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To study and analyze the weight of atmospheric radiative bright temperature with the whole tropospheric atmospheric radiative bright temperature at different integration heights, this paper uses sounding data from Shanghai station for four seasons from March 2018 to February 2019 and uses the MonoRTM atmospheric radiative transfer model to simulate the brightness temperature of domestic QFW-6000 microwave radiometer water vapor and oxygen channels at different heights in all seasons. The experimental results show that the brightness temperature weights of the water vapor and oxygen channel frequencies in the four seasons are slightly different. The individual differences in the brightness temperature weights of the eight-channel frequencies of water vapor are small, and they all contribute to the brightness temperature at the height of 0-10 km, which shows that the inversion of the humidity profile using the frequency of the water vapor channel needs to calculate the brightness temperature to the height of 10 km. The individual differences in the bright temperature weights of the eight-channel frequencies of oxygen are large, and the three-channel frequencies have little contribution to the brightness temperature at altitudes above 3 km, indicating that using the three oxygen channel frequencies to invert the atmospheric temperature profile needs to calculate the brightness temperature to the height of 3 km.
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