V2EX thermal wind

Thermal Wind

定义 Definition

thermal wind(热成风):气象学中的一个概念,指在水平温度梯度存在时,大气在不同高度之间出现的地转风(或近似地转风)的垂直风切变。它并不是一种“真实吹过的风”,而是用来描述高空风随高度变化的规律(热成风平衡)。

发音 Pronunciation

/θml wnd/
/θml wnd/

例句 Examples

In winter, a strong thermal wind often forms above sharp temperature contrasts.
在冬季,强烈的热成风常常出现在明显的温度对比之上。

The jet stream can be understood as a manifestation of thermal wind balance in the upper troposphere, where horizontal temperature gradients lead to strong vertical wind shear.
急流可以被理解为对流层上部热成风平衡的一种体现:水平温度梯度会导致显著的垂直风切变。

词源 Etymology

thermal 来自希腊语 thermē(“热”),经由拉丁语与法语进入英语;wind 源自古英语 wind(“风”)。该术语在动力气象学中用来强调:风的垂直变化与“热(温度分布)”密切相关,因此称为“热成风”。

相关词汇 Related Words

文学作品例证 Literary Works

  • An Introduction to Dynamic Meteorology(James R. Holton & Gregory J. Hakim):系统讲解热成风关系与热成风平衡。
  • Atmospheric Science: An Introductory Survey(John M. Wallace & Peter V. Hobbs):用热成风解释急流与锋区附近的风场结构。
  • Atmospheric and Oceanic Fluid Dynamics(Geoffrey K. Vallis):在大尺度环流与平衡理论中多次讨论热成风。
  • Synoptic-Dynamic Meteorology in Midlatitudes(Howard B. Bluestein):在中纬度天气系统、锋生与急流分析中频繁使用该术语。
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