Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2019GL084248 |
Relating Observations of Gradient Nonbalance at the Top of Hurricanes With Their Warm Core Structures | |
Cohen, Yair1; Durden, Stephen L.2; Harnik, Nili3; Heifetz, Eyal3 | |
2019-10-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2019 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA; Israel |
英文摘要 | Recent analysis of Weather Research and Forecasting simulations shows that the flow around high-pressure regions that often develop at the top of Hurricanes (15-km altitude) violates the gradient wind balance, hence termed as "gradient nonbalance." While observations at such high altitudes are rare, recently, NASA-HS3 and the Office of Naval Research-Tropical Cyclone Intensity campaigns deployed dropsondes from unprecedented levels around 18 km. In this work we use a wavenumber decomposition method to reproduce 2-D slices and 3-D structures from three storms from these campaigns: Edouard (2014), Joaquin (2015), and Patricia (2015). The analyzed data show that the development of high pressure at the hurricane's top leads to various degrees of gradient nonbalance. These highs are a hydrostatic reflection of the storm tilt, which offsets the warm core with respect to the near surface low and the slanted eyewall. The implications of these findings and the relations with recent reports of upper-level wind field are discussed. |
英文关键词 | gradient non balance hurricane outflow tropical cyclone intensity dropsonde observations hurricane upper level observations hurricane intensification |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000492818500001 |
WOS关键词 | RAPID INTENSIFICATION ; HEIGHT |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
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/187810 |
专题 | 气候变化 |
作者单位 | 1.CALTECH, Geol & Planetary Sci, Pasadena, CA 91125 USA; 2.CALTECH, Jet Prop Lab, Pasadena, CA USA; 3.Tel Aviv Univ, Porter Sch Environm & Earth Sci, Dept Geophys, Tel Aviv, Israel |
推荐引用方式 GB/T 7714 | Cohen, Yair,Durden, Stephen L.,Harnik, Nili,et al. Relating Observations of Gradient Nonbalance at the Top of Hurricanes With Their Warm Core Structures[J]. GEOPHYSICAL RESEARCH LETTERS,2019. |
APA | Cohen, Yair,Durden, Stephen L.,Harnik, Nili,&Heifetz, Eyal.(2019).Relating Observations of Gradient Nonbalance at the Top of Hurricanes With Their Warm Core Structures.GEOPHYSICAL RESEARCH LETTERS. |
MLA | Cohen, Yair,et al."Relating Observations of Gradient Nonbalance at the Top of Hurricanes With Their Warm Core Structures".GEOPHYSICAL RESEARCH LETTERS (2019). |
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