Calculating model for aerosol extinction from visible to far infrared wavelength

An aerosol extinction calculating model for any path in space based on the measured aerosol size distribution (Junge exponent), surface visibility, relative humidity and aerosol extinction profile has been developed, The model covers spectral range from visible- to far infrared- wavelength (1~25 000 cm-1). The calculated results by this model and by the intern ationally popular software (MODTRAN) have been compared with the measured results of grading-sun-photometer (pgs100), Since the parameters of aerosol size distribution and height distribution are considered in the model, the computed result of the present model is more close to the real data than the result of MODTRAN. Analysis shows that the parameters have great effect on aerosol extinction, which illustrates that the measured para