Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2018JD028545 |
Quantification of Precipitation Asymmetries of Tropical Cyclones Using 16-Year TRMM Observations | |
Pei, Yongxian; Jiang, Haiyan | |
2018-08-16 | |
发表期刊 | JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES |
ISSN | 2169-897X |
EISSN | 2169-8996 |
出版年 | 2018 |
卷号 | 123期号:15页码:8091-8114 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Both low and higher wavenumber asymmetries of tropical cyclone (TC) precipitation are quantified from 16years of Tropical Rainfall Measuring Mission (TRMM) microwave imager rainfall estimates using Fourier decomposition. The energy spectrum of rainfall perturbation and impacts of the storm motion and vertical wind shear to the rainfall asymmetry are analyzed. It is found that the wavenumber 1 perturbation only contributes 37% of the total perturbation energy of total TC precipitation, while over 70% of the total perturbation energy is from the sum of wavenumbers 1 through 6. Most of the total precipitation asymmetry is from the heavy precipitation, and contributions for light and moderate precipitation types are small. The maximum motion-relative precipitation asymmetry is generally located down motion but shifts cyclonically after adding wavenumber 2-6 components to wavenumber 1. The asymmetry index of wavenumber 1 and 1-6 asymmetries relative to the vertical wind shear is about 2 to 3 times as large as that relative to the storm motion. The vertical wind shear is a more important factor than the storm motion in producing precipitation asymmetry, especially for the wavenumber 1. A dominant downshear left wavenumber-1 asymmetry maximum is found regardless of the shear vector orientation to the TC motion, the magnitude of the shear value, and the speed of TC motion. However, the maximum asymmetry of wavenumber 1-6 asymmetry becomes downshear right for the subgroup with low shear, fast motion, and the shear vector left to the motion. Key Points |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000443566900018 |
WOS关键词 | VERTICAL WIND SHEAR ; RAINFALL ASYMMETRY ; INTENSITY CHANGE ; DOPPLER RADAR ; STORM MOTION ; PART II ; HURRICANE ; CORE ; CONVECTION ; EVOLUTION |
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/32003 |
专题 | 气候变化 |
作者单位 | Florida Int Univ, Dept Earth & Environm, Miami, FL 33199 USA |
推荐引用方式 GB/T 7714 | Pei, Yongxian,Jiang, Haiyan. Quantification of Precipitation Asymmetries of Tropical Cyclones Using 16-Year TRMM Observations[J]. JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,2018,123(15):8091-8114. |
APA | Pei, Yongxian,&Jiang, Haiyan.(2018).Quantification of Precipitation Asymmetries of Tropical Cyclones Using 16-Year TRMM Observations.JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES,123(15),8091-8114. |
MLA | Pei, Yongxian,et al."Quantification of Precipitation Asymmetries of Tropical Cyclones Using 16-Year TRMM Observations".JOURNAL OF GEOPHYSICAL RESEARCH-ATMOSPHERES 123.15(2018):8091-8114. |
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