Some Aspect of Radiation Climate of Tokyo as Observed by the Eleven Year Measurement of Spectral Global Radiation from 1961 to 1971

[摘要] Basing on data of global radiation both in total and spectral wavelengths on clear days from 1961 through 1971 the influence of pollution was discussed on the urban atmosphere of Tokyo.Decrease of radiation intensity by 10-15% during this period was noticed which may be attributed to the progress of air pollution in Tokyo.Correlations between various radiation data were calculated. Results showed a spatially homogeneous status in the central part of Tokyo. Infrared and visible data showed an extremely similar behaviour in contrast with the fact that ultraviolet radiation showed rather complex fluctuations.Correlation between radiation data and wind speed was calculated in varying wind directions.Results showed specific directional tendencies which indicated the influence of industrial areas as pollutant source.Some interpretations were given on the physics of the observed phenomena.

[学科分类] 大气科学