English Dictionary

airmass

名詞

(physics, meteorology) a widespread body of air, the properties of which can be identified as: (a) having been established while that air was situated over a particular region of the Earth's surface (airmass source region) and (b) undergoing specific modifications while in transit away from the source region. An air mass is often defined as a widespread body of air that is approximately homogeneous in its horizontal extent, particularly with reference to temperature and moisture distribution; in addition, the vertical temperature and moisture variations are approximately the same over its horizontal extent.

日本語の意味

大気塊：特定の地域上空で生成され、その地域の空気が持つ温度や湿度の性質が水平的にほぼ均一な広範囲の空気の塊。

The advancing airmass carried the temperature and moisture characteristics it had acquired over its source region across a broad swath of the continent.

接近する気団は、発生源地域で獲得した気温と湿度の特性を大陸の広い範囲にわたって運んだ。

意味（1）

(physics, meteorology) a widespread body of air, the properties of which can be identified as: (a) having been established while that air was situated over a particular region of the Earth's surface (airmass source region) and (b) undergoing specific modifications while in transit away from the source region. An air mass is often defined as a widespread body of air that is approximately homogeneous in its horizontal extent, particularly with reference to temperature and moisture distribution; in addition, the vertical temperature and moisture variations are approximately the same over its horizontal extent.

意味（2）

(astronomy) The amount of air through which light from a celestial object passes, normalized to 1 for an object at zenith.

Unfortunately, the extinction is very sensitive to the airmass[…]

airmasses （ plural ）