现有的辐射传输模型仅考虑气溶胶影响下的大气透过率，在能见度低于5km时，会给大气透过率计算带来较大的误差。本文综合考虑影响大气透过率的气溶胶和水汽因素，并利用中光谱分辨率MODIS（moderate resolution imaging spectmradiometer）数据，在特征参数的空间及时间尺度变化均比较大时，对大气透过率进行了定量反演，并进一步建立了整层大气透过率与行星反照率的关系模型，为近地层大气能见度的遥感监测提供了方法。

In this article,6S model was used to calculate the satellite observing reflectivity and radiability above ocean surface with typical oceanic aerosol parameters selected.The result shows that some obvious errors will be induced when visibility drops under 5km.Then a synthetic influence on radiation transmission of aerosol and vapor was considered in the radiation transmission model and equations between whole layer transmissibility and planet reflection was built.Three days of MODIS(moderate resolution imaging spectroradiometer)data corresponding to high visibility,moderate visibility and low visibility were taken for calculation.The result shows close accordance with the observed visibility of the time.This study gives an applicable methodology for transmissibility calculation under different atmosphere condition and provides a potential method for quantitative visibility motoring with remote sensing.