Temperature lapse rate

Japanese: 気温減率 - きおんげんりつ（英語表記）temperature lapse rate

The rate at which temperature changes with altitude. This rate is called the lapse rate, since temperature decreases with altitude up to an altitude of approximately 10 km. The temperature in the atmospheric boundary layer from the earth's surface to an altitude of about 1 km is directly affected by the earth's surface temperature, so the lapse rate changes between day and night. Also, on a clear daytime day, it is close to the dry adiabatic lapse rate (about 1°C per 100 m difference in altitude). The lapse rate above that is 0.6 to 0.7°C per 100 m up to the tropopause, at which point it becomes an isothermal layer (a layer where the temperature is constant regardless of altitude), and in the stratosphere, the temperature increases with altitude.

Source: Encyclopaedia Britannica Concise Encyclopedia About Encyclopaedia Britannica Concise Encyclopedia Information

Japanese:

気温が高度によって変化する割合。高度 10km付近までは高度とともに気温が下がることから，この割合を減率という。地表面から高度 1kmほどまでの大気境界層内部の気温は，地表面温度の影響を直接受けるため気温減率は昼と夜とで変化する。また，晴れた昼間は乾燥断熱減率（高度差 100mあたり約 1℃）に近い。その上空の気温減率は，圏界面まで 100mあたり 0.6～0.7℃，圏界面では等温層（気温が高度にかかわらず一定である層）となり，成層圏では高度とともに気温は上昇する。

出典　ブリタニカ国際大百科事典小項目事典ブリタニカ国際大百科事典小項目事典について　情報

<<: Gion Festival Faith Record - Gion Saireishinkoki

>>: Temperature inversion layer