Weather observation radar

Japanese: 気象観測用レーダー - きしょうかんそくようれーだー
Weather observation radar

...(8) Concentration Cloud concentration is measured by millimeter wave radar or by observing the distance at which a certain light becomes invisible inside the cloud.
[Weather satellites, weather observation radar]
Traditionally, cloud measurements were limited to observations by the naked eye from the ground, but since the latter half of World War II, weather radar has gradually come into use, and in recent years, weather satellites have made it possible to grasp the amount and characteristics of clouds over a wide area from space. Weather satellites observe the atmosphere from space, and Japan's weather satellite Himawari, for example, observes light in two wavelength ranges.

*Some of the terms used in reference to "weather observation radar" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…(8)濃度 雲の濃度はミリ波レーダーにより,あるいは,一定の光が雲の中で見えなくなる距離を観測することなどから測定される。
[気象衛星,気象観測用レーダー]
 従来,雲の測定は地上からの肉眼による観測に限られていたが,第2次大戦後半よりしだいに気象レーダーが使用されるようになり,近年は気象衛星によって宇宙から広域の雲の量や性質を把握できるようになっている。 気象衛星は宇宙から大気を観察するものであるが,たとえば日本の気象衛星〈ひまわり〉を例にとると,二つの波長域の光を観察している。…

※「気象観測用レーダー」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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