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DOI | 10.1007/s00382-017-3778-7 |
The Chennai extreme rainfall event in 2015: The Bay of Bengal connection | |
Boyaj, Alugula1; Ashok, Karumuri1; Ghosh, Subimal2; Devanand, Anjana2; Dandu, Govardhan1 | |
2018-04-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2018 |
卷号 | 50页码:2867-2879 |
文章类型 | Article |
语种 | 英语 |
国家 | India |
英文摘要 | Southeast India experienced a heavy rainfall during 30 Nov-2 Dec 2015. Particularly, the Chennai city, the fourth major metropolitan city in India with a population of 5 million, experienced extreme flooding and causalities. Using various observed/reanalysed datasets, we find that the concurrent southern Bay of Bengal (BoB) sea surface temperatures (SST) were anomalously warm. Our analysis shows that BoB sea surface temperature anomalies (SSTA) are indeed positively, and significantly, correlated with the northeastern Indian monsoonal rainfall during this season. Our sensitivity experiments carried out with the Weather Research and Forecasting (WRF) model at 25 km resolution suggest that, while the strong concurrent El Nio conditions contributed to about 21.5% of the intensity of the extreme Chennai rainfall through its signals in the local SST mentioned above, the warming trend in BoB SST also contributed equally to the extremity of the event. Further, the El Nio southern oscillation (ENSO) impacts on the intensity of the synoptic events in the BoB during the northeast monsoon are manifested largely through the local SST in the BoB as compared through its signature in the atmospheric circulations over the BoB. |
英文关键词 | The Chennai extreme rainfall event WRF model Northeast monsoon Bay of Bengal warming trend |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428600200032 |
WOS关键词 | NORTHEAST MONSOON RAINFALL ; SEA-SURFACE TEMPERATURE ; SOUTH PENINSULAR INDIA ; FORECASTING WRF MODEL ; WEATHER RESEARCH ; PART I ; SIMULATION ; MUMBAI ; OCEAN ; DEPRESSIONS |
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/36210 |
专题 | 气候变化 |
作者单位 | 1.Univ Hyderabad, Ctr Earth & Space Sci, Hyderabad 500046, Andhra Pradesh, India; 2.Indian Inst Technol, Dept Civil Engn, Mumbai 400076, Maharashtra, India |
推荐引用方式 GB/T 7714 | Boyaj, Alugula,Ashok, Karumuri,Ghosh, Subimal,et al. The Chennai extreme rainfall event in 2015: The Bay of Bengal connection[J]. CLIMATE DYNAMICS,2018,50:2867-2879. |
APA | Boyaj, Alugula,Ashok, Karumuri,Ghosh, Subimal,Devanand, Anjana,&Dandu, Govardhan.(2018).The Chennai extreme rainfall event in 2015: The Bay of Bengal connection.CLIMATE DYNAMICS,50,2867-2879. |
MLA | Boyaj, Alugula,et al."The Chennai extreme rainfall event in 2015: The Bay of Bengal connection".CLIMATE DYNAMICS 50(2018):2867-2879. |
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