V2EX relative humidity

Relative Humidity

Definition / 释义

relative humidity(相对湿度):指在相同温度下,空气中实际水汽含量(或水汽压)与该温度下空气所能达到的饱和水汽含量(或饱和水汽压)之比,通常用百分比(%)表示。数值越高,空气越“潮”;数值越低,空气越“干”。

Pronunciation / 发音

/rl..tv hjumd..ti/

Examples / 例句

The relative humidity is 70% today.
今天的相对湿度是 70%。

When relative humidity rises at night, surfaces can cool enough for water vapor to condense into dew.
夜间相对湿度上升时,物体表面可能冷却到足以让水汽凝结成露水。

Etymology / 词源

Relative 来自拉丁语 relativus,意为“相对的、关联的”;humidity 来自拉丁语 humidus(潮湿的)。在气象与环境科学中,“relative humidity(相对湿度)”用于强调湿度是相对于同温度下的饱和状态来衡量的,而不是空气中水汽的绝对量。

Related Words / 相关词

Literary Works / 文学与经典作品

  • Atmospheric Science: An Introductory Survey(Wallace & Hobbs,《大气科学:导论》)在基础气象学章节中讨论相对湿度、露点与水汽过程。
  • A Manual of Meteorology(Sir Napier Shaw,《气象学手册》)早期系统气象学著作中常出现该术语及其测量方法。
  • Principles of Environmental Physics(Monteith & Unsworth,《环境物理学原理》)在能量平衡、蒸发与空气湿度指标中使用“relative humidity”。
  • A Short Course in Cloud Physics(Rogers & Yau,《云物理学简明教程》)涉及饱和、凝结与云形成时频繁提及相对湿度。
  • The Weather Book: An Easy-to-Understand Guide to the USA’s Weather(Jack Williams,《天气之书》)面向大众的气象科普中用相对湿度解释闷热体感与天气现象。
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