Polar Troposphere - Polar Troposphere

Japanese: 寒帯圏界面 - かんたいけんかいめん
Polar Troposphere - Polar Troposphere

...Here, the temperature lapse rate is less than 2°C per km, so the atmosphere is stable and no convection occurs, and it is also called the convection stop surface. There are three types of tropopause: the tropical tropopause (altitude about 16-18 km), the mid-latitude tropopause (about 10-12 km), and the polar tropopause (about 8-10 km). The tropopause is not connected, but the first two are separated at about 30° north latitude, and the subtropical jet stream blows across the boundary between them.

*Some of the terminology that refers to the "polar tropopause" is listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ここでは気温減率が1kmにつき2℃以下なので,大気は安定で対流が起こらないことから対流停止面ともいう。圏界面には熱帯圏界面(高度約16~18km),中緯度圏界面(約10~12km),寒帯圏界面(約8~10km)の3種類ある。圏界面はつながっているのでなく,北緯約30゜で前2者は分離し,その境目を亜熱帯ジェット気流が吹く。…

※「寒帯圏界面」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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