以实测的水平能见度和时间同步MODIS的气溶胶光学厚度(aerosol optical depth,AOD)数据为基础,验证了多个经典的AOD与能见度转换模型在全球不同区域的适用性。结果表明,模型中含有气溶胶标高的Peterson模型可以得到较高精度。
Atmospheric aerosol optical depth change has great influence on the accuracy of Earth observation, and is one of the research hotspots of quantitative remote sensing. However, traditional atmospheric radiative transfer softwares such as 6S and MODTRAN choose horizontal meteorological visibility as the key optical property parameters of aerosol. Hence, thorough discussion of the relationship between aerosol optical depth and horizontal meteorological visibility has important practical significance. Four convert models are validated by measurements of horizontal meteorological visibility and synchronous AOD of MODIS. Results show that Peterson model with atmosphere scale height H can obtain higher accuracy.