V2EX lapse rate

Lapse Rate

定义 Definition

lapse rate(大气)垂直递减率/直减率:指某个气象量(最常见是气温)随高度增加而变化的速率,通常表示为每上升 1 公里温度降低多少(如 °C/km)。在气象学中常见的有环境递减率(environmental lapse rate)与绝热递减率(adiabatic lapse rate)。

发音 Pronunciation (IPA)

/lps ret/

例句 Examples

The lapse rate is about 6.5°C per kilometer in the standard atmosphere.
在标准大气中,温度递减率大约是每公里 6.5°C。

Because the environmental lapse rate was steeper than the moist adiabatic lapse rate, the rising air stayed warmer than its surroundings, promoting convection and thunderstorms.
由于环境递减率比湿绝热递减率更陡,上升气团保持比周围空气更暖,从而促进对流并可能引发雷暴。

词源 Etymology

lapse 原意有“滑落、流逝”,来自拉丁语 lapsus(“滑倒、下落”);rate 表示“速率、比率”。合在一起,lapse rate 字面意思接近“(随高度)下落/递减的速率”,在气象学中专指气等量随高度的变化率。

相关词 Related Words

文学与名著用例 Literary Works

  • IPCC Assessment Reports(政府间气候变化专门委员会评估报告):在讨论对流、稳定度与气候模拟参数化时常出现 lapse rate
  • Wallace & Hobbs, Atmospheric Science: An Introductory Survey:大气科学经典教材,系统讲解环境递减率与绝热递减率。
  • Holton & Hakim, An Introduction to Dynamic Meteorology:在大气静力平衡、稳定度与波动等章节中使用该术语。
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