Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1007/s00382-016-3343-9 |
A study of 2014 record drought in India with CFSv2 model: role of water vapor transport | |
Ramakrishna, S. S. V. S.1; Brahmananda Rao, V.1,2; Rao, B. R. Srinivasa1; Prasad, D. Hari3; Rao, N. Nanaji1; Panda, Roshmitha1 | |
通讯作者 | Ramakrishna, S. S. V. S. |
来源期刊 | CLIMATE DYNAMICS |
ISSN | 0930-7575 |
EISSN | 1432-0894 |
出版年 | 2017 |
卷号 | 49期号:1-2页码:297-312 |
英文摘要 | The Indian summer monsoon season of 2014 was erratic and ended up with a seasonal rainfall deficit of 12 % and a record drought in June. In this study we analyze the moisture transport characteristics for the monsoon season of 2014 using both NCEP FNL reanalysis (FNL) and CFSv2 (CFS) model data. In FNL, in June 2014 there was a large area of divergence of moisture flux. In other months also there was lesser flux. This probably is the cause of 2014 drought. The CFS model overestimated the drought and it reproduces poorly the observed rainfall over central India (65E-95E; 5N-35N). The correlation coefficient (CC) between the IMD observed rainfall and CFS model rainfall is only 0.1 while the CC between rainfall and moisture flux convergence in CFS model is only 0.20 and with FNL data -0.78. This clearly shows that the CFS model has serious difficulty in reproducing the moisture flux convergence and rainfall. We found that the rainfall variations are strongly related to the moisture convergence or divergence. The hypothesis of Krishnamurti et al. (J Atmos Sci 67:3423-3441, 2010) namely the intrusion of west African desert air and the associated low convective available potential energy inhibiting convection and rainfall shows some promise to explain dry spells in Indian summer monsoon. However, the rainfall or lack of it is mainly explained by convergence or divergence of moisture flux. |
英文关键词 | Indian summer monsoon Rainfall Moisture budget Monsoon drought |
类型 | Article |
语种 | 英语 |
国家 | India ; Brazil ; Saudi Arabia |
收录类别 | SCI-E |
WOS记录号 | WOS:000403716500017 |
WOS关键词 | EURASIAN SNOW COVER ; 1979 SUMMER MONSOON ; NORTHERN SUMMER ; ARABIAN-SEA ; HEAT-BUDGET ; OCEAN ; RAINFALL ; PRECIPITATION ; BREAKS ; SYSTEM |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/198127 |
作者单位 | 1.Andhra Univ, Dept Meteorol & Oceanog, Visakhaptnam, India; 2.CPTECH INPE, Cachoeira Paulista, Brazil; 3.King Abdullah Univ Sci & Technol, Phys Sci & Engn Div, Thuwal, Saudi Arabia |
推荐引用方式 GB/T 7714 | Ramakrishna, S. S. V. S.,Brahmananda Rao, V.,Rao, B. R. Srinivasa,et al. A study of 2014 record drought in India with CFSv2 model: role of water vapor transport[J],2017,49(1-2):297-312. |
APA | Ramakrishna, S. S. V. S.,Brahmananda Rao, V.,Rao, B. R. Srinivasa,Prasad, D. Hari,Rao, N. Nanaji,&Panda, Roshmitha.(2017).A study of 2014 record drought in India with CFSv2 model: role of water vapor transport.CLIMATE DYNAMICS,49(1-2),297-312. |
MLA | Ramakrishna, S. S. V. S.,et al."A study of 2014 record drought in India with CFSv2 model: role of water vapor transport".CLIMATE DYNAMICS 49.1-2(2017):297-312. |
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