| DOI: | 10.1007/s00382-012-1637-0
|
| Scopus记录号: | 2-s2.0-84879506214
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| 论文题名: | Emerging role of Indian ocean on Indian northeast monsoon |
| 作者: | Yadav R.K.
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| 刊名: | Climate Dynamics
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| ISSN: | 9307575
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| 出版年: | 2013
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| 卷: | 41, 期:1 | | 起始页码: | 105
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| 结束页码: | 116
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| 语种: | 英语
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| 英文关键词: | Coriolis force
; ENSO
; IOD
; ITCZ
; North-East Monsoon
; Tropical cyclone
; Tropical storms
|
| 英文摘要: | This study examines the emerging role of Indian Ocean sea surface temperature (SST) on the inter-annual variability (IAV) of Indian north-east monsoon rainfall (NEMR). The IAV of NEMR is associated with the warm SST anomaly over east Bay-of-Bengal (BoB) (88.5oE-98.5oE; 8.5oN-15.5oN) and cool SST anomaly over east equatorial Indian Ocean (80.5oE-103.5oE; 6.5oS-3.5oN). The gradient of SST between these boxes (i.e. northern box minus southern box) shows strong and robust association with the Indian NEMR variability in the recent decades. For establishing the teleconnections, SST, mean sea level pressure, North Indian Ocean tropical storm track, and circulation data have been used. The study reveals that during the positive SST gradient years, the inter-tropical convergence zone (ITCZ) shifts northwards over the East Indian Ocean. The tropical depressions, storms and cyclones formed in the North Indian Ocean moves more zonally and strike the southern peninsular India and hence excess NEMR. While, during the negative SST gradient years, the ITCZ shifts southwards over the Indian Ocean. The tropical depressions, storms and cyclones formed in the North Indian Ocean moves more northwestward direction and after crossing 15oN latitude re-curve to north-east direction towards head BoB and misses southern peninsular India and hence, deficient NEMR. © 2012 Springer-Verlag Berlin Heidelberg. |
| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/54875
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| Appears in Collections: | 过去全球变化的重建
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作者单位: | Indian Institute of Tropical Meteorology, Pashan, Pune, 411008, India
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| Recommended Citation: | |
Yadav R.K.. Emerging role of Indian ocean on Indian northeast monsoon[J]. Climate Dynamics,2013-01-01,41(1)
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