klimatisch
climatic
Concerning the climate; related to the climate.
Die klimatischen Bedingungen in der Wüste sind extrem.
The climatic conditions in the desert are extreme.

climatic
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climatic
Concerning the climate; related to the climate.
Die klimatischen Bedingungen in der Wüste sind extrem.
The climatic conditions in the desert are extreme.

'Klimatisch' (climatic) is the adjective derived from the noun 'das Klima' (climate). It is used to describe nouns that relate to the climate.
Das Klima der Region ist sehr mild.
The climate of the region is very mild.
The adjective is often combined with abstract nouns. Typical collocations are 'klimatische Bedingungen' (climatic conditions), 'klimatische Veränderungen' (climatic changes), or 'klimatische Zonen' (climatic zones).
Die Landwirtschaft leidet unter den klimatischen Veränderungen.
Agriculture is suffering from the climatic changes.
'Klimatisch' (climatic/climatically) can also be used as an adverb to modify a verb or another adjective. A very common adverbial use is the phrase 'klimatisch bedingt', meaning 'caused by the climate'.
Die Ernteausfälle sind klimatisch bedingt.
The crop failures are caused by the climate.
atmospheric
'klimatisch' and 'atmosphärisch' can both have to do with the environment or surroundings, but they usually mean different things. 'klimatisch' is used when talking about climate, for example temperature, rain, or long-term weather conditions. 'atmosphärisch' can refer scientifically to the Earth's atmosphere, but it is also often used for mood and ambience. Learners may confuse the words because 'Atmosphäre' is also part of nature. In everyday use: for climate and weather conditions, 'klimatisch' fits; for the mood of a place, 'atmosphärisch' fits.

Klimatisch ist die Region für den Weinbau sehr günstig.
In terms of climate, the region is very favorable for winegrowing.
Das kleine Konzert im Hof war sehr atmosphärisch.
The small concert in the courtyard was very atmospheric.