The Hurricane’s Inner Core Region. I. Symmetric and Asymmetric Structure
The Hurricane’s Inner Core Region. I. Symmetric and Asymmetric Structure
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飓风的内核区域 I. 对称和不对称结构。
DOI：
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发表时间：
1973
期刊：
影响因子：
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通讯作者：
W. M. Gray
中科院分区：
文献类型：
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作者：
D. Shea;W. M. Gray
摘要：本文利用美国国家飓风研究实验室（National Hurricane Research Laboratory）在1957 - 1969年13年间533个径向飞行段的观测资料，分析了该飓风核心区的结构特征和变率。将切向风和径向风、d值和调整后的温度与最大风半径（RMW）相结合，构建了五级平均对称风暴和五级平均不对称风暴。给出了RMW随高度的斜率和RMW相对于内云壁的位置。利用这些结果，提出了一个理想的、稳态的飓风核心内部流动条件示意图模型。根据风暴的加深和填充趋势、强度和风暴速度进行分层。最后讨论了RMW随纬度、最大风、雷达内半径、中心气压等特征的变化规律。许多重要的特征被注意到：1)风暴流入几乎被限制在…
Abstract Observational information from 533 radial flight legs executed by the National Hurricane Research Laboratory over a 13-year period (1957–69) is used to present the structural characteristics and the variability of the hurricane’s inner core region. Tangential and radial winds, D-values, and adjusted temperatures are composited with respect to the Radius of Maximum Wind (RMW) in order to construct a five-level mean symmetric storm and a five-level mean asymmetric storm. The slope of the RMW with height and the position of the RMW relative to the inner cloud wall are presented. Utilizing these results, an idealized, steady-state schematic model of the flow conditions in the inner hurricane core is presented. Storms are stratified by deepening and filling tendency, intensity and storm speed. Finally, the variations of the RMW with latitude, maximum wind, inner radar radius, central pressure, and other features are discussed. Many significant features are noted: 1) storm inflow is confined almost exc...