Elucidation of radiative heat transfer mechanism in urban-earth subscale atmosphere

为研究城市-地球次尺度大气辐射热传输机制，研制了一种带辐射通量传感器的GPS探空仪。在控温室内对探空仪进行了特性化和定标后，在市区进行了气球观测试验，成功地获得了地面上、下红外辐射热通量的垂直廓线。与传统的观测设备相比，所开发的无线电探空仪成本低，因此，适合于长期观测。此外，还发展了反演分析方法，以便从观测数据中评估大气的辐射特性。

GPS radiosonde with radiation flux sensors was newly developed in order to elucidate radiative heat transfer mechanism in urban-earth subscale atmosphere. After characterization and calibration of the radiosonde were carried out in temperature-controlled room, balloon observation tests were conducted in urban area and vertical profiles of upward and downward infrared radiation heat flux were successfully obtained. The developed radiosonde is low cost as compared to the conventional observation device, hence, is suitable for long-term observation. Furthermore, inverse analysis method was also developed in order to evaluate radiative properties of the atmosphere from the observation data.