Variability of the Western Pacific Subtropical High during Summer.JOURNAL OF CLIMATE,30(9). |
MLA | Yang, Ruowen,et al."A Dynamic Index for the Westward Ridge Point Variability of the Western Pacific Subtropical High during Summer".JOURNAL OF CLIMATE 30.9(2017). |
条目包含的文件 | 条目无相关文件。 |
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