Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019JD032212 |
A Comparison of the Polarimetric Radar Characteristics of Heavy Rainfall From Hurricanes Harvey (2017) and Florence (2018) | |
DeHart, Jennifer C.; Bell, Michael M. | |
2020-06-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2020 |
卷号 | 125期号:11 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Polarimetric coastal radar data are used to compare the rainfall characteristics of Hurricanes Harvey (2017) and Florence (2018). Intense rainfall was an infrequent yet important contributor to the total rainfall in Harvey, but its relative contribution varied spatially. The total rainfall over land maximized near the coast over Beaumont, TX, due to intense convection resulting from prolonged onshore flow downshear from the circulation center. Overall, polarimetric radar observations in Harvey show a dominance of high concentrations of small-to-medium drops, consistent with prior tropical cyclone studies. The microphysical characteristics were spatially and temporally inhomogeneous however, with larger drops more frequent on 27 August and higher number concentrations more frequent on 28 and 30 August. The polarimetric variables and raindrop characteristics observed during Florence share broad similarities to Harvey, but had reduced variability, fewer observations of stronger reflectivity and differential reflectivity, and a lower frequency of high number concentrations and medium-sized drops. The radar data indicate Florence had reduced coverage of stronger convection compared to Harvey. We hypothesize that differences in storm motion, intensity decay rates, and vertical wind shear produce the distinct precipitation structures and microphysical differences seen in Harvey and Florence. |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000541156800006 |
WOS关键词 | RAINDROP SIZE DISTRIBUTION ; 2D VIDEO DISDROMETER ; VERTICAL WIND SHEAR ; PRINCIPAL RAINBAND ; DISTRIBUTIONS ; KINEMATICS ; PRECIPITATION ; MICROPHYSICS ; ASYMMETRIES ; CONVECTION |
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/289446 |
专题 | 气候变化 |
作者单位 | Colorado State Univ, Dept Atmospher Sci, Ft Collins, CO 80523 USA |
推荐引用方式 GB/T 7714 | DeHart, Jennifer C.,Bell, Michael M.. A Comparison of the Polarimetric Radar Characteristics of Heavy Rainfall From Hurricanes Harvey (2017) and Florence (2018)[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2020,125(11). |
APA | DeHart, Jennifer C.,&Bell, Michael M..(2020).A Comparison of the Polarimetric Radar Characteristics of Heavy Rainfall From Hurricanes Harvey (2017) and Florence (2018).JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,125(11). |
MLA | DeHart, Jennifer C.,et al."A Comparison of the Polarimetric Radar Characteristics of Heavy Rainfall From Hurricanes Harvey (2017) and Florence (2018)".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 125.11(2020). |
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