An explicit formulation for the retrieval of the overlap function in an elastic and Raman aerosol lidar

Comerón, Adolfo ; Muñoz-Porcar, Constantino ; Rodríguez-Gómez, Alejandro ; Sicard, Michaël ; Dios, Federico ; Gil-Díaz, Cristina ; dos Santos Oliveira, Daniel Camilo Fortunato ; Rocadenbosch, Francesc

We derive an explicit (i.e., non-iterative) formula for the retrieval of the overlap function in an aerosol lidar with both elastic and Raman N2 and/or O2 channels used for independent measurements of aerosol backscatter and extinction coefficients. The formula requires only the measured, range-corrected elastic and the corresponding Raman signals, plus an assumed lidar ratio. We assess the influence of the lidar ratio error in the overlap function retrieval and present retrieval examples.</p>

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