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instrument tasapinnale ruuminurga 2π sr alt langeva kogukiirguse, nii päikese- kui ka maakiirguse mõõtmiseks
пиррадиометр . Meteoroloogia ja klimatoloogia terminibaas. Estonian Language Institute, Sõnaveeb 2026. https://sonaveeb.ee/search/unif//mtkl/%D0%BF%D0%B8%D1%80%D1%80%D0%B0%D0%B4%D0%B8%D0%BE%D0%BC%D0%B5%D1%82%D1%80/1/rus (26.08.2026)