DEVELOPMENT OF THE NEW NATIONAL PRIMARY SCALE OF SPECTRAL RADIANCE, SPECTRAL IRRADIANCE, COLOUR TEMPERATURE AND DISTRIBUTION TEMPERATURE

摘要

Spectral radiance and spectral irradiance are the basic radiometric quantities, widely used in the fields of climate change studies, environmental monitoring, space-based astrophysical observations, atmospheric research, medical diagnostics and therapy, etc. In 1975, the national primary scale of spectral radiance and spectral irradiance was realized at National Institute of Metrology (NIM). The measurement ability of the primary standard was promoted in 1989 and 2000, and then NIM took part in the 1990 and 2004 international key comparison of spectral irradiance sponsored by BIPM respectively.