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the lowest altitude in the atmosphere, over a given location, at which the air temperature is 0°C, the lowest level in the atmosphere at which the ambient temperature is 0°C
nullisotermi kõrgus . Lennunduse terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://127.0.0.1:5577/search/unif//len/nullisotermi%20k%C3%B5rgus/1/est (09.10.2026)