Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1007/s00382-019-04857-3 |
Statistical characteristics of the cloud cells in the categories of pre-convective, convective-initiation and convective-enhancement in the contrasting monsoon seasons over the rain-shadow region of peninsular India | |
Morwal, S. B.1; Padmakumari, B.1; Narkhedkar, S. G.1; Reddy, Y. K.2; Maheskumar, R. S.3; Pandithurai, G.1; Kulkarni, J. R.1 | |
2019-08-01 | |
发表期刊 | CLIMATE DYNAMICS
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ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2019 |
卷号 | 53页码:2355-2374 |
文章类型 | Article |
语种 | 英语 |
国家 | India |
英文摘要 | The cloud cells are categorized into six categories based on the radar reflectivity data obtained from Hyderabad S-band radar for the excess (2013) and deficient (2014) summer monsoon seasons. Among these, three categories (pre-convective, PC:19-27.5 dBZ, convective-initiation, CI: 28-36.5 dBZ and convective-enhancement, CE:37-45.5 dBZ) constitute about 59-64% of the total cloud population and play a vital role in the total rainfall. The monsoons are classified into excess/deficient if the seasonal rainfalls are more/less by 10% from the climatological mean. The study showed that on the daily scale, occurrence of these cells is ubiquitous feature of this rain-shadow region. Persistent formation of cells is due to large scale monsoon circulation and solar heating. On the intraseasonal scale monsoon conditions are classified into active/break conditions based on rainfall activity. Prevalence of high moisture (>80%) and upward vertical velocity (up to 200hPa) are responsible for high occurrence of cells in the active conditions. The solar heating is conducive for formation of cells in the break monsoon conditions and in the afternoon hours. Mean rate of transition from lower to higher level of convection intensity is -0.72. The clouds in the states of PC, CI and CE show maximum/minimum values in the local afternoon/morning hours. The linkages established using multivariate regression analysis between VL category cells and the large-scale dynamic parameters and solar heating showed dominant role of these processes in the statistical prediction of number of these cells. The spatio-temporal variability of these cells will be useful for understanding the evolution of convection and modeling studies. |
英文关键词 | Convection using radar Rain-shadow region Pre-convective Convective-initiation Convective-enhancement Dynamical processes Thermodynamical processes Bowen ratio |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000475558800065 |
WOS关键词 | SEEDING EXPERIMENTS ; PRECIPITATION ; CUMULUS ; EVOLUTION ; SHEAR ; RATIO ; ASIA |
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/185459 |
专题 | 气候变化 |
作者单位 | 1.Indian Inst Trop Meteorol, Pune 411008, Maharashtra, India; 2.Indian Meteorol Dept, Hyderabad, India; 3.Minist Earth Sci, Lodhi Rd, New Delhi, India |
推荐引用方式 GB/T 7714 | Morwal, S. B.,Padmakumari, B.,Narkhedkar, S. G.,et al. Statistical characteristics of the cloud cells in the categories of pre-convective, convective-initiation and convective-enhancement in the contrasting monsoon seasons over the rain-shadow region of peninsular India[J]. CLIMATE DYNAMICS,2019,53:2355-2374. |
APA | Morwal, S. B..,Padmakumari, B..,Narkhedkar, S. G..,Reddy, Y. K..,Maheskumar, R. S..,...&Kulkarni, J. R..(2019).Statistical characteristics of the cloud cells in the categories of pre-convective, convective-initiation and convective-enhancement in the contrasting monsoon seasons over the rain-shadow region of peninsular India.CLIMATE DYNAMICS,53,2355-2374. |
MLA | Morwal, S. B.,et al."Statistical characteristics of the cloud cells in the categories of pre-convective, convective-initiation and convective-enhancement in the contrasting monsoon seasons over the rain-shadow region of peninsular India".CLIMATE DYNAMICS 53(2019):2355-2374. |
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