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Laboratory Experimental check of radiative air cooling theory
Author(s) -
Corradini C.,
Severini M.
Publication year - 1975
Publication title -
quarterly journal of the royal meteorological society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.744
H-Index - 143
eISSN - 1477-870X
pISSN - 0035-9009
DOI - 10.1002/qj.49710142713
Subject(s) - emissivity , radiative transfer , radiative cooling , atmospheric sciences , environmental science , longwave , meteorology , infrared , turbulence , divergence (linguistics) , mechanics , physics , optics , linguistics , philosophy
Experimental evidence of air mass cooling in the laboratory by infrared radiative exchanges is given. The experiments were carried out in a 50m 3 chamber, with relative humidities less than 70%, in the absence of turbulent motions and haze. The measured values of the air temperature as a function of the height and time with decreasing floor temperature are compared with calculated values for which the radiative contribution is determined by the emissivity method. The difference, less than 10%, between experimental and theoretical coolings, gives evidence that the method of computing radiation flux divergence is sufficiently accurate for many meteorological purposes.