Lidar Ratio Regional Transfer Method for Extinction Coefficient Accuracy Improvement in Lidar Networks

Lidar networks are essential to study the three-dimensional distribution of aerosols on a regional scale. At present, both Mie-scattering lidar (ML) and advanced lidars being used in networks. The latter can retrieve extinction coefficients without strict assumptions ratio, such as Raman (RL) or high-spectral-resolution (HSRL). In order balance data quality instrument costs for network, ratio transfer method network is proposed this paper. We developed Ratio Aerosol Fraction Non-linear Regression (LR-AFNR) model between corresponding absorbing aerosol fraction (this paper studied two types aerosols: dust carbonaceous). sun photometer retrieval was medium HSRL certain range MLs. This be input parameter ML enables improvement coefficient accuracy. results show that LR-APNR applicable atmospheric conditions with high mineral carbonaceous loading, maximum relative error reduced from 46% (dust) 64% (carbonaceous aerosol) 20%.