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DOI10.1029/2017JD028205
Quantification of Observed Electrical Effect on the Raindrop Size Distribution in Tropical Clouds
Mudiar, Dipjyoti1,2; Pawar, S. D.1; Hazra, Anupam1; Konwar, Mahen1; Gopalakrishnan, V.1; Srivastava, M. K.2; Goswami, B. N.3
2018-05-16
发表期刊JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES
ISSN2169-897X
EISSN2169-8996
出版年2018
卷号123期号:9页码:4527-4544
文章类型Article
语种英语
国家India
英文摘要

In the backdrop of extensive laboratory and theoretical evidence of broadening of the drop size distribution (DSD) of raindrops in the presence of electric field, quantification of the same in observed tropical clouds is lacking. Here this is quantified using the DSD measured by a microrain radar at 2,400-, 1,200-, and 600-m heights from the surface in six strongly electrified and six weakly electrified stratiform rain events together with the DSD of raindrops at the surface measured by a disdrometer for the same cases. The presence/absence of lightning is used to distinguish between strongly and weakly electrified events. The vertical profile of Median Volume Diameter below the melting layer and DSDs at all three heights for strongly electrified events and weakly electrified events are significantly different from each other, consistent with previous laboratory and numerical studies (Rayleigh, 1879; Davis, 1964; Moore et al., 1964, https://doi.org/10.1175/1520-0469(1964)021 < 0646:GORAMA > 2.0.CO;2). Our results indicate that the electric field and surface charge of raindrops can affect the collision-coalescence process and breakup characteristics of raindrops. Our study suggests that the parameterization of electrical processes in weather/climate models can possibly improve the simulation of tropical rainfall in numerical models as well as a proper representation of DSD will improve the estimation of tropical rainfall in airborne measurements.


领域气候变化
收录类别SCI-E
WOS记录号WOS:000434132400008
WOS关键词MESOSCALE CONVECTIVE SYSTEMS ; WATER DROPS ; WIND-TUNNEL ; STRATIFORM PRECIPITATION ; COLLISION EFFICIENCY ; LIGHTNING ACTIVITY ; RADAR OBSERVATIONS ; BRIGHT BAND ; FIELDS ; REGIONS
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/32700
专题气候变化
作者单位1.Indian Inst Trop Meteorol, Pune, Maharashtra, India;
2.Banaras Hindu Univ, Dept Geophys, Varanasi, Uttar Pradesh, India;
3.Cotton Univ, Dept Phys, Gauhati, India
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GB/T 7714
Mudiar, Dipjyoti,Pawar, S. D.,Hazra, Anupam,et al. Quantification of Observed Electrical Effect on the Raindrop Size Distribution in Tropical Clouds[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(9):4527-4544.
APA Mudiar, Dipjyoti.,Pawar, S. D..,Hazra, Anupam.,Konwar, Mahen.,Gopalakrishnan, V..,...&Goswami, B. N..(2018).Quantification of Observed Electrical Effect on the Raindrop Size Distribution in Tropical Clouds.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(9),4527-4544.
MLA Mudiar, Dipjyoti,et al."Quantification of Observed Electrical Effect on the Raindrop Size Distribution in Tropical Clouds".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.9(2018):4527-4544.
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