English Dictionary

okta

IPA（発音記号）

/ˈɒktə/

名詞

(meteorology) One eighth of the total area of the celestial dome; used as a measure of cloudiness (one okta means that one eighth of the sky is obscured, two oktas that one quarter is obscured, and so on).

日本語の意味

気象学における単位であり、天球全体の1/8に相当する面積を示す。雲量の評価に用いられ、1オクタは空の八分の一が雲に覆われていることを意味し、2オクタは八分の一の倍であるといった具合に使われる。

The observer recorded four okta of cloud cover during the morning observation.

観測者は午前の観測で、雲量を空の8分の4（全天の4/8）と記録した。

意味（1）

(meteorology) One eighth of the total area of the celestial dome; used as a measure of cloudiness (one okta means that one eighth of the sky is obscured, two oktas that one quarter is obscured, and so on).

...64% of the low- and 50% of the high-cloud amount differences were within ± 1 okta, although many of these successes (71% in the low-cloud amount) were for cases of totally clear or totally cloudy skies.

oktas （ plural ）

okta （ plural ）