Atmospheric parameter model and its application in the calculation of atmospheric raditaive transfer

The calculation accuracy of atmospheric radiative transfer depends greatly on the precision of atmospheric parameters. The establishment of a local atmospheric parameter model plays an important role in the calculation of atmospheric radiative transfer for the photoelectric engineering. By using the data of currently available, including balloon-sounding data, satellite observation data, and some surface observation data at different areas in China, a preliminary model of atmospheric parameters was established, including the daily average, monthly average and yearly average profiles from the ground to 120 km of atmospheric temperature, humidity, air pressure, and density, as well as the monthly average of the ground visibility, covering the 91 observing stations in China. These parameters were integrated in the Combined Atmospheric Radiative Transfer calculation software (CART) to calculate atmospheric transmittance and atmospheric background radiation. The spatial distribution of atmospheric parameters of 5 stations and the monthly distribution of atmospheric thermal background radiation and its geographical distribution in China were shown in the paper.