Influence of the Anomalous Patterns of the Mascarene and Australian Highs on Precipitation during the Prerainy Season in South China
The authors investigate the features of precipitation during the prerainy season in South China (PSCPRS) and the atmospheric circulation in the Southern Hemisphere (SH), which is expected to influence the PSCPRS significantly. The Morlet wavelet method revealed that the PSCPRS has significant intera...
Saved in:
| Main Authors: | , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Wiley
2017-01-01
|
| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2017/6408029 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1850231765499641856 |
|---|---|
| author | Xue Han Fengying Wei Xingrong Chen |
| author_facet | Xue Han Fengying Wei Xingrong Chen |
| author_sort | Xue Han |
| collection | DOAJ |
| description | The authors investigate the features of precipitation during the prerainy season in South China (PSCPRS) and the atmospheric circulation in the Southern Hemisphere (SH), which is expected to influence the PSCPRS significantly. The Morlet wavelet method revealed that the PSCPRS has significant interannual variability, especially in its quasi-biennial oscillation. The PSCPRS exhibits a significant monsoonal precipitation pattern. Using singular value decomposition (SVD) and composite analysis, the anomalous characteristics of SH atmospheric circulations and their impacts on the PSCPRS are studied. The results reveal that eastward movements or extensions of the Mascarene high (MH) and Australian high (AH), which have quasi-baroclinic geopotential height structures in the lower and middle troposphere, are the most significant factors affecting the PSCPRS. Their impacts on the PSCPRS anomalies are further studied using the index east of the MH (IEMH) and index east of the AH (IEAH). The IEMH and IEAH have notable significant positive correlations with the PSCPRS. When either the IEMH or IEAH is stronger (weaker), more (less) rainfall occurs during the prerainy season in South China. |
| format | Article |
| id | doaj-art-03581e09ecff4dcea0a9f1945c83f826 |
| institution | OA Journals |
| issn | 1687-9309 1687-9317 |
| language | English |
| publishDate | 2017-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-03581e09ecff4dcea0a9f1945c83f8262025-08-20T02:03:25ZengWileyAdvances in Meteorology1687-93091687-93172017-01-01201710.1155/2017/64080296408029Influence of the Anomalous Patterns of the Mascarene and Australian Highs on Precipitation during the Prerainy Season in South ChinaXue Han0Fengying Wei1Xingrong Chen2National Marine Environmental Forecasting Center, Beijing 100081, ChinaState Key Laboratory of Severe Weather, Chinese Academy of Meteorological Sciences, Beijing 100081, ChinaNational Marine Environmental Forecasting Center, Beijing 100081, ChinaThe authors investigate the features of precipitation during the prerainy season in South China (PSCPRS) and the atmospheric circulation in the Southern Hemisphere (SH), which is expected to influence the PSCPRS significantly. The Morlet wavelet method revealed that the PSCPRS has significant interannual variability, especially in its quasi-biennial oscillation. The PSCPRS exhibits a significant monsoonal precipitation pattern. Using singular value decomposition (SVD) and composite analysis, the anomalous characteristics of SH atmospheric circulations and their impacts on the PSCPRS are studied. The results reveal that eastward movements or extensions of the Mascarene high (MH) and Australian high (AH), which have quasi-baroclinic geopotential height structures in the lower and middle troposphere, are the most significant factors affecting the PSCPRS. Their impacts on the PSCPRS anomalies are further studied using the index east of the MH (IEMH) and index east of the AH (IEAH). The IEMH and IEAH have notable significant positive correlations with the PSCPRS. When either the IEMH or IEAH is stronger (weaker), more (less) rainfall occurs during the prerainy season in South China.http://dx.doi.org/10.1155/2017/6408029 |
| spellingShingle | Xue Han Fengying Wei Xingrong Chen Influence of the Anomalous Patterns of the Mascarene and Australian Highs on Precipitation during the Prerainy Season in South China Advances in Meteorology |
| title | Influence of the Anomalous Patterns of the Mascarene and Australian Highs on Precipitation during the Prerainy Season in South China |
| title_full | Influence of the Anomalous Patterns of the Mascarene and Australian Highs on Precipitation during the Prerainy Season in South China |
| title_fullStr | Influence of the Anomalous Patterns of the Mascarene and Australian Highs on Precipitation during the Prerainy Season in South China |
| title_full_unstemmed | Influence of the Anomalous Patterns of the Mascarene and Australian Highs on Precipitation during the Prerainy Season in South China |
| title_short | Influence of the Anomalous Patterns of the Mascarene and Australian Highs on Precipitation during the Prerainy Season in South China |
| title_sort | influence of the anomalous patterns of the mascarene and australian highs on precipitation during the prerainy season in south china |
| url | http://dx.doi.org/10.1155/2017/6408029 |
| work_keys_str_mv | AT xuehan influenceoftheanomalouspatternsofthemascareneandaustralianhighsonprecipitationduringtheprerainyseasoninsouthchina AT fengyingwei influenceoftheanomalouspatternsofthemascareneandaustralianhighsonprecipitationduringtheprerainyseasoninsouthchina AT xingrongchen influenceoftheanomalouspatternsofthemascareneandaustralianhighsonprecipitationduringtheprerainyseasoninsouthchina |